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Recent results on prototype aerogel threshold counters for particle identification in the region 0.5 -- 4.3 GeV/c for the BaBar experiment
Lafaye R.
Dans Nuclear Physics B Proceedings Supplements - 6th Topical Seminar On Experimental Apparatus For Particle Physics And Astrophysics, San Miniato Al Todesco : Italie - http://hal.in2p3.fr/in2p3-00024246
Physique/Physique/Instrumentations et Détecteurs
Recent results on prototype aerogel threshold counters for particle identification in the region 0.5 — 4.3 GeV/c for the BaBar experiment
R. Lafaye1
1 :  LAPP - Laboratoire d'Annecy le Vieux de Physique des Particules
http://wwwlapp.in2p3.fr/
CNRS : UMR5814 – IN2P3 – Université de Savoie
9 Chemin de Bellevue - BP 110 - 74941 Annecy-le-Vieux CEDEX - France
France
The main goal of the BaBar experiment is to study CP violation. In order to achieve this program we need a good $\pi$/K separation up to 4.3 GeV. To increase the detector capabilities we proposed to extend the particle identification in the forward region. With the development of new low density silica aerogel and powerful photodetectors able to work inside strong magnetic fields we have chosen an aerogel threshold counter, with two different refractive indices. Two designs readout by two different photo-detectors have been tested.
BABAR

Communications avec actes
1997
Nuclear Physics B Proceedings Supplements
54B
F.L. Navarria, P.G. Pelfer
381-386

6th Topical Seminar On Experimental Apparatus For Particle Physics And Astrophysics
San Miniato Al Todesco
Italie
20/05/1996
24/05/1996