[1] Univ Paris 11, CNRS, IN2P3, OMEGA,LAL,Lab Accelerateur Lineaire, Batiment 200, F-91898 Orsay, France
[2] RIKEN, Computat Astrophys Lab, Wako, Saitama 3510198, Japan
[3] JAXA, Inst Space & Astronaut Sci, Sagamihara, Kanagawa 2525210, Japan
[4] Univ Okamoto, Dept Phys, Kobe, Hyogo 6588501, Japan
来源:
PROCEEDINGS OF THE 2ND INTERNATIONAL CONFERENCE ON TECHNOLOGY AND INSTRUMENTATION IN PARTICLE PHYSICS (TIPP 2011)
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2012年
/
37卷
关键词:
ASIC;
Front-End Electronics;
Rad-Hard;
D O I:
10.1016/j.phpro.2012.02.482
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
The SPACIROC ASIC is designed for the JEM-EUSO fluorescence imaging telescope onboard of the International Space Station. Its goal is the detection of Giant Air Shower above a few 10 boolean AND 19 eV, developing at a distance of about 400 km, downward in the troposphere. From such distance, most of the time, the number of the photons expected in the pixels is very weak, ranging from a few units to a few tens. For such running conditions, we propose a low-power, rad-hard ASIC which is intended for reading out a 64-channel Multi-Anode Photomultiplier. The two main features of this ASIC are the photon counting mode for each input and the charge-to-time (Q-to-T) conversions for the multiplexed channels. In the photon counting mode, the 100% triggering efficiency is achieved for 50 fC input charges. For the Q-to-T converter, the ASIC requires a minimum input of 2 pC. The working conditions of JEM-EUSO require the ASIC to have a low power dissipation which is around 1mW/channel. The design of SPACIROC and the test results are presented in this paper. SPACIROC is a result of the collaboration between OMEGA/LAL-Orsay, France, RIKEN, ISAS/JAXA and Konan University, Japan on behalf of the JEM-EUSO consortium. (C) 2012 Published by Elsevier B.V. Selection and/or peer review under responsibility of the organizing committee for TIPP 11.