Lavezzi, L. and Alexeev, M. and Amoroso, A. and Baldini Ferroli, R. and Bertani, M. (2018) Test beam results with prototypes for the new Cylindrical GEM Inner Tracker of the BESIII experiment. Il nuovo cimento C, 41 (1-2). pp. 1-4. ISSN 1826-9885
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Abstract
A cylindrical GEM tracker is under construction in order to replace and improve the inner tracking system of the BESIII experiment. Tests with planar chamber prototypes were carried out on the H4 beam line of SPS (CERN) with muons of 150 GeV/c momentum, to evaluate the efficiency and resolution under different working conditions. The obtained efficiency was in the 96–98% range. Two complementary algorithms for the position determination were developed: the charge centroid and the μ-TPC methods. With the former, resolutions < 100 μm and < 200 μm were achieved without and with magnetic field, respectively. The μTPC improved these results. By the end of 2016, the first cylindrical prototype was tested on the same beam line. It showed optimal stability under different settings. The comparison of its performance with respect to the planar chambers is ongoing. Here, the results of the planar prototype tests will be addressed.
| Item Type: | Article |
|---|---|
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 17 Nov 2020 14:43 |
| Last Modified: | 17 Nov 2020 14:43 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/20162 |
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