The back-streaming white neutrons (Back-n) at China Spallation Neutron Source (CSNS), which has excellent energy spectrum and good time resolution, provides superior conditions for neutron induced light charged particle tracking experiment. To track light charged particles, CSNS is working on a project named Multi-purpose Time Projection Chambers (MTPC) and completed a 1519-channel prototype. A multi-channel readout system composed of switched capacitor arrays (SCA) waveform sampling electronics based on ASIC was designed to meet the requirements of the prototype MTPC. This paper presents the structure of this SCA ASIC-based multi-channel readout system and the results of the beam test with MTPC at CSNS. Time of Flight spectrum of neutron beam and 3D-track of neutron induced light charged particles were successfully reconstructed. These test results prove the feasibility of large-scale MTPC, and propose an improvement direction for the next generation of electronic system.
|TIPP2020 abstract resubmission?||No, this is an entirely new submission.|
|Funding information||This work was supported in part by the National Natural Science Foundation of China under Grant 11922510, in part by "the Fundamental Research Funds for the Central Universities" under Grant WK236000|