Abstract
The ICARUS T600 liquid argon (LAr) time projection chamber (TPC) underwent a major overhaul at CERN in 2016–2017 to prepare for the operation at FNAL in the Short Baseline Neutrino (SBN) program. This included a major upgrade of the photo-multiplier system and of the TPC wire read-out electronics. The full TPC wire read-out electronics together with the new wire biasing and interconnection scheme are described. The design of a new signal feed-through flange is also a fundamental piece of this overhaul whose major feature is the integration of all electronics components onto the signal flange. Initial functionality tests of the full TPC electronics chain installed in the T600 detector at FNAL are also described.
Highlights
Initial design for LNGS runThe electronics initially equipping the T600 during the LNGS operation was designed to allow for continuous read-out, digitization and independent waveform recording of signals from each wire of the time projection chamber (TPC) for the whole drift time (∼ 1 ms) [5]
Overhaul and installation of the ICARUS-T600 liquid argon time projection chamber (TPC) electronics for the FNAL Short Baseline Neutrino program
The custom designed low-noise ICARUS front-end amplifier and multiplexed ADC system used in the LNGS run performed efficiently with a signal to noise (S/N) ratio ∼ 10, allowing collection of several thousands of neutrino and cosmic events with unprecedented imaging quality
Summary
The electronics initially equipping the T600 during the LNGS operation was designed to allow for continuous read-out, digitization and independent waveform recording of signals from each wire of the TPC for the whole drift time (∼ 1 ms) [5]. The Analogue Board hosted the front-end amplifiers, performed 16:1 channel multiplexing and 10-bit ADC digitization at 400 ns sampling time per channel. The digital crate was based on a VME standard while the analogue crate had a proprietary design relying on VME mechanics with a custom backplane, that allowed inserting the 32-channel analogue boards from the front and the corresponding DBB from the back. The custom designed low-noise ICARUS front-end amplifier and multiplexed ADC system used in the LNGS run performed efficiently with a signal to noise (S/N) ratio ∼ 10, allowing collection of several thousands of neutrino and cosmic events with unprecedented imaging quality. The whole system was engineered and built by CAEN company (Viareggio, Italy) according to the requirements of the experiment and operated for the first time in 2001 in the INFN Pavia laboratory
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