Design and operation of LongBo: a 2 m long drift liquid argon TPC

Abstract

In this paper, we report on the design and operation of the LongBo time projection chamber in the Liquid Argon Purity Demonstrator cryostat. This chamber features a 2 m long drift distance. We measure the electron drift lifetime in the liquid argon using cosmic ray muons and the lifetime is at least 14 ms at 95\% confidence level. LongBo is equipped with preamplifiers mounted on the detector in the liquid argon. Of the 144 channels, 128 channels were readout by preamplifiers made with discrete circuitry and 16 channels were readout by ASIC preamplifiers. For the discrete channels, we measure a signal-to-noise (S/N) ratio of 30 at a drift field of 350 V/cm. The measured S/N ratio for the ASIC channels was 1.4 times larger than that measured for the discrete channels.

19 pages, 17 figures

References in corpus (6)

• The ArgoNeuT Detector in the NuMI Low-Energy beam line at Fermilab
• The Liquid Argon Purity Demonstrator
• Design and operation of ARGONTUBE: a 5 m long drift liquid argon TPC
• Experimental observation of an extremely high electron lifetime with the ICARUS-T600 LAr-TPC
• Experimental study of electric breakdowns in liquid argon at centimeter scale
• Liquid Argon Dielectric Breakdown Studies with the MicroBooNE Purification System

Cited by in corpus (6)

• First results on ProtoDUNE-SP liquid argon time projection chamber performance from a beam test at the CERN Neutrino Platform
• Calibration of the charge and energy loss per unit length of the MicroBooNE liquid argon time projection chamber using muons and protons
• Liquid Argon TPC Signal Formation, Signal Processing and Hit Reconstruction
• Design and performance of a 35-ton liquid argon time projection chamber as a prototype for future very large detectors
• Spatial and Temporal Evaluations of the Liquid Argon Purity in ProtoDUNE-SP
• Calibration of calorimetric measurement in a liquid argon time projection chamber