The micromegas detector as a high flux and a high resolution tracker for the COMPASS experiment at CERN

✍ Scribed by D. Thers; Ph. Abbon; J. Ball; R. Durand; J.C. Faivre; A. Giganon; J.M. Le Goff; F. Kunne; F. Lehar; A. Magnon; D. Neyret; S. Platchkov; E. Poisson; Ph. Rebourgeard; J.P. Robert

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 208 KB
• Volume: 654
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/s0375-9474(00)88595-4

✦ Synopsis

We propose to use MICROMEGAS, a new gaseous detector, in the tracking system of the COMPASS experiment. COMPASS will make use of the high energy (200 GeV) and high intensity (10% -1) muon beam at CERN. MICROMEGAS chambers are good candidates for the tracking of leptons and hadrons in areas of ~ 0.2 m 2, with a high resolution (< 100 tim) and a low radiation length. Prototypes of MICROMEGAS were manufactured and tested at Saclay with a source of low energy electrons (9°Sr). The flux capabilities and the detection efficiency were studied using various gas mixtures.