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Title	20 gas gaps Multigap Resistive Plate Chamber: Improved rate capability with excellent time resolution
Related title	20 gas gaps Multigap Resistive Plate Chamber: Improved rate capability with excellent time resolution
Author(s)	Liu, Z (CERN ; World Lab., Geneva) ; Carnesecchi, F (INFN, Bologna ; U. Bologna, DIFA ; Enrico Fermi Ctr., Rome) ; Rodriguez, O M (World Lab., Geneva) ; Williams, M C S (CERN ; INFN, Bologna ; U. Bologna, DIFA ; Gangneung-Wonju Natl. U.) ; Zichichi, A (CERN ; INFN, Bologna ; U. Bologna, DIFA ; Enrico Fermi Ctr., Rome) ; Zuyeuski, R (World Lab., Geneva ; Enrico Fermi Ctr., Rome)
Publication	2018
Number of pages	5
In:	Nucl. Instrum. Methods Phys. Res., A 908 (2018) 383-387
DOI	10.1016/j.nima.2018.08.096
Subject category	Detectors and Experimental Techniques
Accelerator/Facility, Experiment	CERN PS CERN PS
Test beam	T10
Abstract	A 20 gas gaps multigap resistive plate chamber (MRPC) was built with thin (0.28 mm) glass sheets and 0.16 mm gas gap size. This chamber reaches 97% efficiency at 18.4 kV and a time resolution of 32 ps (sigma) at an instantaneous particle flux around 2.5 kHz/cm$^2$. Compared to a 6 gaps MRPC with 0.22 mm gas gap, this 20-gap MRPC shows a higher rate capability and much better time resolution. The efficiencies of the 20-gap MRPC reach 95%, 93% and 88% at instantaneous fluxes of 10 kHz/cm$^2$, 14.5 kHz/cm$^2$ and 20 kHz/cm$^2$, respectively. The efficiencies of the 6-gap MRPC at the same flux are 90%, 85% and 77%. The time resolution of 20-gap MRPC degrades with the increase of particle flux. However, a time resolution of 39 ps was obtained at an instantaneous flux of 10 kHz/cm$^2$.
Copyright/License	publication: © 2018 The Authors (License: CC-BY-4.0)

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