MSGC Chamber Micro-Strip Gas Counter What is MSGC ? MSGC : a - PowerPoint PPT Presentation

MSGC Chamber Micro-Strip Gas Counter

What is MSGC ?

MSGC : a fragile structure MSGC DISCHARGE PROBLEMS: FULL BREAKDOWN MICRODISCHARGES

MSGC at ILL ILL Grenoble Microstrip Detectors Diffraction Group � The wires are replaced by a printed circuit on a glass substrate � A high electric field is produced around the thin anodes. � The glass substrate is electrically conducting to remove charge build-up Oed et al. � PSD for 1600 element microstrip detector D20 at ILL Grenoble (Fast medium-high resolution machine) Pierre Convert et al. A. Hewat, China Nov/Dec 2000

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MSGC High pressure 5 - 10 atm Lower gas gain > 1 0 - 100 Sealed chamber long-term stability Long proton range stopping gas CF 4 , CO 2 ‚ ··· 2D detection Multi-channel read out feedthrough, electronics, ASIC, ···

Development of M-MSGC

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2D M-MSGC ∆ x ~ 0.6 mm

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MS-Tube™

MS-Tube™

MS-Tube™ plate

MS-Tube™

MPGC - Micro Pixel Gas Chamber H. Tanimori et al. U. of Kyoto

MPGC Development at JAERI pixel 250µm spacing 400µm