The RICH counter in the CERN hyperon beam experiment Article

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Overview

abstract

• The hyperon beam experiment WA89 at the CERN-SPS uses a ring imaging Cherenkov counter (RICH) for identification of secondaries from ∑- N reactions. Cherenkov photons are generated in a 5 m long radiator volume filled with nitrogen at atmospheric pressure and detected in drift chambers. The drift chambers cover an active surface of 1.6 × 0.75 m2, with a maximum drift path of 41 cm. Photoelectrons are counted on 1280 wires with a pitch of 2.54 mm, equipped with multihit TDCs. The counting gas is ethane saturated with TMAE at 30°C. The counter was operated in two beam periods in 1990 and 1991. The spatial resolution of the chambers is better than 2 mm and under normal running conditions 14 photoelectrons per ring have been detected on average. © 1992.

authors

• Beusch W.
• Engelfried Jatzkowski Jurgen
• Gerassimov S.G.
• Heintze J.
• Kluth S.
• Lennert P.
• Ljungfelt S.
• Martens K.
• Michaels R.
• Müller U.
• Rieseberg H.
• Siebert H.-W.
• Wälder G.

publication date

• 1992-01-01

funding provided via

• Bundesministerium für Bildung, Wissenschaft, Forschung und Technologie, BMBWF  Grant

published in

• Nuclear Inst. and Methods in Physics Research, A  Journal

Research

keywords

• Electrons; Ethane; Nitrogen; Photons; CERN SPS hyperon beam experiment WA89; Cherenkov photons; Drift chambers; Photoelectrons; Ring imaging Cherenkov counters (RICH); Cerenkov counters

Identity

Digital Object Identifier (DOI)

• 10.1016/0168-9002(92)90317-W

Additional Document Info

start page

• 373

end page

• 379

volume

• 323

issue

• 1-2