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@ARTICLE{Jena:361080,
author = {Nandy, Ekata and Agarwal, Apar and Singhal, Vikas and
Ghosh, Chandrasekhar and Negi, Vinod and Saini, Jogender and
Dubey, Anand K. and Chattopadhyay, Subhasis},
editor = {Jena, Satyajit and Shivaji, Ambresh and Bhardwaj, Vishal
and Lochan, Kinjalk and Jassal, Harvinder Kaur and Joseph,
Anosh and Khuswaha, Pankaj},
title = {{P}erformance {S}tudy of {M}ini {M}u{C}h ({M}uon {C}hamber)
{D}etectors in {M}ini {CBM} {E}xperiment at {FAIR} with
{P}b+{A}u {C}ollisions at 1.06 {AG}e{V}},
journal = {Springer Proceedings in Physics},
address = {Singapore},
publisher = {Springer Nature Singapore},
reportid = {GSI-2025-00954},
isbn = {978-981-97-0288-6 (print)},
pages = {577-582},
year = {2024},
note = {Missing Journal: = 1867-4941 (import from CrossRef Book
Series, Journals: repository.gsi.de)},
abstract = {The CBM experiment at FAIR aims to explore the QCD phase
diagram at high net baryon density and moderate temperature
by colliding heavy nuclei at an energy range of 4–12 AGeV.
The Muon Chamber (MuCh) detector at CBM is dedicatedly
designed to detect muon pairs originating at different
stages of heavy ion collisions. MuCh consists of absorber
segments and detector layers positioned in between the
absorber pairs to facilitate a momentum dependent track
identification in high particle density environment upto an
interaction rate 10 MHz. Gas Electron Multiplier (GEM)
chambers are used in the first two stations of MuCh. Two
prototype real size GEM detectors called mMuCh setup have
been installed in the mCBM (mini CBM) experiment using beams
from SIS18 at GSI, Germany. This mCBM is a part of FAIR
phase-0 program where a pre-series production of CBM
detector systems are being tested with their triggerless
streaming readout chain before final CBM production. In the
mCBM campaign 2020, data for mMuCh along with other sub
detectors have been collected for the Pb+Au collisions at
Ebeam = 1.06 AGeV upto an intensity of $\(10^{8}\)/spill$
and with different Au target thicknesses. In this work, we
will present the performance of mMuCh chambers in terms of
the linearity of the response of the mMuCh detectors with
beam intensity and its time and spatial correlations with
other sub detectors. Three layers of the time of flight
(TOF) detectors have been used to form the tracks in the
data. After employing a time based event reconstruction and
tracking on the mCBM data we have studied the GEM
performance in terms of the degree of spatial correlations
by constructing residual distributions between reconstructed
GEM hits and projected reconstructed tracks at the GEM
plane. After re-aligning the detectors positions we tried to
estimate GEM detector efficiency and studied its dependence
with GEM HV and velocity $(\(\beta$ $\))$ of traversing
tracks in mCBM. We acknowledge the help extended by our
colleagues at GSI during the data taking},
pnm = {6G12 - FAIR (GSI) (POF4-6G12)},
pid = {G:(DE-HGF)POF4-6G12},
experiment = {EXP:(DE-Ds200)FAIR-Facility},
typ = {PUB:(DE-HGF)3 / PUB:(DE-HGF)16},
doi = {10.1007/978-981-97-0289-3_128},
url = {https://repository.gsi.de/record/361080},
}