Piri Keşif Aracı

1

0

Başyazılar

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

Alex Dragt , Jon Orloff

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

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Kaydet

DOI : 10.1016/j.nima.2003.11.110

Cilt: 519
Sayı: 1-2
Sayfa: vii-0
ISSN: 0168-9002

2

Author Index

Dergi Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Ek Bilgiler

Kaydet

DOI : 10.1016/S0168-9002(04)00169-X

Cilt: 519
Sayı: 3
Sayfa: 695-704
ISSN: 0168-9002

3

Calculation of focussing quality of the electrostatic mirror objective free of the third-order spherical aberration

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

S.B. Bimurzaev , G.S. Serikbaeva , E.M. Yakushev

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

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Kaydet

The formulas for the coefficients of spherical aberration of axisymmetrical electrostatic electron mirror have been obtained. The technique of excluding from the integrand of high-order derivatives of the potential axial distribution in mirror systems is given. The conditions of elimination of spherical aberration in a three-electrode axisymmetrical mirror consisting of coaxial cylinders of equal diameter are found. Using a method of direct numerical calculations of the exact equations of trajectories, the fifth-order spherical aberration coefficient of a mirror objective was calculated and its limiting resolution was estimated. The calculations show that the resolution of the electrostatic mirror objective under consideration is not worse than that of the best objectives with magnetic lenses.

DOI : 10.1016/j.nima.2003.11.122

Cilt: 519
Sayı: 1-2
Sayfa: 70-75
ISSN: 0168-9002

4

Design and analysis of beam separator magnets for third generation aberration compensated PEEMs

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

Y.K. Wu , D.S. Robin , E. Forest , R. Schlueter , S. Anders , J. Feng , H. Padmore , D.H. Wei

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

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Kaydet

A state of the art X-ray photoemission electron microscope (PEEM2) is operational at the Advanced Light Source at a resolution of typically 50nm for a range of chemical and magnetic surface studies. A new microscope, PEEM3, is under development with an aim of achieving a resolution of 5nm and more than an order of magnitude increase in transmission at the nominal resolution of PEEM2. The resolution and flux improvement is realized by providing geometric and chromatic aberration compensations in the system using an electron mirror and a beam separator magnet. The nearly aberration-free design of the beam separator is critical to the performance of third generation PEEMs. In this paper, we present the optics design model, optimal operation parameters, analyses of aberration impact, as well as the mechanical alignment tolerance for PEEM3 separator prototypes. In particular, we emphasize the importance of a new semi-analytical approach to design complex charged particle optics using the truncated power series algebra. Because of its ability to compute high-order aberrations, this approach allows systematic and comprehensive analyses of any charged particle optics systems with analytical electric and magnetic fields.

DOI : 10.1016/j.nima.2003.11.160

Cilt: 519
Sayı: 1-2
Sayfa: 230-241
ISSN: 0168-9002

5

Inside front cover (Editorial Board)

Dergi Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

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Kaydet

DOI : 10.1016/S0168-9002(04)00013-0

Cilt: 518
Sayı: 3
Sayfa: IFC-0
ISSN: 0168-9002

6

Committees

Konferans Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Ek Bilgiler

Kaydet

DOI : 10.1016/j.nima.2003.10.006

Cilt: 518
Sayı: 1-2
Sayfa: ix-0
ISSN: 0168-9002

7

Performances of the CsI(Tl) detector element of the GLAST calorimeter

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

D. Bédérède , E. Bougamont , Ph. Bourgeois , F.X. Gentit , Y. Piret , G. Tauzin

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

The CsI(Tl) Detector Element (CDE) is the unit of detection of the calorimeter subsystem of the Large Area Telescope (LAT) of the GLAST satellite (IEEE Nuclear Science Symposium, 2002), which will be launched in September 2006. The LAT consists of 4×4 identical towers, each one including a strip silicon tracker on the top and a CsI(Tl) calorimeter on the bottom. A segmented plastic scintillator anticoincidence detector surrounds the 16 towers. The calorimeter modules, 8 layers of 12 CDEs each, have a hodoscopes shape to allow the measurement of the gamma-ray direction.

DOI : 10.1016/j.nima.2003.10.011

Cilt: 518
Sayı: 1-2
Sayfa: 15-18
ISSN: 0168-9002

8

Large-scale production of Monitored Drift Tube chambers for the ATLAS muon spectrometer

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

F. Bauer , S. Horvat , O. Kortner , H. Kroha , A. Manz , S. Mohrdieck , R. Richter , V. Zhuravlov

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

Precision drift tube chambers with a sense wire positioning accuracy of better than 20μm are under construction for the ATLAS muon spectrometer. 70% of the 88 large chambers for the outermost layer of the central part of the spectrometer have been assembled. Measurements during chamber construction of the positions of the sense wires and of the sensors for the optical alignment monitoring system demonstrate that the requirements for the mechanical precision of the chambers are fulfilled.

DOI : 10.1016/j.nima.2003.10.026

Cilt: 518
Sayı: 1-2
Sayfa: 69-72
ISSN: 0168-9002

9

The Silicon Tracker of the AMS02 experiment

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

C. Cecchi

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

After the successful test flight in 1998, the AMS experiment has been redesigned to improve its performances for future operation on the ISS. The Silicon Tracker is the central detector of the AMS-02 magnetic spectrometer. Eight planes of double-sided microstrip detectors embedded in a magnetic field of ∼0.8T allow for an accurate 3D reconstruction of particles trajectories and their rigidity measurement up to several TVs. The tracker is made of ∼6.4m2 of silicon with a single point resolution of 10(30)μm in the bending (not bending) coordinate. The description of the tracker system and its performance will be presented.

DOI : 10.1016/j.nima.2003.10.045

Cilt: 518
Sayı: 1-2
Sayfa: 145-146
ISSN: 0168-9002

10

The superconducting magnet system of the alpha magnetic spectrometer AMS-02

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

B. Blau , S.M. Harrison , H. Hofer , S.R. Milward , G. Kaiser , John S.H. Ross , S.C.C. Ting , J. Ulbricht

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

The Alpha Magnetic Spectrometer AMS-02 is a particle physics detector designed to search for antimatter, dark matter and the origin of cosmic rays in space. The detector will be installed on the International Space Station in 2005.

DOI : 10.1016/j.nima.2003.10.043

Cilt: 518
Sayı: 1-2
Sayfa: 139-142
ISSN: 0168-9002

11

Parallel Ionization Multiplier (PIM): application of a new concept of gaseous structure to tracking detectors

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

L. Luquin , R. Dallier , P. Laloux , M. Leguay , P. Leray , S. Lupone , V. Métivier , E. Morteau , J. Samarati , N. Servagent , D. Thers , G. Charpak , P. Coulon , M. Meynadier

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

A new amplifying structure has been developed for beta imaging detectors: the Parallel Ionization Multiplier (PIM). PIM is made of a thin sandwich of two metallic micromeshes separated by a new laser machined insulating spacer. This structure allows high gain (105) with a good efficiency and a two-dimensional spatial resolution below 50 μm without strong discharge limitation. The capabilities of the PIM are now investigated in order to be used by high-energy physics experiments. A prototype of a tracking detector for charged particles using the PIM structure will be described. Thanks to the very small avalanche extension, the use of a highly segmented anode is possible. This detector would support high rate running conditions of hadron experiment.

DOI : 10.1016/j.nima.2003.10.042

Cilt: 518
Sayı: 1-2
Sayfa: 135-138
ISSN: 0168-9002

12

Commissioning and first tests of the MAGIC telescope

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

C. Baixeras , D. Bastieri , C. Bigongiari , O. Blanch , G. Blanchot , R. Bock , T. Bretz , A. Chilingarian , J.A. Coarasa , E. Colombo , J.C. Contreras , D. Corti , J. Cortina , C. Domingo , E. Domingo , D. Ferenc , E. Fernández , J. Flix , W. Wittek

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

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Kaydet

Major Atmospheric Gamma Imaging Cherenkov telescope is starting its operations with a set of engineering runs to tune the telescope subsystem elements to be ready for the first physics campaign. Many technical improvements have been developed and implemented in several elements of the telescope to reach the lowest energy threshold ever obtained by an Imaging Atmospheric Cherenkov Telescope. A general description of the telescope is presented. The commissioning of the telescopes elements is described and the expected performances are reviewed with the final detector set-up.

DOI : 10.1016/j.nima.2003.10.057

Cilt: 518
Sayı: 1-2
Sayfa: 188-192
ISSN: 0168-9002

13

Geometric anti-spring vertical accelerometers for seismic monitoring

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

Alessandro Bertolini , Nicolò Beverini , Giancarlo Cella , Riccardo DeSalvo , Francesco Fidecaro , Mario Francesconi , Duccio Simonetti

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

A new low-frequency, very-low noise, vertical accelerometer is presented. The sensor has been designed to be part of an array of few hundred such devices to be used to predict local gravity fluctuations. These fluctuations, acting on the mirrors of gravitational wave interferometers, are a fundamental source of noise that can only be subtracted from the recorded signal. The motion of a 36g mass supported by loaded springs is monitored by a high-resolution capacitance sensor; a feedback force actuator keeps the mass in the equilibrium position. The feedback signal is proportional to the acceleration in the frequency range 0– 150Hz. The accelerometer spectral sensitivity is better than 10−9m/Hz in the same band, with a dynamic range exceeding 150dB.

DOI : 10.1016/j.nima.2003.10.069

Cilt: 518
Sayı: 1-2
Sayfa: 233-235
ISSN: 0168-9002

14

Interferometric adaptive optics system for laser noise reduction in virgo

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

S. Avino , F. Barone , E. Calloni , R. De Rosa , L. Di Fiore , L. Milano , K. Quipiani

Yıl :

2004

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

The first adaptive optics system for laser beam geometrical fluctuations correction, based on interferometric detection of aberrations, is presented. The bandwidth of the resulting feed-back is of several hundreds Hz and the residual fluctuations, measured on the error signal, are better than what can be obtained by typical Shack–Hartmann technique, encouraging for use in long baseline interferometers for GW detection.

DOI : 10.1016/j.nima.2003.10.067

Cilt: 518
Sayı: 1-2
Sayfa: 226-227
ISSN: 0168-9002

15

Study of counting characteristics of porous dielectric detectors of radiations

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

M.P Lorikyan

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

Multiwire and microstrip porous detectors have been developed and investigated for DC operation. The multiwire porous detector consists of anode wires, an Al cathode and a gap between them filled with porous CsI. The microstrip porous detector consists of an insulating plate covered with metallic strips, micromesh cathode and a gap between them filled with porous CsI. For some time after being manufactured, these detectors’ performances are non-stable and they have poor spatial resolution. However, after being kept in vacuum for a certain time, they spontaneously acquire stability and spatial resolution better than 100 μm and have detection efficiencies of 100% and 70% for heavily ionizing α-particles and 5.9 keV X-rays, respectively. The MWPDD performs stably at an intensity of heavily ionizing α-particles of 711 cts/(cm2 s).

DOI : 10.1016/j.nima.2003.07.029

Cilt: 515
Sayı: 3
Sayfa: 701-717
ISSN: 0168-9002

16

Use of Si strip detectors for low-energy particles in compact geometry

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

U.C. Bergmann , H.O.U. Fynbo , O. Tengblad

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

A potential problem with the use of large-area silicon detectors in close geometry and for low-energy charged particles is discussed. The effects of a dead layer in a commonly used double sided silicon strip detector design are investigated. Significant energy shifts and rise in detection thresholds are caused. Solutions based on the high granularity of these detectors and an event-by-event analysis of the dead-layer effects are offered.

DOI : 10.1016/j.nima.2003.07.016

Cilt: 515
Sayı: 3
Sayfa: 657-664
ISSN: 0168-9002

17

A study of prototype CdTe hard X- and γ-ray detectors

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

Ezio Caroli , Natalia Auricchio , Ariano Donati , Filomena Schiavone , John B Stephen , Giulio Ventura , Rui M.Curado da Silva , Paul Siffert , Makram Hage-Ali , Gianfranco Taiocchi

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

CdTe array detectors are being investigated for use in a variety of applications, ranging from medical diagnosis to high-energy astronomy. Herein, we present a study of the spatial resolution of several prototype CdTe arrays of varying thickness as a function of energy and angle of the incident radiation. These measurements were performed at the European Synchrotron Research Facility at Grenoble, France in the first week of July 2002. The energy range employed was between 100 and 500 keV, while the detectors consisted of a set of CdTe arrays containing elements of thicknesses between 3 and 8 mm. The spatial response of the detectors was measured using single site events, while the possibility of using this type of array detector also for measuring the degree of polarisation of the radiation was investigated using multi-site interactions.

DOI : 10.1016/j.nima.2003.08.061

Cilt: 513
Sayı: 1-2
Sayfa: 350-356
ISSN: 0168-9002

18

Pixel detectors for particle physics and imaging applications

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

N. Wermes

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

Semiconductor pixel detectors offer features for the detection of radiation which are interesting for particle physics detectors as well as for imaging e.g., in biomedical applications (radiography, autoradiography, protein crystallography) or in X-ray astronomy. At the present time hybrid pixel detectors are technologically mastered to a large extent and large-scale particle detectors are being built. Although the physical requirements are often quite different, imaging applications are emerging and interesting prototype results are available. Monolithic detectors, however, offer interesting features for both fields in future applications. The state of development of hybrid and monolithic pixel detectors, excluding CCDs, and their different suitability for particle detection and imaging, is reviewed.

DOI : 10.1016/S0168-9002(03)01905-3

Cilt: 512
Sayı: 1-2
Sayfa: 277-288
ISSN: 0168-9002

19

Performance of a 95μm pitch n-on-n silicon detector with floating strips

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

First measurements of charge sharing and collection for a 95μm pitch n-on-n silicon sensor with floating strips are presented. These measurements were made with an analogue front-end sampling at 40MHz. Strips with a significant signal are found to be correlated with opposite polarity signals in the strips neighbouring them.

DOI : 10.1016/S0168-9002(03)01791-1

Cilt: 511
Sayı: 1-2
Sayfa: 190-194
ISSN: 0168-9002

20

Medipix2 parallel readout system

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

V. Fanti , R. Marzeddu , P. Randaccio

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

A fast parallel readout system based on a PCI board has been developed in the framework of the Medipix collaboration.1

DOI : 10.1016/S0168-9002(03)01567-5

Cilt: 509
Sayı: 1-3
Sayfa: 171-175
ISSN: 0168-9002

21

The RPC system for the CMS experiment at the LHC

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

M. Abbrescia , A. Colaleo , G. Iaselli , F. Loddo , M. Maggi , B. Marangelli , S. Natali , S. Nuzzo , G. Pugliese , A. Ranieri , F. Romano , S. Altieri , G. Belli , G. Bruno , R. Guida , S.P. Ratti , C. Riccardi , P. Torre , P. Vitulo

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

The CMS detector at the LHC has a redundant muon system. Two independent muon systems are used in the L1 trigger. One of them is based on wire chambers, the other on RPC detectors. Properly combining the answers of the two systems results in a highly efficient L1 trigger with high flexibility from the point of view of rate control. Simulation results show, however, that the RPC system suffers from false triggers caused by coincidence of spurious hits. System improvements, which could avoid oiling the chambers, are possible. RPCs have also proved to be very useful for muon track reconstruction.

DOI : 10.1016/S0168-9002(03)01336-6

Cilt: 508
Sayı: 1-2
Sayfa: 137-141
ISSN: 0168-9002

22

Cosmic ray test station for ATLAS RPC

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

M Alviggi , V Canale , M Caprio , G Carlino , F Conventi , R de Asmundis , P Iengo , M.Della Pietra , D.Della Volpe , S Patricelli , L Romano , G Sekhniaidze

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

We describe the facility for RPC test with cosmic rays, designed and built at the laboratory of INFN and University of Naples. Trigger and tracking systems consist of a scintillator hodoscope and two drift chambers with track reconstruction resolution of ∼400μm. Trigger is provided by the twofold coincidence of scintillators covering a surface of 1m2. Two step motors move chambers synchronously along the station for RPC scanning. Up to eight RPCs can be tested simultaneously.

DOI : 10.1016/S0168-9002(03)01291-9

Cilt: 508
Sayı: 1-2
Sayfa: 124-127
ISSN: 0168-9002

23

Recent advances in high-brightness electron guns at AES

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

H. Bluem , A.M.M. Todd , M.D. Cole , J. Rathke , T. Schultheiss

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

We describe a number of active Advanced Energy Systems projects pertaining to the development of advanced, high-brightness electron guns for various applications. These projects include a fully superconducting, CW RF gun, nearing test, that utilizes the niobium surface as the photocathode material. An integrated 100 mA, low emittance DC/SRF gun, ideal as an injector for ERL-type light sources and intended as the injector for a 100 kW FEL, is in late design stage. A parallel high-power, CW, normal-conducting L-band RF gun project has just begun. The early performance analysis for this gun also shows good promise as an injector for ERL-type light sources. Lastly, a fully axisymmetric RF gun, operating in X-band, is being studied as a source of extremely bright electron bunches.

DOI : 10.1016/S0168-9002(03)01507-9

Cilt: 507
Sayı: 1-2
Sayfa: 215-219
ISSN: 0168-9002

24

Two-dimensional position resolution and correction of position dependence of pulse heights of superconducting series-junction detectors

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

M. Kurakado , S. Kamihirata , A. Kagamihata , K. Hirota , H. Hashimoto , H. Sato , H. Hotchi , H.M. Shimizu , K. Taniguchi

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

One of the drawbacks of the series-junction detector is that signal heights depend on position of incident photon. A series-junction detector with two-dimensional position resolution has been developed. The effective area is 1.5×1.5 mm2. The detector was irradiated by α particles and a position resolution of about 50 μm was obtained. Making use of this position resolution, the position dependence of pulse heights can be corrected, such that the energy resolution was improved from 11% to 0.79%.

DOI : 10.1016/S0168-9002(03)01370-6

Cilt: 506
Sayı: 1-2
Sayfa: 134-142
ISSN: 0168-9002

25

Development and applications of gas electron multiplier detectors

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

Fabio Sauli

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

Recent developments of the Gas Electron Multiplier (GEM) are described, as well as its applications as fast, position-sensitive detector in particle physics, medicine, neutron spectrometry and astrophysics.

DOI : 10.1016/S0168-9002(03)01050-7

Cilt: 505
Sayı: 1-2
Sayfa: 195-198
ISSN: 0168-9002

26

NEW DEVELOPMENTS IN PHOTODETECTION BEAUNE 2002

Konferans Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Ek Bilgiler

Kaydet

DOI : 10.1016/S0168-9002(03)00747-2

Cilt: 504
Sayı: 1-3
Sayfa: v-0
ISSN: 0168-9002

27

Analysis of the solar neutrino data

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

C. Peña-Garay

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

We analyse the solar neutrino data (pre-SNO) in the framework of two-neutrino, three-neutrino and four-neutrino schemes. We discuss the status of the different regimes that remain allowed (LMA, SMA and LOW-QVO). The solar and the atmospheric data are in good agreement with the CHOOZ data showing a preference for small θ13, where the stronger bound comes from the CHOOZ data. Also, we discuss the oscillations to active and sterile neutrinos in a unified picture: four-neutrino oscillations. Using the predictions for the next solar neutrino experiment, SNO, we discuss the questions that could be solved in the different frameworks. The data will be able to disfavour some of the solar regimes and also will be able to prove (or disprove) the 2+2 scenarios.

DOI : 10.1016/S0168-9002(03)00669-7

Cilt: 503
Sayı: 1-2
Sayfa: 182-186
ISSN: 0168-9002

28

Updated analysis of atmospheric neutrino data

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

G.L. Fogli , E. Lisi , A. Marrone

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

In the context of the latest (79.5kTy) Super-Kamiokande atmospheric neutrino data, we present an updated analysis of the mass and mixing parameters relevant for two-, three-, and four-family neutrino mixing. Oscillations in the νμ→ντ channel clearly emerge as the dominant mechanism responsible for the atmospheric νμ anomaly, with no significant indication for subdominant mixing with electron or sterile neutrinos. Upper bounds on subdominant mixing angles are also discussed.

DOI : 10.1016/S0168-9002(03)00668-5

Cilt: 503
Sayı: 1-2
Sayfa: 179-181
ISSN: 0168-9002

29

Some methods to evaluate the complicated Feynman integrals

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

A.V. Kotikov

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

I discuss a progress in calculating the Feynman integrals based on the Gegenbauer Polynomial Technique and the Differential Equation Method.

DOI : 10.1016/S0168-9002(03)00521-7

Cilt: 502
Sayı: 2-3
Sayfa: 615-617
ISSN: 0168-9002

30

Electron distributions in bremsstrahlung and virtual photon production

Araştırma Makalesi

Kaynak :

Science Direct

Yayıncı :

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yazar(lar) :

Guanghua Xu , Ed V. Hungerford

Yıl :

2003

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

Yayıncı Web Sitesi Tam Metin Özet Ek Bilgiler

Kaydet

Analytic expressions for electron distributions in bremsstrahlung and virtual photon radiation are derived and discussed. The results are used to investigate possible electron scattering geometries which maximize the virtual photon production at forward angles while limiting bremsstrahlung to acceptable values.

DOI : 10.1016/S0168-9002(03)00426-1

Cilt: 501
Sayı: 2-3
Sayfa: 602-614
ISSN: 0168-9002

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