Lightfoot, P.K., Barker, G.J., Mavrokoridis, K. et al. (2 more authors) (2009) Optical readout tracking detector concept using secondary scintillation from liquid argon generated by a thick gas electron multiplier. Journal of Instrumentation, 4. ARTN P04002. ISSN 1748-0221
Abstract
Reading out the charge from a very large liquid argon detector, such as proposed for next generation proton decay and long baseline neutrino detectors, represents a significant challenge. Current proposals suggest using wires in the liquid or a two-phase approach that can provide some gain via amplification in the gas phase. We present here work on an alternative new approach in which the charge is read out by optical means following generation of electroluminescence, such as in a THGEM (Thick Gas Electron Multiplier) mounted within the liquid. This has the potential for significant advantages by providing both simpler readout electronics and significant charge gain, without the need for the complexities of dual phase operation. Tests with a silicon photomultiplier (SiPM) mounted above a THGEM, all submerged in liquid argon, have allowed first demonstration of the technique. Sensitivity to 5.9 keV 55Fe gamma events was observed with an estimated gain of 150 photoelectrons per drifted electron. We review the concepts and results.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2009 IOP Publishing. This is an author produced version of a paper subsequently published in Journal of Instrumentation. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Scintillators; scintillation and light emission processes (solid, gas and liquid scintillators); Cryogenic detectors; Liquid detectors; Calorimeters |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Science (Sheffield) > Department of Physics and Astronomy (Sheffield) |
Funding Information: | Funder Grant number SCIENCE AND TECHNOLOGY FACILITIES COUNCIL ST/H000917/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 20 Jan 2017 16:06 |
Last Modified: | 20 Jan 2017 16:06 |
Published Version: | https://dx.doi.org/10.1088/1748-0221/4/04/P04002 |
Status: | Published |
Publisher: | IOP Publishing |
Refereed: | Yes |
Identification Number: | 10.1088/1748-0221/4/04/P04002 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:106522 |