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May 21 – 26, 2017
Beijing International Convention Center
Asia/Shanghai timezone

Simulation and investigation of the gaseous detector module for CEPC TPC

May 25, 2017, 9:36 AM
18m
Room 305C (Beijing International Convention Center)

Room 305C

Beijing International Convention Center

No.8 Beichen Dong Road, Chaoyang District, Beijing P. R. China 100101
oral Gaseous detectors R2-Gaseous detectors(3)

Speaker

Dr Huirong Qi (Institute of High Energy Physics, CAS)

Description

Compared with the International Linear Collider (ILC), the beam structure of the future Circular Electron Positron Collider (CEPC) is very different without the ‘power-pulsing’ mode. In this paper, some simulation and estimation results of the Time Projection Chamber (TPC) as one tracker detector option for CEPC were given. The optimized operation gas (Ar:CF4:C2H6=92:7:1) with the fast velocity, low diffusion and low attachment was simulated used Garfield/Garfield++, and the performance of the selection gas was compared with the T2K (Ar:CF4:iC4H10=95:3:2) working gas. The position resolution of deviation was calculated by the space charge caused the track distortions in the drift chamber at Z pole run in CEPC, and the value was less than 10μm in the inner diameter of TPC detector. To meet the critical physics requirements of the tracker detection at CEPC, the new concept structure gaseous detector module as one option for the tracer detector has been developed and experimental measured. Some performance of the concept detector module was obtained. The energy resolution is better than 20% for 5.9 keV X-rays and it indicated that the continuous suppression ions backflow ratio better than 0.1% can be reached at a gain of about 5000. The preliminary results could be compared with simulation and satisfied with the ions suppression requirements of the TPC detector module.

Primary author

Dr Huirong Qi (Institute of High Energy Physics, CAS)

Co-authors

Presentation materials