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Title: Noise Characterization and Filtering in the MicroBooNE Liquid Argon TPC

Journal Article · · Journal of Instrumentation
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The low-noise operation of readout electronics in a liquid argon time projection chamber (LArTPC) is critical to properly extract the distribution of ionization charge deposited on the wire planes of the TPC, especially for the induction planes. This paper describes the characteristics and mitigation of the observed noise in the MicroBooNE detector. The MicroBooNE's single-phase LArTPC comprises two induction planes and one collection sense wire plane with a total of 8256 wires. Current induced on each TPC wire is amplified and shaped by custom low-power, low-noise ASICs immersed in the liquid argon. The digitization of the signal waveform occurs outside the cryostat. Using data from the first year of MicroBooNE operations, several excess noise sources in the TPC were identified and mitigated. The residual equivalent noise charge (ENC) after noise filtering varies with wire length and is found to be below 400 electrons for the longest wires (4.7 m). The response is consistent with the cold electronics design expectations and is found to be stable with time and uniform over the functioning channels. This noise level is significantly lower than previous experiments utilizing warm front-end electronics.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States); SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Pacific Northwest National Laboratory (PNNL), Richland, WA (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC), High Energy Physics (HEP)
Contributing Organization:
MicroBooNE Collaboration; MicroBooNE
Grant/Contract Number:
SC0012704; AC02-07CH11359
OSTI ID:
1376174
Alternate ID(s):
OSTI ID: 1367903
Report Number(s):
BNL-114152-2017-JA; MICROBOONE-NOTE-1016-PUB; FERMILAB-PUB-17-163-ND; arXiv:1705.07341; R&D Project: PO-022; KA2201020
Journal Information:
Journal of Instrumentation, Vol. 12, Issue 08; ISSN 1748-0221
Publisher:
Institute of Physics (IOP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 33 works
Citation information provided by
Web of Science

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Cited By (7)

Ionization electron signal processing in single phase LArTPCs. Part II. Data/simulation comparison and performance in MicroBooNE journal July 2018
Ionization electron signal processing in single phase LArTPCs. Part I. Algorithm Description and quantitative evaluation with MicroBooNE simulation journal July 2018
First measurement of ν μ charged-current π 0 production on argon with the MicroBooNE detector journal May 2019
First measurement of νμ charged-current π⁰ production on argon with the MicroBooNE detector text January 2019
Ionization Electron Signal Processing in Single Phase LArTPCs II. Data/Simulation Comparison and Performance in MicroBooNE text January 2018
Ionization Electron Signal Processing in Single Phase LArTPCs I. Algorithm Description and Quantitative Evaluation with MicroBooNE Simulation text January 2018
First Measurement of Inclusive Muon Neutrino Charged Current Differential Cross Sections on Argon at E ν 0.8 GeV with the MicroBooNE Detector journal September 2019