Design and Operation of LongBo: a 2 m Long Drift Liquid Argon TPC
Apr 1, 2015
16 pages
Published in:
- JINST 10 (2015) 07, P07015
- Published: Jul 23, 2015
e-Print:
- 1504.00398 [physics.ins-det]
Report number:
- FERMILAB-PUB-15-104-ND
Citations per year
Abstract: (IOP)
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.Note:
- 19 pages, 17 figures
- Time projection Chambers (TPC)
- Noble liquid detectors (scintillation, ionization, double-phase)
- time projection chamber: liquid argon
- time projection chamber: design
- muon: cosmic radiation
- integrated circuit
- admixture
- electronics: readout
- noise
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Figures(18)
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- [3]
- [4]
- [5]
- [6]
- [7]
- [8]
- [9]
- [10]
- [11]
- [12]
- [13]
- [14]
- [15]
- [16]
- [17]
- [18]