Microstrip Gas Chambers on glass and ceramic substrates
We 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. Our 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 percents. Long-term tests of gain stability and rate capability are yet to be pursued.
- Research Organization:
- Lawrence Berkeley Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 10114942
- Report Number(s):
- LBL-33998; CONF-9311114-9; ON: DE94005207
- Resource Relation:
- Conference: Institute of Electrical and Electronic Engineers (IEEE) medical imaging conference,San Francisco, CA (United States),4-6 Nov 1993; Other Information: PBD: Nov 1993
- Country of Publication:
- United States
- Language:
- English
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