Microstrip gas chambers on glass and ceramic substrates

Conference · Mon Aug 01 00:00:00 EDT 1994 · IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6816039

Gong, W G; Wieman, H; Harris, J W; Mitchell, J T; Hong, W S; Perez-Mendez, V ^[1]

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1. Lawrence Berkeley Lab., CA (United States)

The Microstrip Gas Chamber is a miniaturized type of the Multi-Wire Proportional Chamber with the wires being replaced by thin-film strips and one cathode drift plane being replaced by an insulating substrate to support the strips. The authors report developments of Microstrip Gas Chambers (MSGC) fabricated on glass and ceramic substrates with various resistivities. Low resistivity of the substrate is found to be critical for achieving stable operation of microstrip gas chambers. The microstrip pattern consists of 10 [mu]m wide anodes and 90/[mu]m wide cathodes with a 200 [mu]m anode-to-anode pitch. High-quality microstrips are fabricated using the dry etch after UV-photolithography. The chambers are tested in an Ar(90)-CH[sub 4](10) gas mixture at atmospheric pressure with a 100 [mu]Ci [sup 55]Fe source. An energy resolution (FWHM) of 15% has been achieved for 6 keV soft X-rays. At a rate of 5 [times] 10[sup 4] photons/sec/mm[sup 2], gas gains are stable within a few percent.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6816039
• Report Number(s): CONF-931051-; CODEN: IETNAE; TRN: 94-023061
• Journal Information: IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States), Vol. 41:4Pt1; Conference: NSS-MIC '93: nuclear science symposium and medical imaging conference, San Francisco, CA (United States), 30 Oct - 6 Nov 1993; ISSN 0018-9499
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
MULTIWIRE PROPORTIONAL CHAMBERS
FABRICATION
PERFORMANCE
ARGON
IRON 55
METHANE
OPERATION
PERFORMANCE TESTING
SUBSTRATES
X RADIATION
ALKANES
BETA DECAY RADIOISOTOPES
ELECTROMAGNETIC RADIATION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
EVEN-ODD NUCLEI
FLUIDS
GASES
HYDROCARBONS
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
IRON ISOTOPES
ISOTOPES
MEASURING INSTRUMENTS
NONMETALS
NUCLEI
ORGANIC COMPOUNDS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
RADIATIONS
RADIOISOTOPES
RARE GASES
TESTING
YEARS LIVING RADIOISOTOPES
440101* - Radiation Instrumentation- General Detectors or Monitors & Radiometric Instruments