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The mu TPC method: improving the position resolution of neutron detectors based on MPGDs
European Spallat Source ESS AB, Sweden; CERN, Switzerland.
European Spallat Source ESS AB, Sweden; CERN, Switzerland.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.
European Spallat Source ESS AB, Sweden; Mid Sweden University, Sweden.
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2015 (English)In: Journal of Instrumentation, ISSN 1748-0221, Vol. 10, no P04004Article in journal (Refereed) Published
Abstract [en]

Due to the He-3 crisis, alternatives to the standard neutron detection techniques are becoming urgent. In addition, the instruments of the European Spallation Source (ESS) require advances in the state of the art of neutron detection. The instruments need detectors with excellent neutron detection efficiency, high rate capabilities and unprecedented spatial resolution. The Macromolecular Crystallography instrument (NMX) requires a position resolution in the order of 200 mu m over a wide angular range of incoming neutrons. Solid converters in combination with Micro Pattern Gaseous Detectors (MPGDs) are proposed to meet the new requirements. Charged particles rising from the neutron capture have usually ranges larger than several millimetres in gas. This is apparently in contrast with the requirements for the position resolution. In this paper, we present an analysis technique, new in the field of neutron detection, based on the Time Projection Chamber (TPC) concept. Using a standard Single-GEM with the cathode coated with (B4C)-B-10, we extract the neutron interaction point with a resolution of better than sigma = 200 mu m.

Place, publisher, year, edition, pages
IOP Publishing: Hybrid Open Access , 2015. Vol. 10, no P04004
Keyword [en]
Particle tracking detectors; Time projection Chambers (TPC); Micropattern gaseous detectors (MSGC, GEM, THGEM, RETHGEM, MHSP, MICROPIC, MICROMEGAS, InGrid, etc); Neutron detectors (cold, thermal, fast neutrons)
National Category
Accelerator Physics and Instrumentation
Identifiers
URN: urn:nbn:se:liu:diva-120472DOI: 10.1088/1748-0221/10/04/P04004ISI: 000357961700049OAI: oai:DiVA.org:liu-120472DiVA: diva2:845542
Available from: 2015-08-12 Created: 2015-08-11 Last updated: 2015-09-01

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Birch, JensHöglund, Carina
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Thin Film PhysicsFaculty of Science & EngineeringDepartment of Physics, Chemistry and Biology
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