Speaker
Mr
Salleh Ahmad
(OMEGA/LAL/IN2P3/Université Paris Sud 11,France)
Description
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 10^19 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 50fC input charges. For the Q-to-T converter, the ASIC requires a minimum input of 2pC. 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.
Author
Mr
Salleh Ahmad
(OMEGA/LAL/IN2P3/Université Paris Sud 11,France)
Co-authors
Dr
Christophe de La Taille
(OMEGA/LAL/IN2P3/Université Paris Sud 11,France)
Mr
Frederic Dulucq
(OMEGA/LAL/IN2P3/Université Paris Sud 11,France)
Dr
Fumiyoshi Kajino
(RIKEN,Japan)
Dr
Gisele Martin-Chassard
(OMEGA/LAL/IN2P3/Université Paris Sud 11,France)
Dr
Hirokazu Ikeda
(ISAS/JAXA,Japan)
Dr
Hiroko Miyamoto
(RIKEN,Japan)
Dr
Pierre Barrillon
(OMEGA/LAL/IN2P3/Université Paris Sud 11,France)
Mrs
Sylvie Blin-Bondil
(OMEGA/LAL/IN2P3/Université Paris Sud 11,France)
Dr
Sylvie Dagoret-Campagne
(OMEGA/LAL/IN2P3/Université Paris Sud 11,France)
Dr
Yoshiya Kawasaki
(RIKEN,Japan)
