Prototype analog front-end for negative-ion gas and dual-phase liquid-Ar TPCs

We report on the recent development of a versatile analog front-end compatible with a negative-ion μ-TPC for a directional dark matter search as well as a dual-phase, next-generation (10 kt) liquid argon TPC to study neutrino oscillations, nucleon decay, and astrophysical neutrinos. Although the ope...

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Bibliographic Details
Published in:Journal of instrumentation 2019-01, Vol.14 (1), p.T01008-T01008, Article T01008
Main Authors: Nakazawa, M., Kishishita, T., Shoji, M., Sakashita, K., Ikeda, T., Ishiura, H., Battat, J.B.R., Nicoloff, C., Tanaka, M.M., Hasegawa, T., Miuchi, K.
Format: Article
Language:English
Subjects:
Argon
CMOS
Dark matter
Dynamic range
Low pressure
Neutrinos
Nucleons
Prototypes
Room temperature
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Summary:We report on the recent development of a versatile analog front-end compatible with a negative-ion μ-TPC for a directional dark matter search as well as a dual-phase, next-generation (10 kt) liquid argon TPC to study neutrino oscillations, nucleon decay, and astrophysical neutrinos. Although the operating conditions for negative-ion and liquid argon TPCs are quite different (room temperature vs. ∼88 K operation, respectively), the readout electronics requirements are similar. Both require a wide-dynamic range up to 1600 fC, and less than 2000–5000 e− noise for a typical signal of 80 fC with a detector capacitance of Cdet≈300 pF. In order to fulfill such challenging requirements, a prototype ASIC was newly designed using 180-nm CMOS technology. Here, we report on the performance of this ASIC, including measurements of shaping time, dynamic range, and equivalent noise charge (ENC). We also demonstrate the first operation of this ASIC on a low-pressure negative-ion μ-TPC.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/14/01/T01008