A low-background Micromegas detector for axion searches

被引：9

作者：

Andriamonje, S

Aune, S

Dafni, T

Delagnes, E

Fanourakis, GK ^{[1
]}

Ribas, EF

Geralis, T

Giomataris, Y

Kousouris, K

Papaevangelou, T

Zachariadou, K

机构：

[1] NCSR Demokritos, Inst Nucl Phys, GR-15310 Athens, Greece

[2] Tech Univ Darmstadt, Inst Kernphys, D-64287 Darmstadt, Germany

[3] Ctr Etud Saclay, DAPNIA, F-91191 Gif Sur Yvette, France

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2004年 / 535卷 / 1-2期

关键词：

Micromegas; low-background detector; micropattern detectors; X-Y readout; X-ray detection;

D O I：

10.1016/j.nima.2004.07.231

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A micropattern low-background detector based on the Micromegas technology has been designed and constructed for the CERN Axion Search experiment CAST. The detector is made of low natural radioactivity materials and has a two-dimensional readout with X-Y strip structure. It is operated with an Argon/Isobutane (95%/5%) mixture and is controlled by a VME data acquisition system. The detector is sensitive to photons in the energy range of 1-10 keV, it has a linear response, excellent stability and a very good energy resolution (14% FWHM at 5.9 keV). This device has been in stable operation since October 2002, taking data during the running periods of the CAST experiment. At the end of summer 2003, the detector was upgraded with a flash ADC readout of the grid signal to further improve its background rejection capability. The currently achieved background rate under normal operation is about 2.0 x 10(-5) event s/keV/cm(2)/s with better than 85% software efficiency. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：309 / 313

页数：5

共 11 条

[1] A Micromegas detector for the CAST experiment [J].

Andriamonje, S ;

Aune, S ;

Dafni, T ;

Fanourakis, G ;

Ribas, EF ;

Fischer, H ;

Franz, J ;

Geralis, T ;

Giganon, A ;

Giomataris, Y ;

Heinsius, FH ;

Königsmann, K ;

Papaevangelou, T ;

Zachariadou, K .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2004, 518 (1-2) :252-255

[2]

ANDRIAMONJE S, MICOMEGAS PHOTON DET

[3]

Collar J.I., 2001, NUCL INSTRUM METH A, V469, P249

[4]

DELAGNES E, FLASH ADV VME MOD DE

[5] MICROMEGAS: A high-granularity position-sensitive gaseous detector for high particle-flux environments [J].

Giomataris, Y ;

Rebourgeard, P ;

Robert, JP ;

Charpak, G .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1996, 376 (01) :29-35

[6] Development and prospects of the new gaseous detector "Micromegas" [J].

Giomataris, Y .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1998, 419 (2-3) :239-250

[7] CONSTRAINTS IMPOSED BY CP CONSERVATION IN PRESENCE OF PSEUDOPARTICLES [J].

PECCEI, RD ;

QUINN, HR .

PHYSICAL REVIEW D, 1977, 16 (06) :1791-1797

[8] CP CONSERVATION IN PRESENCE OF PSEUDO-PARTICLES [J].

PECCEI, RD ;

QUINN, HR .

PHYSICAL REVIEW LETTERS, 1977, 38 (25) :1440-1443

[9]

SANTIARD JC, 1995, NUCL I METH A, P360

[10] A decommissioned LHC model magnet as an axion telescope [J].

Zioutas, K ;

Aalseth, CE ;

Abriola, D ;

Avignone, FT ;

Brodzinski, RL ;

Collar, JI ;

Creswick, R ;

Di Gregorio, DE ;

Farach, H ;

Gattone, AO ;

Guérard, CK ;

Hasenbalg, F ;

Hasinoff, M ;

Huck, H ;

Liolios, A ;

Miley, HS ;

Morales, A ;

Morales, J ;

Nikas, D ;

Nussinov, S ;

Ortiz, A ;

Savvidis, E ;

Scopel, S ;

Sievers, P ;

Villar, JA ;

Walckiers, L .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1999, 425 (03) :480-487

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