9-15 June 2018
Woodlands Conference Center
America/New_York timezone
**** See you at Real Time 2020 ****

Testing of Front-End Readout Prototype ASICs Designed for WCDA in LHAASO

14 Jun 2018, 17:05
20m
Woodlands Conference Center

Woodlands Conference Center

159 Visitor Center Dr, Williamsburg, VA 23185
Oral presentation Front End Fast Detectors 2

Speaker

Mr Jiaming Lu (University of Science and Technology of China)

Description

The Large High Altitude Air Shower Observatory (LHAASO) is a multipurpose complex which aims at discovery of cosmic ray origin. In LHAASO, the Water Cherenkov Detector Array (WCDA) is one of the key detectors, which consists of more than 3000 Photomultiplier Tubes (PMTs). Both high precision time and charge measurement are required over a large dynamic range from 1 Photon Electron (P.E.) to 4000 P.E. To simplify the circuits and improve the system reliability, front-end ASICs (Application Specific Integrated Circuits) are specially designed and tested. As for time measurement, the signal is fed to the discrimination circuits inside the ASIC and then digitized by the following FPGA-based Time-to-Digital Converter (TDC). As for charge measurement, we designed the amplification & shaping circuits integrated within one ASIC and an Analog-to-Digital Converter (ADC) integrated in another ASIC. Tests were conducted to evaluate the performance of these prototype ASICs, and the results indicate that the time resolution is better than 250 ps RMS and the charge resolution is better than 10%@1 P.E. and 1% @ 4000 P.E.

Country China
Speaker Shengzhi Zhou
Description ASIC
Minioral Yes
Institute USTC

Primary authors

Mr Shengzhi Zhou (University of Science and Technology of China) Mr Jiaming Lu (University of Science and Technology of China)

Co-authors

Prof. Lei Zhao (University of Science and Technology of China) Mr Yuxiang Guo (University of Science and Technology of China) Mr Ruoshi Dong (University of Science and Technology of China) Mr Boyu Cheng (University of Science and Technology of China) Mr Jiajun Qin (University of Science and Technology of China) Mr Sifan Qian (University of Science and Technology of China) Prof. Shubin Liu (University of Science and Technology of China) Prof. Qi An (University of Science and Technology of China)

Presentation Materials