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A prototype low-background multiwire proportional chamber

Ahmed, Z. and Bowles, M. A. and Bunker, R. and Golwala, S. R. and Grant, D. R. and Kos, M. and Nelson, R. H. and Rider, A. and Schnee, R. W. and Sotolongo, D. and Wang, B. and Zahn, A. (2014) A prototype low-background multiwire proportional chamber. Journal of Instrumentation, 9 (1). Art. No. P01009. ISSN 1748-0221.

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A prototype multiwire proportional chamber (MWPC) was developed to demonstrate the feasibility of constructing a radiopure time projection chamber with MWPC track readout to assay materials for alpha- and beta-emitting surface contaminants for future rare-event-search experiments as well as other scientific fields. The design features and assembly techniques described here are motivated by the position and energy resolution required to reconstruct alpha and beta tracks while efficiently rejecting backgrounds. Results from a test setup using an ^(55)Fe x-ray source indicate excellent operational stability and a near-ideal energy resolution of 15.8% FWHM at 5.89 keV and a gas gain of ~10^4.

Item Type:Article
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URLURL TypeDescription Paper
Golwala, S. R.0000-0002-1098-7174
Additional Information:© 2014 IOP Publishing Ltd and Sissa Medialab srl. Received: July 23, 2013; Revised: November 27, 2013; Accepted: December 16, 2013; Published: January 15, 2014. This work was supported in part by the National Science Foundation (Grants No. PHY-0834453 and PHY-0855525), the Department of Energy HEP division, and the University of Alberta Department of Physics and Faculty of Science. The authors gratefully acknowledge the technical contributions of L. Buda, J. Hanson, G. Lachat, and P. Zimmerman, and the quality-control testing of J. Roberts and M. Mintskovsky.
Funding AgencyGrant Number
Department of Energy (DOE)UNSPECIFIED
University of AlbertaUNSPECIFIED
Subject Keywords:Wire chambers (MWPC, Thin-gap chambers, drift chambers, drift tubes, proportional chambers etc); Particle tracking detectors (Gaseous detectors); Time projection chambers; Electron multipliers (gas)
Issue or Number:1
Classification Code:PACS: 29.40.Cs, 29.50.+v, 29.40.Gx, 07.05.Hd
Record Number:CaltechAUTHORS:20130805-073648808
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Official Citation:A prototype low-background multiwire proportional chamber Z Ahmed et al 2014 JINST 9 P01009
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:39749
Deposited By: Tony Diaz
Deposited On:05 Aug 2013 23:29
Last Modified:03 Oct 2019 05:10

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