RT Journal Article
T1 Development of high-rate MRPCs for high resolution time-of-flight systems
A1 Wang, Jingbo
A1 González Díaz, Diego
A1 Wüstenfeld, Jörn
K1 MRPC
K1 TOF
K1 CBM
K1 High rate
K1 Low-resistive glass
K1 Rate capability
AB We show how the high charged-particle flux (1–20 kHz/cm2 ) expected over the 150 m2 large time-offlight wall of the future Compressed Baryonic Matter experiment (CBM) at FAIR can be realistically handled with Multi-gap Resistive Plate Chambers (MRPCs). This crucial 100-fold increase of the chamber rate capability, as compared to that of standard MRPCs presently employed in experiments resorting to sub-100 ps timing, has been achieved thanks to the development of a new type of lowresistive doped glass. Following the encouraging results previously obtained with small counters, two types of modules (active area: 150 cm2) have been built at Tsinghua University with the newmaterial. The measurements conveyed in this work, obtained with a quasi- minimum ionizing electron beam (gbZ3), prove their suitability as the building blocks of the present hadron-identification concept of the CBM experiment. Namely, they provide a time resolution better than 80 ps and an efficiency above 90% at a particle flux well in excess of 20 kHz/cm2 (up to 35–60 kHz/cm2 ), being at the core of a modular concept that is easily scalable. Recent measurements of the electrical and mechanical properties of this new material, together with its long-term behavior, are shortly summarized.
PB Elsevier
SN 1872-9576
YR 2013
FD 2013-03-06
LK http://hdl.handle.net/10347/32790
UL http://hdl.handle.net/10347/32790
LA eng
NO Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 713, 2013, Pages 40-51
DS Minerva
RD 25 abr 2026