A compensated multi-gap RPC with 2 m strips for the LEPS2 experiment
Abstract
We have developed multi-gap resistive plate chambers (MRPCs) with 2 . 5 × 200 cm 2 readout strips for the time-of-flight (TOF) detector system of the LEPS2 experiment at SPring-8. These chambers consist of two float glass stacks with 5 gas gaps each, in a mirrored configuration. A time resolution of σ ≃ 80 ps was achieved for any position within a strip (at above 99% detection efficiency), improved to 60 ps after correcting for a relatively small time-charge slewing effect. This latter fact seems to stem from the suppression of modal dispersion, achieved through convenient design choices.
- Publication:
-
Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- May 2019
- DOI:
- arXiv:
- arXiv:1809.06571
- Bibcode:
- 2019NIMPA.925..188W
- Keywords:
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- MRPC;
- Time-of-flight;
- PID;
- Time resolution;
- Efficiency;
- Physics - Instrumentation and Detectors
- E-Print:
- doi:10.1016/j.nima.2019.02.014