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HK: Fachverband Physik der Hadronen und Kerne

HK 48: Instrumentation X

HK 48.4: Vortrag

Donnerstag, 2. April 2020, 15:15–15:30, J-HS C

mini-TOF performance during mini-CBM beam time at SIS18 — •Qiunan Zhang for the CBM collaboration — Tsinghua University Beijing

The Compressed Baryonic Matter (CBM) experiment is one of the main pillars at FAIR. It aims to study the QCD phase diagram at high baryon densities with unprecedented interaction rate up to 10 MHz. This requires new free-streaming data acquisition methods, new data analysis concepts and radiation hard and high-rate capable detectors. The CBM Time of Flight wall (CBM-TOF) covers the task of charged particle identification. Muitl-gap Resistive Plate Chambers (MRPCs) with different rate capabilities will be used at their corresponding regions. To reduce the commissioning time for CBM, a CBM full system test-setup called mini-CBM (mCBM) has been installed and tested with various beams at GSI SIS18 facility. The high-rate MRPC prototypes developed at Tsinghua University, called MRPC3a, were selected to be implemented in mTOF modules for mCBM. Additional thin float glass MRPCs from USTC, foreseen for the low rate region, were also tested in mCBM experiment. Performance results from these prototypes regarding efficiency, time and spacial resolution and cluster size analyzed by the so called tracking method will be discussed during this talk. The project is partially founded by BMBF 05P15VHFC1.