Microstrip proportional counters for X-ray astronomy

Multiwire Gas Proportional Counters: Decrepit Antiques or ClassicPerformers?

“…Unfortunately, substrate effects have led to considerable difficulties with operational stability, particularly at high flux levels . Various studies to determine the optimum configuration for an MSGC have been performed (Bouclier, Garabatos, Manzin, Sauli, Shekhtman & Temmel, 1993;Beckers, Bouclier, Garabatos, Million, Sauli & Shekhtman, 1994 1993; Allunni, Bouclier, Fara, Garabatos, Manzin, Million, Ropelewski, Sauli, Shekhtman, Daubie, Pingot, Pestov, Busso & Costa, 1993;Budtz-Jorgensen, Bahnsen, Olesen, Madsen, Jonasson, Schnopper & Oed, 1991), but at the time of writing the optimum characteristics for an MSGC are still unclear with somewhat conflicting results being reported by different groups. It seems clear that the substrate must possess sufficient conductivity to prevent charge up and polarization, or gain instabilities will result; however, highconductivity substrates can allow high current flow which causes heating.…”

1 Gas Filled Detectors

“…Therefore ι μ ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι Pulse height distribution of very low energy X-rays obtained with a microstrip gas detector [118] one can expect a much better energy resolution than obtained with wire proportional counters. Therefore ι μ ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι ι Pulse height distribution of very low energy X-rays obtained with a microstrip gas detector [118] one can expect a much better energy resolution than obtained with wire proportional counters.…”

Microstrip gas chambers on glass and ceramic substrates

“…Glass substrates have been widely used for making MSGCs [1,[3][4][5][6][8][9][10][11][12][13].Glass has a very smooth surface and is suitable for photolithography processing. Recent work has shown that electronic conduction in the glass is responsible for achieving stable operation and high rate capability for a MSGC [9][10][11].…”

“…INTRODUCTION The introduction of the Microstrip Gas Chamber (MSGC) by A. Oed [1] has attracted a great deal of attention over the last five years. Many efforts [2][3][4][5][6][7][8][9][10][11][12][13] have demonstrated that this new gas detector has much improved performance over a conventional Multi-Wire Proportional Chamber (MWPC). Its energy resolution, spatial resolution, rate capability radiation resistance, and low cost .…”

“…make it suitable for a wide range of applications, e.g. neutron diffraction in material analysis [3}, X-ray imaging in bot.h astronomy [6] and synchrotron radiation [8], chargedparticle tracking in high-energy particle physics and nuclear physics [7,12,13]. The Microstrip Gas Chamber is a miniaturized type of the Iv1ulti-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.…”