Experimental observation of an extremely high electron lifetime with the ICARUS-T600 LAr-TPC

Abstract

The ICARUS T600 detector, the largest liquid Argon Time Projection Chamber (LAr-TPC) realized after many years of RD activities, was installed and successfully operated for 3 years at the INFN Gran Sasso underground Laboratory. One of the most important issues was the need of an extremely low residual electronegative impurity content in the liquid Argon, in order to transport the free electrons created by the ionizing particles with a very small attenuation along the drift path. The solutions adopted for the Argon re-circulation and purification systems have permitted to reach impressive results in terms of Argon purity and a free electron lifetime exceeding 15 ms, corresponding to about 20 parts per trillion of equivalent O2 contamination, a milestone for any future project involving LAr-TPC's and the development of higher detector mass scales.

to be submitted to JINST, LaTeX version

References in corpus (3)

• Experimental search for the LSND anomaly with the ICARUS detector in the CNGS neutrino beam
• Search for anomalies in the νe appearance from a νμ beam
• Precise 3D track reconstruction algorithm for the ICARUS T600 liquid argon time projection chamber detector

Cited by in corpus (20)

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• Operation and performance of the ICARUS-T600 cryogenic plant at Gran Sasso underground Laboratory
• The science and technology of liquid argon detectors
• New read-out electronics for ICARUS-T600 liquid Argon TPC. Description, simulation and tests of the new front-end and ADC system
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• Parameterization of Electron Attachment Rate Constants for Common Impurities in LArTPC Detectors
• Study of space charge in the ICARUS T600 detector
• Operation of a LAr-TPC equipped with a multilayer LEM charge readout
• Search for Inelastic Boosted Dark Matter with the ICARUS Detector at the Gran Sasso Underground National Laboratory
• A 20-Liter Test Stand with Gas Purification for Liquid Argon Research
• Modeling impurity concentrations in liquid argon detectors
• A liquid-phase loop-mode argon purification system