A time projection chamber for high-rate experiments: Towards an upgrade of the ALICE TPC

被引:24
作者
Ketzer, Bernhard [1 ]
机构
[1] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany
关键词
GEM; TPC; Ion backflow; Specific energy loss; FOPI; ALICE; GEM-BASED TPC; GAS DETECTORS;
D O I
10.1016/j.nima.2013.08.027
中图分类号
TH7 [仪器、仪表];
学科分类号
0804 ; 080401 ; 081102 ;
摘要
A Time Projection Chamber (TPC) is a powerful detector for three-dimensional tracking and particle identification for ultra-high multiplicity events. It is the central tracking device of many experiments, e.g. the ALICE experiment at CERN. The necessity of a switching electrostatic gate, which prevents ions produced in the amplification region of the MWPCs from entering the drift volume, however, restricts its application to trigger rates of the order of 1 kHz. Charge amplification by Gas Electron Multiplier (GEM) foils instead of proportional wires offers an intrinsic suppression of the ion backflow, although not to the same level as a gating grid. Detailed Monte Carlo simulations have shown that the distortions due to residual space charge from back-drifting ions can be limited to a few cm, and thus can be corrected using standard calibration techniques. A prototype GEM-TPC has been built with the largest active volume to date for a detector of this type. It has been commissioned with cosmics and particle beams at the FOPI experiment at GSI, and was employed for a physics measurement with pion beams. For the future operation of the ALICE TPC at the CERN LHC beyond 2019, where Pb-Pb collision rates of 50 kHz are expected, it is planned to replace the existing MWPCs by GEM detectors, operated in a continuous, triggerless readout mode, thus allowing an increase in event rate by a factor of 100. As a first step of the R&D program, a prototype of an Inner Readout Chamber was equipped with large-size GEM foils and exposed to beams of protons, pions and electrons from the CERN PS. In this paper, new results are shown concerning ion backflow, spatial and momentum resolution of the FOPI GEM-TPC, detector calibration, and dE/dx resolution with both detector prototypes. The perspectives of a GEM-TPC for ALICE with continuous readout will be discussed. (C) 2013 CERN. Published by Elsevier B.V. All rights reserved.
引用
收藏
页码:237 / 240
页数:4
相关论文
共 19 条
[1]   RELATIVISTIC CHARGED-PARTICLE IDENTIFICATION BY ENERGY-LOSS [J].
ALLISON, WWM ;
COBB, JH .
ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, 1980, 30 :253-298
[2]   The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events [J].
Alme, J. ;
Andres, Y. ;
Appelshaeuser, H. ;
Bablok, S. ;
Bialas, N. ;
Bolgen, R. ;
Bonnes, U. ;
Bramm, R. ;
Braun-Munzinger, P. ;
Campagnolo, R. ;
Christiansen, P. ;
Dobrin, A. ;
Engster, C. ;
Fehlker, D. ;
Foka, Y. ;
Frankenfeld, U. ;
Gaardhoje, J. J. ;
Garabatos, C. ;
Glaessel, P. ;
Gutierrez, C. Gonzalez ;
Gros, P. ;
Gustafsson, H-A ;
Helstrup, H. ;
Hoch, M. ;
Ivanov, M. ;
Janik, R. ;
Junique, A. ;
Kalweit, A. ;
Keidel, R. ;
Kniege, S. ;
Kowalski, M. ;
Larsen, D. T. ;
Lesenechal, Y. ;
Lenoir, P. ;
Lindegaard, N. ;
Lippmann, C. ;
Mager, M. ;
Mast, M. ;
Matyja, A. ;
Munkejord, M. ;
Musa, L. ;
Nielsen, B. S. ;
Nikolic, V. ;
Oeschler, H. ;
Olsen, E. K. ;
Oskarsson, A. ;
Osterman, L. ;
Pikna, M. ;
Rehman, A. ;
Renault, G. .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2010, 622 (01) :316-367
[3]   Construction, test and commissioning of the triple-gem tracking detector for compass [J].
Altunbas, C ;
Capéans, M ;
Dehmelt, K ;
Ehlers, J ;
Friedrich, J ;
Konorov, I ;
Gandi, A ;
Kappler, S ;
Ketzer, B ;
De Oliveira, R ;
Paul, S ;
Placci, A ;
Ropelewski, L ;
Sauli, F ;
Simon, F ;
van Stenis, M .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 490 (1-2) :177-203
[4]   Discharge studies and prevention in the gas electron multiplier (GEM) [J].
Bachmann, S ;
Bressan, A ;
Capeáns, M ;
Deutel, M ;
Kappler, S ;
Ketzer, B ;
Polouektov, A ;
Ropelewski, L ;
Sauli, F ;
Schulte, E ;
Shekhtman, L ;
Sokolov, A .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2002, 479 (2-3) :294-308
[5]  
Ball M., 2012, ARXIV12070013PHYSICS
[6]   AFTER, an ASIC for the readout of the large T2K Time Projection Chambers [J].
Baron, Pascal ;
Calvet, Denis ;
Delagnes, Eric ;
de la Broise, Xavier ;
Delbart, Alain ;
Druillole, Frederic ;
Mazzucato, Eduardo ;
Monmarthe, Estelle ;
Pierre, Francois ;
Zito, Marco .
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2008, 55 (03) :1744-1752
[7]   Charge transfer of GEM structures in high magnetic fields [J].
Blatt, S ;
Giffels, M ;
Kaussen, G ;
Killenberg, M ;
Lotze, S ;
Mnich, J ;
Münnich, A ;
Roth, S ;
Sefkow, F ;
Tonutti, M ;
Vogel, A ;
Weber, M ;
Wienemann, P .
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 2006, 150 :155-158
[8]   Simulation of space-charge effects in an ungated GEM-based TPC [J].
Boehmer, F. V. ;
Ball, M. ;
Dorheim, S. ;
Hoeppner, C. ;
Ketzer, B. ;
Konorov, I. ;
Neubert, S. ;
Paul, S. ;
Rauch, J. ;
Vandenbroucke, M. .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2013, 719 :101-108
[9]   The ALTRO chip: A 16-channel A/D converter and digital processor for gas detectors [J].
Bosch, RE ;
de Parga, AJ ;
Mota, B ;
Musa, L .
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2003, 50 (06) :2460-2469
[10]   The PANDA GEM-based TPC prototype [J].
Fabbietti, L. ;
Angerer, H. ;
Arora, R. ;
Beck, R. ;
Berger, M. ;
Buehler, P. ;
Cargnelli, M. ;
Doerheim, S. ;
Hehner, J. ;
Herrmann, N. ;
Hoeppner, C. ;
Kaiser, D. ;
Ketzer, B. ;
Mladen, K. ;
Kleipa, V. ;
Konorov, I. ;
Kunkel, J. ;
Lalik, R. ;
Lang, M. ;
Leifels, Y. ;
Marton, J. ;
Neubert, S. ;
Paul, S. ;
Schmitz, R. ;
Schmidt, C. ;
Schwab, S. ;
Sovk, D. ;
Suzuki, K. ;
Thoma, U. ;
Vandenbroucke, M. ;
Voss, B. ;
Voss, J. ;
Walther, D. ;
Weinert, J. ;
Winnebeckd, A. ;
Zenke, F. ;
Zhang, X. ;
Zmeskal, J. .
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2011, 628 (01) :204-208