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Radiation hard monolithic CMOS sensors with small electrodes for High Luminosity LHC
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Dergi:
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Yayıncı:
Elsevier
Yazar(lar) :
H. Pernegger , P. Allport , I Asensi Tortajada , M. Barbero , P. Barrillon , I Berdalovic , C. Bespin
Konu :
Particle tracking detectors, Radiation-hard detectors, Electronic detector readout concepts, CMOS sensors, Monolithic active pixel sensors
Yıl :
2021
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Yayıncı Web Sitesi
Kaydet
The upgrade of the tracking detectors for the High Luminosity-LHC (HL-LHC) requires the development of novel radiation hard silicon sensors. The development of Depleted Monolithic Active Pixel Sensors targets the replacement of hybrid pixel detectors with radiation hard monolithic CMOS sensors. We designed, manufactured and tested radiation hard monolithic CMOS sensors in the TowerJazz 180 nm CMOS imaging technology with small electrodes pixel designs. These designs can achieve pixel pitches well below current hybrid pixel sensors (typically 50 x 50 mu m) for improved spatial resolution. Monolithic sensors in our design allow to reduce multiple scattering by thinning to a total silicon thickness of only 50 mu m. Furthermore monolithic CMOS sensors can substantially reduce detector costs. These well-known advantages of CMOS sensor for performance and costs can only be exploited in pp-collisions at HL-LHC if the DMAPS sensors are designed to be radiation hard, capable of high hit rates and have a fast signal response to satisfy the 25 ns bunch crossing structure of LHC. Through the development of the MALTA and Mini-MALTA sensors we show the necessary steps to achieve radiation hardness at 10(15) n(eq) /cm(2) for DMAPS with small electrode designs. The sensors combine high granularity (pitch 36.4x36.4 mu m(2)), low detector capacitance (<5fF/pixel) of the charge collection electrode (3 mu m), low noise (ENC approximate to 10 e(-)) and low power operation (1(mu)W/pixel) with a fast signal response (25 ns bunch crossing). The sensors feature arrays of 512 x 512 (MALTA) and 16 x 64 (Mini-MALTA) pixels. To cope with high hit rates expected at HL-LHC (>200 MHz/cm(2)) we have implemented a novel highspeed asynchronous readout architecture. The paper summarises the optimisation of the pixel design to achieve radiation hard pixel designs with full efficiency after irradiation at >98% after 10(15) n(eq)/cm(2)).
Anahtar Kelimeler : Particle tracking detectors, Radiation-hard detectors, Electronic detector readout concepts, CMOS sensors, Monolithic active pixel sensors, article
Cilt: 986
ISSN: 0168-9002
2
Test of digital neutron-gamma discrimination with four different photomultiplier tubes for the NEutron Detector Array (NEDA)
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Dergi:
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yayıncı:
ELSEVIER SCIENCE BV
Yazar(lar) :
X. L. Luo , V. Modamio , J. Nyberg , J. J. Valiente-Dobon , Q. Nishada , G. de Angelis , T. Hueyuek
Konu :
Digital neutron-gamma discrimination, Liquid scintillator, Photomultiplier tube, Charge Comparison, Integrated rise-time, Time-of-flight, NEDA
Yıl :
2014
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yayıncı Web Sitesi
Kaydet
A comparative study of the neutron-gamma discrimination performance of a liquid scintillator detector BC501A coupled to four different 5 in photomultiplier tubes (ET9390kb, R11833-100, XP4512 and R4144) was carried out Both the Charge Comparison method and the Integrated Rise-Time method were implemented digitally to discriminate between neutrons and gamma rays emitted by a Cf-252 source. In both methods, the neutron-gamma discrimination capabilities of the four photomultiplier tubes were quantitatively compared by evaluating their figure-of-merit values at different energy regions between 50 keVee and 1000 keVee. Additionally, the results were further verified qualitatively using time-of-flight to distinguish gamma rays and neutrons. The results consistently show that photomultiplier tubes R11833-100 and ET9390kb generally perform best regarding neutron-gamma discrimination with only slight differences in figure-of-merit values. This superiority can be explained by their relatively higher photoelectron yield, which indicates that a scintillator detector coupled to a photomultiplier tube with higher photoelectron yield tends to result in better neutron-gamma discrimination performance. The results of this work will provide reference for the choice of photomultiplier tubes for future neutron detector arrays like NEDA. (C) 2014 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : Digital neutron-gamma discrimination, Liquid scintillator, Photomultiplier tube, Charge Comparison, Integrated rise-time, Time-of-flight, NEDA, article
Cilt: 767
ISSN: 0168-9002
Sınıflandırma :
Enerji %100
Enerji %98
3
AGATA-Advanced GAmma Tracking Array
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Dergi:
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yayıncı:
ELSEVIER SCIENCE BV
Yazar(lar) :
S. Akkoyun , A. Algora , B. Alikhani , F. Ameil , G. de Angelis , L. Arnold , S. Badoer
Konu :
AGATA, gamma-Ray spectroscopy, gamma-Ray tracking, HPGe detectors, Digital signal processing, Pulse-shape, gamma-ray tracking algorithms, Semiconductor detector performance, simulations
Yıl :
2012
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yayıncı Web Sitesi
Kaydet
The Advanced GAmma Tracking Array (AGATA) is a European project to develop and operate the next generation gamma-ray spectrometer. AGATA is based on the technique of gamma-ray energy tracking in electrically segmented high-purity germanium crystals. This technique requires the accurate determination of the energy, time and position of every interaction as a gamma ray deposits its energy within the detector volume. Reconstruction of the full interaction path results in a detector with very high efficiency and excellent spectral response. The realisation of gamma-ray tracking and AGATA is a result of many technical advances. These include the development of encapsulated highly segmented germanium detectors assembled in a triple cluster detector cryostat, an electronics system with fast digital sampling and a data acquisition system to process the data at a high rate. The full characterisation of the crystals was measured and compared with detector-response simulations. This enabled pulse-shape analysis algorithms, to extract energy, time and position, to be employed. In addition, tracking algorithms for event reconstruction were developed. The first phase of AGATA is now complete and operational in its first physics campaign. In the future AGATA will be moved between laboratories in Europe and operated in a series of campaigns to take advantage of the different beams and facilities available to maximise its science output. The paper reviews all the achievements made in the AGATA project including all the necessary infrastructure to operate and support the spectrometer. (C) 2011 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : AGATA, gamma-Ray spectroscopy, gamma-Ray tracking, HPGe detectors, Digital signal processing, Pulse-shape and gamma-ray tracking algorithms, Semiconductor detector performance and simulations, article
Cilt: 668
ISSN: 0168-9002
Sınıflandırma :
4
A line-shape analysis for spin-1 NMR signals
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Dergi:
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yayıncı:
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yazar(lar) :
E vonGoeler , R Segel , R Seitz , Y Semertzidis , F Sever , P Shanahan , EP Sichtermann , F Simeoni , GI Smirnov , A Staude , A Steinmetz , U Stiegler , H Stuhrmann , M Szleper , KM Teichert , F Tessarotto , W Tlaczala , A Tripet , G Unel , M Velasco , J Vogt , R Voss , R Weinstein , C Whitten , R Windmolders , R Willumeit , W Wislicki , A Witzmann , A Yanez , J Ylostalo , AM Zanetti , K Zaremba , J Zhao , C Dulya , D Adams , B Adeva , E Arik , A Arvidson , B Badelek , MK Ballintijn , D Bardin , G Bardin , G Baum , P Berglund , L Betev , IG Bird , R Birsa , P Bjorkholm , BE Bonner , N deBotton , M Boutemeur , F Bradamante , A Bressan , S Bultmann , E Burtin , C Cavata , D Crabb , J Cranshaw , T Cuhadar , S DallaTorre , R vanDantzig , B Derro , A Deshpande , S Dhawan , A Dyring , S Eichblatt , JC Faivre , D Fasching , F Feinstein , C Fernandez , B Frois , A Gallas , JA Garzon , T Gaussiran , R Gehring , M Giorgi , S Goertz , F Gomez , G Gracia , N deGroot , MG Perdekamp , E Gulmez , J Harmsen , D vonHarrach , T Hasegawa , P Hautle , N Hayashi , CA Heusch , N Horikawa , VW Hughes , G Igo , S Ishimoto , T Iwata , EM Kabuss , T Kageya , L Kalinovskaya , A Karev , HJ Kessler , TJ Ketel , A Kishi , Y Kisselev , L Klostermann , D Kramer , V Krivokhijine , W Kroger , V Kukhtin , K Kurek , J Kyynarainen , M Lamanna , U Landgraf , JM LeGoff , F Lehar , A deLesquen , J Lichtenstadt , T Lindqvist , M Litmaath , M Lowe , A Magnon , GK Mallot , F Marie , A Martin , J Martino , T Matsuda , B Mayes , JS McCarthy , K Medved , W Meyer , G vanMiddelkoop , D Miller , K Mori , J Moromisato , A Nagaitsev , J Nassalski , L Naumann , TO Niinikoski , JEJ Oberski , A Ogawa , C Ozben , DP Parks , F PerrotKunne , D Peshekhonov , R Piegaia , L Pinsky , S Platchkov , M Plo , D Pose , H Postma , J Pretz , T Pussieux , J Pyrlik , G Reicherz , I Reyhancan , A Rijllart , JB Roberts , S Rock , M Rodriguez , E Rondio , A Rosado , I Sabo , J Saborido , A Sandacz , I Savin , P Schiavon , KP Schuler
Konu :
Nükleer Fizik, Temel Parçacıklar ve Alanlar, Temel Bilimler, Mühendislik ve Teknoloji, Fizik, Temel Bilimler (SCI), FİZİK, NÜKLEER, FİZİK, PARTİKLER VE ALANLAR, NÜKLEAR BİLİMİ VE TEKNOLOJİSİ, Mühendislik, Bilişim ve Teknoloji (ENG), Mühendislik, ALETLER & GÖSTERİM
Yıl :
2021
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yayıncı Web Sitesi
Kaydet
An analytic model of the deuteron absorption function has been developed and is compared to experimental NMR signals of deuterated butanol obtained at the SMC experiment in order to determine the deuteron polarization. The absorption function model includes dipolar broadening and a frequency-dependent treatment of the intensity factors. The high-precision TE signal data available are used to adjust the model for Q-meter distortions and dispersion effects. Once the Q-meter adjustment is made, the enhanced polarizations determined by the asymmetry and TE-calibration methods compare well within the accuracy of each method. In analyzing the NMR signals, the quadrupolar coupling constants could be determined for both the C-D and the O-D bonds of deuterated butanol.
Anahtar Kelimeler : Nükleer Fizik, Temel Parçacıklar ve Alanlar, Temel Bilimler, Mühendislik ve Teknoloji, Fizik, Temel Bilimler (SCI), FİZİK, NÜKLEER, FİZİK, PARTİKLER VE ALANLAR, NÜKLEAR BİLİMİ VE TEKNOLOJİSİ, Mühendislik, Bilişim ve Teknoloji (ENG), Mühendislik, ALETLER & GÖSTERİM, Makale

ISSN: 0168-9002
5
Radiation-hardness measurements of high OH- content quartz fibres irradiated with 24 GeV protons up to 1.25 Grad
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Dergi Makalesi
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DSpace Makaleler
Dergi:
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı:
Elsevier Science Bv
Yazar(lar) :
Cankocak K. , Bakirci M. N. , Cerci S. , Gulmez E. , Merlo J. P. , Onel Y. , Ozok F. , Schmidt I. , Sonmez N.
Konu :
quartz, fibre, radiation, attenuation
Yıl :
2008
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı Web Sitesi
Kaydet
We investigated the darkening of two high OH- content quartz fibres irradiated with 24 GeV protons at the Cern PS facility IRRAD. The two tested fibres have a 0.6 mm quartz core diameter, one with hard plastic cladding (qp) and the other with quartz cladding (qq). These fibres were exposed at about 1.25 Grad in 3 weeks. The fibres became opaque below 380 nm and in the range 580-650 nm. The darkening under irradiation and damage recovery after irradiation as a function of dose and time are similar to what we observed with electrons. The typical attenuation at 455 nm are 1.44 +/- 0.22 and 2.20 +/- 0.15 dB/m at 100 Mrad for qp and qq fibres, respectively. The maximum damage recovery is also observed near this wavelength. (c) 2007 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : quartz, fibre, radiation, attenuation, article
Cilt: 585
Sayı: 01.Feb
ISSN: 0168-9002
Sınıflandırma :
6
Microscopic Energy-Distribution of Auger Electrons of I-125 In Iodobenzene and Water
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Dergi:
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı:
Elsevier Science Bv
Yazar(lar) :
Unak , P , Unak , T
Yıl :
1987
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı Web Sitesi
Kaydet
Anahtar Kelimeler : article
Cilt: 255
Sayı: 01.Feb
ISSN: 0168-9002
Sınıflandırma :
7
NEDA-NEutron Detector Array
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Dergi Makalesi
Kaynak :
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Dergi:
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı:
Elsevier
Yazar(lar) :
Valiente-Dobon J. J. , Jaworski G. , Goasduff A. , Egea J. , Modamio V , Huyuk T. , Bissiato E.
Konu :
NEDA, Nuclear structure, Gamma-ray spectroscopy, Neutron detector, Liquid scintillator, Digital electronics, Neutron-gamma discrimination
Yıl :
2019
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı Web Sitesi
Kaydet
The NEutron Detector Array, NEDA, will form the next generation neutron detection system that has been designed to be operated in conjunction with gamma-ray arrays, such as the tracking-array AGATA, to aid nuclear spectroscopy studies. NEDA has been designed to be a versatile device, with high-detection efficiency, excellent neutron-gamma discrimination, and high rate capabilities. It will be employed in physics campaigns in order to maximise the scientific output, making use of the different stable and radioactive ion beams available in Europe. the first implementation of the neutron detector array NEDA with AGATA 1 pi was realised at GANIL. This manuscript reviews the various aspects of NEDA.
Anahtar Kelimeler : NEDA, Nuclear structure, Gamma-ray spectroscopy, Neutron detector, Liquid scintillator, Digital electronics, Neutron-gamma discrimination, article
Cilt: 927
ISSN: 0168-9002
Sınıflandırma :
Enerji %95
Enerji %97
8
Monitoring macro voids in mortar by X-ray computed tomography
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Dergi Makalesi
Kaynak :
DSpace Makaleler
Dergi:
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı:
Elsevier Science Bv
Yazar(lar) :
Recep Birgul
Konu :
X-Ray CT, Image Processing, Porosity, Macro Voids
Yıl :
2008
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı Web Sitesi
Kaydet
In this study, X-ray computed tomography (CT) was shown to be a capable technique to quantify the evolution of macro voids and to monitor the strength development of mortar specimens. Two-dimensional image analysis was utilized to extract quantitative information from the X-ray Cr data. In particular, monitoring and quantifying macro voids were of interest: thus nondestructive X-ray measurements were conducted on the same mortar specimen at different days. X-ray attenuations were then transformed into Cr numbers, which was actually a map of linear attenuation coefficients in terms of Hounsfield Units; this map can be presented as a two-dimensional image. Analyses performed on these images revealed that the porosity of the mortar specimen reduced from 3.94% at the beginning to 3.06% at the end of the monitoring period. (C) 2008 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : X-Ray CT, Image Processing, Porosity, Macro Voids, article
Cilt: 596
Sayı: 3
ISSN: 0168-9002
Sınıflandırma :
9
Multipurpose high sensitivity radiation detector: Terradex
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Kaynak :
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Dergi:
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Yayıncı:
Elsevier Science Bv
Yazar(lar) :
Behcet Alpat , Damiano Aisa , Marco Bizzarri , Sandor Blasko , Gennaro Esposito , Lucio Farnesini , Emmanuel Fiori
Konu :
radon, radiation, environment, contamination, self-triggering, silicon detector
Yıl :
2007
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Yayıncı Web Sitesi
Kaydet
Terradex project aims to realise an accurate and programmable multiparametric tool which will measure relevant physical quantities such as observation time, energy and type of all decay products of three naturally occurring decay chains of uranium and thorium series present in nature as well as the decay products of man-made radioactivity. The measurements described in this work are based on the performance tests of the first version of an instrument that is designed to provide high counting accuracy, by introducing self-triggering, delayed time-coincidence technique, of products of a given decay chain. In order to qualify the technique and to calibrate the Terradex, a (222)Rn source is used. The continuous and accurate monitoring of radon concentration in air is realised by observing the alpha and beta particles produced by the decay of (222)Rn and its daughters and tag each of them with a precise occurrence time. The validity of delayed coincident technique by using the state of the art electronics with application of novel data sampling and analysis methods are discussed. The flexibility of sampling protocols and the advantages of online calibration capability to achieve the highest level of precision in natural and man-made radiation measurements are also described. (C) 2007 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : radon, radiation, environment, contamination, self-triggering, silicon detector, article
Cilt: 574
Sayı: 3
ISSN: 0168-9002
Sınıflandırma :
10
Position resolution study at high energies of a sampling electromagnetic calorimeter whose active material is a scintillator with Peroxide-cured polysiloxane base
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Kaynak :
DSpace Makaleler
Dergi:
Nuclear Instruments & Methods In Physics Research Section A: Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı:
Elsevier
Yazar(lar) :
Güral Aydın , Mehmet Sarıgül , Hasan Sarıgül
Konu :
Sampling calorimeter, Geant4, Logarithmic weight, Iterative weighting method, Deep neural network, Calorimeters, Curing, Deep neural networks, Magnetic materials, Oxidation, Particle detectors, Peroxides, Readout systems, Scintillation counters, Silicones, Towers, Electromagnetic calorimeter, Energy depositions, Logarithmic weight, Neural network structures, Position resolution, Sampling calorimeters, Weighting methods, Iterative methods
Yıl :
2020
Nuclear Instruments & Methods In Physics Research Section A: Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı Web Sitesi
 Piri Tam Metin Bulucu
Kaydet
This study is based on the simulation for the position resolution performances of a sampling electromagnetic calorimeter with a Peroxide-cured polysiloxane based scintillator as an active material. Various algorithms and corrections were applied to reconstruct hit positions. Energy deposition in the center tower and neighboring towers were used to reconstruct the beam impact position in a detector tower module consisted of a 3 x 3 array matrix. Linear weights, corrected linear weights, logarithmic weights, and corrected logarithmic weights were the different algorithms to reconstruct beam hit positions through energy weighted tower positions. Moreover, the iterative weighting method based on the logarithmic weights were applied. The re-weighting algorithm based on the iterative weighting method was seen to improve the results necessarily at relatively low beam energies. Additionally, deep neural network structures were applied over the linear weights without using any logarithmic weights or correction to improve the position resolutions.
DOI : 10.1016/j.nima.2019.163341
Anahtar Kelimeler : Sampling calorimeter, Geant4, Logarithmic weight, Iterative weighting method, Deep neural network, article
Cilt: 955
ISSN: 0168-9002
Sınıflandırma :
11
Positron source investigation by using CLIC drive beam for Linac-LHC based e(+) p collider
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Dergi:
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yayıncı:
ELSEVIER SCIENCE BV
Yazar(lar) :
Ertan Arikan , Husnu Aksakal
Konu :
Positron production, Lepton-hadron collider
Yıl :
2012
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yayıncı Web Sitesi
Kaydet
Three different methods which are alternately conventional, Compton backscattering and Undulator based methods employed for the production of positrons. The positrons to be used for e(+) p collisions in a Linac-LHC (Large Hadron Collider) based collider have been studied. The number of produced positrons as a function of drive beam energy and optimum target thickness has been determined. Three different targets have been used as a source investigation which are W-75-Ir-25, W-75-Ta-25, and W-75-Re-25 for three methods. Estimated number of the positrons has been performed with FLUKA simulation code. Then, these produced positrons are used for following Adiabatic matching device (AMD) and capture efficiency is determined. Then e(+) p collider luminosity corresponding to the methods mentioned above have been calculated by CAIN code. (C) 2012 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : Positron production, Lepton-hadron collider, article
Cilt: 683
ISSN: 0168-9002
Sınıflandırma :
12
Nuclear reactor monitoring with gadolinium-loaded plastic scintillator modules
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Kaynak :
DSpace Makaleler
Dergi:
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Yayıncı:
Elsevier
Yazar(lar) :
Sertac Ozturk
Konu :
Nuclear reactor, Neutrino, Safeguards, Detector, Scintillator, Simulation
Yıl :
2020
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Yayıncı Web Sitesi
Kaydet
In this study, simulation-based design and optimization studies of a gadolinium-loaded segmented plastic scintillator detector are presented for monitoring applications of nuclear reactors in Turkey using antineutrinos. For the first time in the literature, a multivariate analysis technique is introduced to suppress cosmic background for such a reactor antineutrino detector.
Anahtar Kelimeler : Nuclear reactor, Neutrino, Safeguards, Detector, Scintillator, Simulation, article
Cilt: 955
ISSN: 0168-9002
Sınıflandırma :
13
A reactor antineutrino detector based on hexagonal scintillator bars
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DSpace Makaleler
Dergi:
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı:
Elsevier
Yazar(lar) :
Mustafa Kandemir , Altan Cakir
Konu :
Antineutrino detector, Reactor monitoring, Hexagonal plastic scintillator bar, GEANT4
Yıl :
2020
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı Web Sitesi
Kaydet
This study presents a new concept of segmented antineutrino detector based on hexagonal plastic scintillator bars for detecting antineutrinos from a nuclear reactor core. the choice of hexagonal scintillator bars is original and provides compactness. the proposed detector detects antineutrinos via inverse beta decay (IBD) with the prompt-delayed double coincidence. Owing to its segmented structure, the background, which satisfies the delayed coincidence condition can be eliminated by applying proper event selection cuts. in this manner, the main focus is to determine proper selection criteria to precisely tag the true IBD events. Monte-Carlo simulation is carried out to understand the characteristic of the IBD interaction in the proposed detector by using Geant4 toolkit. A set of event selection criteria is established based on the simulated data. It is found that a detection efficiency of 10% can be achieved with the selection condition applied. It is also shown that fast neutrons, which constitute the main background source for above-ground detection, can be effectively eliminated with these selection criteria. the motivation for this study is to install this compact detector at a short distance (<100 m) from the Akkuyu Nuclear Power Plant, which is expected to start operation in 2023.
Anahtar Kelimeler : Antineutrino detector, Reactor monitoring, Hexagonal plastic scintillator bar, GEANT4, article
Cilt: 953
ISSN: 0168-9002
14
Monte Carlo simulation of a single detector unit for the neutron detector array NEDA
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Dergi Makalesi
Open Access
Kaynak 1:
DSpace Makaleler
Kaynak 2:
DSpace Makaleler
Dergi:
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Yayıncı:
ELSEVIER SCIENCE BV
Yazar(lar) :
G. Jaworski , M. Palacz , J. Nyberg , G. de Angelis , G. de France , A. Di Nitto , J. Egea , Mustafa Nizamettin Erduran , S. Erturk , E. Farnea , A. Gadea , V. Gonzalez , A. Gottardo , T. Hueyuek , J. Kownacki , A. Pipidis , B. Roeder , P. -A. Soderstrom , E. Sanchis , R. Tarnowski , A. Triossi , R. Wadsworth , J. J. Valiente Dobon
Konu :
Monte Carlo simulation, BC501, BC501A, BC537, Liquid scintillator, Neutron detector, Geant4, NEDA
Yıl :
2012
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Tam Metin
Kaydet
A study of the dimensions and performance of a single detector of the future neutron detector array NEDA was performed by means of Monte Carlo simulations, using GEANT4. Two different liquid scintillators were evaluated: the hydrogen based BC501A and the deuterated BC537. The efficiency and the probability that one neutron will trigger a signal in more than one detector were investigated as a function of the detector size. The simulations were validated comparing the results to experimental measurements performed with two existing neutron detectors, with different geometries, based on the liquid scintillator BC501. (C) 2012 Elsevier B.V. All rights reserved.
DOI : 10.1016/j.nima.2012.01.017
Anahtar Kelimeler : Monte Carlo simulation, BC501, BC501A, BC537, Liquid scintillator, Neutron detector, Geant4, NEDA, article
Cilt: 673
ISSN: 0168-9002
Sınıflandırma :
Enerji %99
Enerji %100
15
A Practical Method For Calculation of the Linear Energy Transfers and Ranges of Low-Energy Electrons In Different Chemical-Systems
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Dergi Makalesi
Kaynak :
DSpace Makaleler
Dergi:
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı:
Elsevier Science Bv
Yazar(lar) :
Unak , T
Yıl :
1987
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
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Anahtar Kelimeler : article
Cilt: 255
Sayı: 01.Feb
ISSN: 0168-9002
Sınıflandırma :
Fizik %22
16
Software emulator of nuclear pulse generation with different pulse shapes and pile-up
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Dergi:
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı:
Elsevier Science Bv
Yazar(lar) :
Pechousek Jiri , Konecny Daniel , Novak Petr , Kouril Lukas , Kohout Pavel , Celiktas Cuneyt , Vujtek Milan
Konu :
Nuclear pulse, Emulator, Pile-up, Multichannel analysis, Mathematica (R)
Yıl :
2016
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
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Kaydet
The optimal detection of output signals from nuclear counting devices represents one of the key physical factors that govern accuracy and experimental reproducibility. In this context, the fine calibration of the detector under diverse experimental scenarios, although time costly, is necessary. However this process can be rendered easier with the use of systems that work in lieu of emulators. In this report we describe an innovative programmable pulse generator device capable to emulate the scintillation detector signals, in a way to mimic the detector performances under a variety of experimental conditions. The emulator generates a defined number of pulses, with a given shape and amplitude in the form of a sampled detector signal. The emulator output is then used off-line by a spectrometric system in order to set up its optimal performance. Three types of pulse shapes are produced by our device, with the possibility to add noise and pulse pile-up effects into the signal. The efficiency of the pulse detection, pile-up rejection and/or correction, together with the dead-time of the system, are therein analyzed through the use of some specific algorithms for pulse processing, and the results obtained validate the beneficial use of emulators for the accurate calibration process of spectrometric systems. (C) 2016 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : Nuclear pulse, Emulator, Pile-up, Multichannel analysis, Mathematica (R), article
Cilt: 828
ISSN: 0168-9002
Sınıflandırma :
17
A different perspective to the effective atomic number (Z(eff)) for some boron compounds and trommel sieve waste (TSW) with a new computer program ZXCOM
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NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yayıncı:
ELSEVIER
Yazar(lar) :
Zeynel Yalcin , Orhan Icelli , Mustafa Okutan , Recep Boncukcuoglu , Ozan Artun , Salim Orak
Konu :
Effective atomic number (Z(eff)), Boron compounds, Shielding materials, RayleighCompton scattering ratio
Yıl :
2012
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
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 Piri Tam Metin Bulucu
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In this study, the effective atomic number (Z(eff))has been calculated for some boron compounds, such as concentrate colemanite, tincal, ulexite, boric acid, probertite and TSW (Trommel Sieve Waste) by means of ZXCOM at incident beam energy (E-0=59.543 key) and scattering angle (theta=35 degrees). We present and discuss the (Z(eff)) obtained by Rayleigh/Compton (R/C) ratio and evaluated for the purpose of radiation shielding which contains boron compounds, which are commonly used as shield materials. (C) 2012 Elsevier B.V. All rights reserved.
DOI : 10.1016/j.nima.2012.05.041
Anahtar Kelimeler : Effective atomic number (Z(eff)), Boron compounds, Shielding materials, RayleighCompton scattering ratio, article
Cilt: 686
ISSN: 0168-9002
Sınıflandırma :
18
Electron-muon identification by atmospheric shower in a new concept of an EAS detector
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Dergi:
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Yayıncı:
Elsevier Science Bv
Yazar(lar) :
M. Iori , E. Arslan , H. Denizli , M. Kaya , A. Yilmaz , J. Russ
Konu :
Neutrino, tau, UHECR, Scintillator
Yıl :
2012
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
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Kaydet
We show the test results for TOF resolution and mu/e separation capabilities of a prototype element (Iori and Sergi, 2008 [1]), intended for deployment in an array capable of measuring large zenith angle cosmic rays as well as detecting the signature of Ultra High Energy tau neutrino interactions using the Earth skimming strategy (Fargion et al., 2004 [2], Feng et al., 2002 [3], Beacom et al., 2003 [4], Zas, 2005 [5]). The module was designed to recognize single particles and determine the direction of motion (up/down) and measure the trajectory angles. It uses two pairs of scintillator counters, named towers, each composed by two tiles (20 x 20 cm(2), 1.4 cm thick), separated by 160 cm. Each tile is read by one low voltage R5783 Hamamatsu photomultiplier (PMT). Two PMT boxes are attached to a metal structure that defines the axis of the array. Each tile is embedded in a PVC box which also contains the PMT. The PMT has excellent time resolution (approximate to 400 ps) for good TOE precision. The PMT signal was digitized by the MATAQ board in coincidence with KASCADE-GRANDE (KG) shower Delagnes and Breton, 2001 [6]. (C) 2012 Published by Elsevier B.V.
Anahtar Kelimeler : Neutrino, tau, UHECR, Scintillator, conferenceObject
Cilt: 692
ISSN: 0168-9002
Sınıflandırma :
19
Event reconstruction methods for the HypHI Phase 0 experiment at GSI
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NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yayıncı:
ELSEVIER SCIENCE BV
Yazar(lar) :
C. Rappold , T. R. Saito , S. Bianchin , O. Borodina , M. Kavatsyuk , F. Maas , W. Trautmann
Konu :
Event reconstruction, Hough transform, Kalman filter, Hypernuclear spectroscopy, HypHI
Yıl :
2010
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
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Kaydet
The first experiment of the HypHI project, Phase 0, at GSI-Darmstadt performs the feasibility study of precise hypernuclear spectroscopy with heavy ion induced reactions by using the collision of Li-6 at 2 A GeV on a C-12 target. In preparation of the Phase 0 experiment, simulation studies have been performed with a dedicated event reconstruction procedure. Details of this procedure will be discussed in this paper as well as the physics motivation of the Phase 0 and the experimental setup used during simulations. Expected results of the experiment will also be discussed. (C) 2010 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : Event reconstruction, Hough transform, Kalman filter, Hypernuclear spectroscopy, HypHI, article
Cilt: 622
Sayı: 1
ISSN: 0168-9002
Sınıflandırma :
20
A feasibility study of TAC IR-FEL project
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NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yayıncı:
ELSEVIER SCIENCE BV
Yazar(lar) :
Huesnue Aksakal , Ertan Arikan
Konu :
Free electron laser, TAC oscillator-FEL, Amplifier-FEL
Yıl :
2010
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
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Kaydet
We have performed preliminary simulation of amplifier mode operation of Turkish accelerator complex (TAC) infrared free electron laser (IR-FEL) facility which is designed to operate in oscillator mode. FEL power values of amplifier mode are explored using 3D SIMPLEX 1.3 (X-ray FEL Practical Simulator) simulation code and it is argued that the same or higher amount of power of TAC IR-FEL planing to obtain in the oscillator mode, could be obtained in the amplifier mode, using same undulator and electron beam parameters with a small modification. (C) 2010 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : Free electron laser, TAC oscillator-FEL, Amplifier-FEL, article
Cilt: 620
Sayı: 2.Mar
ISSN: 0168-9002
Sınıflandırma :
21
Analytical evaluation of Doppler functions arising from resonance effects in nuclear processes
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Dergi:
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Yayıncı:
Elsevier Science Bv
Yazar(lar) :
B. A. Mamedov
Konu :
Doppler functions, Resonance absorption, Nuclear reactors, Cross-section
Yıl :
2009
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
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Kaydet
We present a new method for the analytical evaluation of Doppler function arising from resonance effects in nuclear processes. The method yields stable results in nuclear physics field avoiding complicated analytic approximations. Explicit formulas for the Doppler function are developed in terms of series of binomial coefficients and incomplete functions. The obtained results permit a very fast evaluation of Doppler function with a degree of accuracy higher than the one required for nuclear resonance absorption. Implementation in a computer program of our approach is described. (C) 2009 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : Doppler functions, Resonance absorption, Nuclear reactors, Cross-section, article
Cilt: 608
Sayı: 2
ISSN: 0168-9002
Sınıflandırma :
22
Design and simulation of 31
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Dergi:
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı:
Elsevier Science Bv
Yazar(lar) :
H. Duran Yildiz , R. Cakir , D. Porsuk
Konu :
Superconducting cavities, Linear accelerator, Radiofrequency, Accelerating gradient
Yıl :
2015
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
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Kaydet
Design and simulation of a superconducting gun cavity with 31/2 cells have been studied in order to give the first push to the electron beam for the linear accelerating system at the Institute of Accelerator Technologies at Ankara University. Electrons are accelerated through the gun cavity with the help of the Radiofrequency power suppliers from cryogenic systems. Accelerating gradient should be as high as possible to accelerate electron beam inside the cavity. in this study, electron beam reaches to 9.17 MeV energy at the end of the gun cavity with the accelerating gradient; E-c=1921 MV/m. 1.3 GHz gun cavity consists of three TESLA-like shaped cells while the special designed gun-cell includes a cathode plug. Optimized important beam parameters inside the gun cavity, average beam current 3 mA, transverse emittance 2.5 mm mrad, repetition rate 30 MHz and other parameters are obtained for the SASE-FEL System. the Superfish/Poisson program is used to design each cell of the superconducting cavity. Superconducting gun cavity and Radiofrequency properties are studied by utilizing 2D Superfish/Poisson, 3D Computer Simulation Technology Microwave Studio, and 3D Computer Simulation Technology Particle Studio. Superfish/Poisson is also used to optimize the geometry of the cavity cells to get the highest accelerating gradient. the behavior of the particles along the beamline is included in this study. ASTRA Code is used to track the particles. (C) 2015 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : Superconducting cavities, Linear accelerator, Radiofrequency, Accelerating gradient, article
Cilt: 785
ISSN: 0168-9002
Sınıflandırma :
23
Revealing low-energy part of the beta spectra
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Dergi:
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı:
Elsevier Science Bv
Yazar(lar) :
Selvi , S , Celiktas , C
Yıl :
2002
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
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Kaydet
An effective method is proposed to separate electronic noise from the beta-particle spectra revealing lower energy part of the spectra. The available methods for reducing the noise problem cut the noise along with the low-energy part of the beta spectra by using a discriminator. Our setup eliminates this undesirable effect by shifting the noise toward the lowest energy, scale leaving the low-energy part of spectra undisturbed. We achieved this noise-pulse-separation by treating the noise as a pulse so that we can exploit the application of the pulse-shape analyzer equipment used for pulse shape identification of particles and rejection of defective pulses. To the best of our knowledge this method of the noise separation is a novel approach. (C) 2002 Elsevier Science B.V. All rights reserved.
Anahtar Kelimeler : article
Cilt: 482
Sayı: 01.Feb
ISSN: 0168-9002
Sınıflandırma :
24
Systematic errors in thermoluminescence
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Dergi:
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı:
Elsevier Science Bv
Yazar(lar) :
Ege A. , Wang Y. , Townsend P. D.
Konu :
thermoluminescence, luminescence, defects
Yıl :
2007
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
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Kaydet
Thermoluminescence measurements potentially are distorted by a variety of systematic errors. Major difficulties are encountered with temperature values as there are inevitable temperature gradients which become more severe at higher heating rates. Distorted temperature scales need not introduce problems in radiation dosimetry but must be corrected for kinetic analyses of the thermoluminescence processes. Additionally one must correct for changes in emission spectra with temperature and separate wavelength dependent glow curve processes. The various problems of such systematic errors are considered as well as their wider consequences in comparing the luminescence with other measurement techniques applied to the same materials. (C) 2007 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : thermoluminescence, luminescence, defects, article
Cilt: 576
Sayı: 02.Mar
ISSN: 0168-9002
Sınıflandırma :
25
Lifetime measurements using a plunger device and the EUCLIDES Si array at the GALILEO gamma-ray spectrometer
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Dergi:
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
Yayıncı:
Elsevier
Yazar(lar) :
Bradbury J. , Testov D. , Bakes S. , Goasduff A. , Mengoni D. , Valiente-Dobon J. J. , Liu H.
Konu :
gamma-ray spectroscopy gamma-ray spectrometer, Si-array, Lifetime measurements, Plunger
Yıl :
2020
Nuclear Instruments & Methods in Physics Research Section A-Accelerators Spectrometers Detectors and Associated Equipment
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Kaydet
The GALILEO gamma-ray spectrometer, installed at the Laboratori Nazionali di Legnaro (LNL), benefits from intense stable beams provided by the Tandem-ALPI-PIAVE accelerator complex and from radioactive beams to be delivered in the near future by the SPES facility. the spectrometer is complemented with a variety of ancillary devices to allow for nuclear structure and reaction studies. the 4 pi Si-ball array EUCLIDES coupled to the GALILEO gamma-ray spectrometer represents one of the commonly used setup for experiments aiming at spectroscopic studies. High-efficiency detection of light-charged particles in a fusion-evaporation reaction guarantees good discrimination of different reaction channels and provides essential information for the kinematic reconstruction. in this paper we discuss a configuration of the EUCLIDES array developed for the lifetime measurements of nuclear excited states populated in a fusion-evaporation reaction. in such a configuration a part of the EUCLIDES detectors is disassembled allowing for the installation of a plunger device in the reaction chamber. the reduced configuration of EUCLIDES provides high detection efficiency necessary for reliable light charged-particle discrimination. We report on the commissioning experiment focused on the Ni-58(Ni-58,3p)I-113 reaction. the lifetimes of 11/2(-) and 15/2(-) states were measured by applying the Recoil Distance Doppler Shift method to be equal to 206(20) ps and 7.9(12) ps correspondingly and were in good agreement with the values cited in the literature. Thus, the combination of the GALILEO and EUCLIDES arrays, and the plunger device has resulted in a powerful experimental setup to determine lifetimes of excited states in neutron-deficient nuclei in the picosecond range.
Anahtar Kelimeler : gamma-ray spectroscopy gamma-ray spectrometer, Si-array, Lifetime measurements, Plunger, article
Cilt: 979
ISSN: 0168-9002
Sınıflandırma :
26
Wide dynamic range acquisition system for innovative radiation detectors
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Kaynak :
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Dergi:
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Yayıncı:
Elsevier Science Bv
Yazar(lar) :
M. Petasecca , B. Alpat , G. Ambrosi , M. Menichelli , A. Papi , P. Cirrone , F. Ferrera
Konu :
High dynamic-range electronics, Silicon detectors
Yıl :
2010
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Yayıncı Web Sitesi
Kaydet
There is particular interest to develop low-noise and wide dynamic range data acquisition systems for silicon detectors in view of using the same acquisition readout electronics for a wide range of application fields like monitoring and characterization of radiation sources or particle beams. In the framework of a research project for the qualification of Components Off The Shelf (COTS) for their use in space, research groups from INFN-Perugia, INFN-LNS and from MAPRAD have developed a fully automated, remote controllable, wide dynamic range acquisition system for silicon strip or pixelated detectors. Its design and a basic description of the performance are given here. (C) 2008 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : High dynamic-range electronics, Silicon detectors, conferenceObject
Cilt: 617
Sayı: 1-3
ISSN: 0168-9002
Sınıflandırma :
27
Development of MOS-FET dosimeters for use in high radiation fields
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Dergi:
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
Yayıncı:
Elsevier
Yazar(lar) :
G. Kramberger , K. Ambrozic , U. Gurer , B. Hiti , H. Karacali , I Mandic , E. Yilmaz
Konu :
Dosimeter, MOS-FET, Oxide charge
Yıl :
2020
Nuclear Instruments & Methods In Physics Research Section A-Accelerators Spectrometers Detectors And Associated Equipment
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Kaydet
Several sets of MOS-FET dosimeters dedicated for use in high dose environments at particle physics experiments and nuclear reactors were produced by NURDAM. Various oxide thicknesses ranging from 40 nm to 800 nm were employed to study sensitivity and dynamic range of the dosimeters. The sensors were exposed to ionization doses up to almost 700 kGy of reactor gamma-rays in two different ways; several sets of sensors were exposed in steps to fixed doses and read out in-between, while one set was continuously measured during the irradiations. A calibrated ionization cell in combination with precise simulation of the radiation environment in the reactor was used to accurately determine the dose received by the sensors. The agreement between sets of samples irradiated in different irradiation channels, hence dose rates, and different readout schemes was found to be very good. The dependence of the threshold voltage on the received dose was characterized over the entire range of doses. Sensitivity, dynamic range, saturation and breakdown voltages of sensors were investigated. After the irradiations, isothermal annealing at various temperatures took place to determine the sensor response over the extended periods of time in low dose rate fields.
Anahtar Kelimeler : Dosimeter, MOS-FET, Oxide charge, article
Cilt: 978
ISSN: 0168-9002
Sınıflandırma :
28
Study of electro-chemical properties of metal-oxide interfaces using a newly constructed ambient pressure X-ray photoelectron spectroscopy endstation
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NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yayıncı:
ELSEVIER SCIENCE BV
Yazar(lar) :
Funda , Grass Aksoy
Konu :
Electron energy analyzer, Ambient pressure X-ray photoelectron spectroscopy, Catalysis, Electrochemistry, Rh nanoparticles
Yıl :
2011
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
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 Piri Tam Metin Bulucu
Kaydet
In this report, we briefly describe the general design principles and construction of a newly developed ambient pressure X-ray photoelectron spectroscopy system. This system provides an imaging mode with < 20 mu m spatial resolution in one dimension as well as an angle-resolved mode. The new imaging mode enables us to study structured surfaces under catalytically and environmentally relevant conditions. To illustrate this capability, in situ studies on a Au-SiO2 heterojunction and Rh-TiO2 metal-support system are presented. This new system can probe structured surfaces near ambient pressure as a function of temperature, pressure, electrical potential, local position, and time. It is a valuable in situ tool to detect material transformations at the micrometer scale. (C) 2010 Elsevier B.V. All rights reserved.
DOI : 10.1016/j.nima.2010.12.171
Anahtar Kelimeler : Electron energy analyzer, Ambient pressure X-ray photoelectron spectroscopy, Catalysis, Electrochemistry, Rh nanoparticles, article
Cilt: 645
Sayı: 1
ISSN: 0168-9002
29
Scintillating fiber detectors for the HypHI project at GSI
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Dergi:
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
Yayıncı:
ELSEVIER SCIENCE BV
Yazar(lar) :
D. Nakajima , B. Oezel-Tashenov , S. Bianchin , O. Borodina , V. Bozkurt , B. Gokuzum , T. Fukuda
Konu :
Hypernuclear spectroscopy, Scintillating fiber detectors, Tracking detectors
Yıl :
2009
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
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Kaydet
The construction and properties of three sets of two-dimensional scintillating fiber detector arrays for tracking of charged particles used in the HypHI Phase 0 experiment at GSI will be reported in this paper. The position resolutions and the detection efficiency of detectors have been obtained for each layer of detectors by using Li-6 primary beams and particles with Z = 1 produced by fragment reactions of Xe-136 projectiles on the hydrogen target. Besides, the response of energy deposition of charged particles in the first detector set placed right behind the target has been studied by using light projectile fragments with Z = 1, 2 and 3 produced by Ni-58 and C-12 beams. Extracted resolutions for energy deposition and position as well as the detection efficiency fulfill the requirements of the HypHl Phase 0 experiment. (C) 2009 Elsevier B.V. All rights reserved.
Anahtar Kelimeler : Hypernuclear spectroscopy, Scintillating fiber detectors, Tracking detectors, article
Cilt: 608
Sayı: 2
ISSN: 0168-9002
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