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Title

A GEM based TPC with two large 3-GEM Towers
Authors
Radicioni, E.
Abgrall, Nicolas
Alcaraz, J.
Cervera Villanueva, Anselmo
Bene, Pierre
Blondel, Alain
Ferrere, Didier
Jover, G.V.
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Published in Nuclear Science Symposium Conference Record (Volume 6). San Diego, California (USA) - Oct. 29-Nov. 1 2006 - IEEE. 2006, p. 3842-3846
Abstract A large size prototype of a TPC with GEM amplification has been successfully built and operated. To obtain an active area larger than the one provided by the largest GEM foil on the market, 2 independent GEM towers have been hosted on a single pad plane minimising the dead space between the towers. This readout structure has been inserted in a test-bed available at CERN, inherited from the HARP-TPC installation at the PS East Hall, made by a cylindrical field-cage of 80 cm diameter and around 150 cm active length, all placed inside a solenoid magnet capable of 0.7 T. This setup is equipped with about 1500 readout channels. The initial choice for relatively large squared pads (8mm) is driven by the need to study the performances in view of a neutrino oscillation experiment, where the track density is low. A systematic study of the performances has been performed as a function of several parameters like the operating voltages of the GEM towers, the magnetic and the drift fields and the gas mixture. Special care has been taken in the study of the gas, with a large range of mixtures including Ar:CF4:iC4H10.
Keywords TPC — GEM — T2K — Gas Electron Multiplier
Identifiers
ISBN: 978-1-4244-0560-2
Full text
Proceedings chapter (Published version) (458 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://ieeexplore.ieee.org/lpdocs/epic03/wrapper.htm?arnumber=4179871
Structures
Faculté des sciences / Section de physique / Département de physique nucléaire et corpusculaire
Citation
(ISO format) 		RADICIONI, E. et al. A GEM based TPC with two large 3-GEM Towers. In: Nuclear Science Symposium Conference Record (Volume 6). San Diego, California (USA). [s.l.] : IEEE, 2006. p. 3842-3846. doi: 10.1109/NSSMIC.2006.353829 https://archive-ouverte.unige.ch/unige:39199

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Deposited on : 2014-08-05

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