The HERMES dual-radiator ring imaging Cherenkov detector

N. Akopov, E. C. Aschenauer, K. Bailey, S. Bernreuther, N. Bianchi, G. P. Capitani, P. Carter, E. Cisbani, R. De Leo, E. De Sanctis, D. De Schepper, V. Djordjadze, B. W. Filippone, S. Frullani, F. Garibaldi, J. O. Hansen, B. Hommez, M. Iodice, H. E. Jackson, P. JungR. Kaiser, J. Kanesaka, R. Kowalczyk, L. Lagamba, A. Maas, V. Muccifora, E. Nappi, K. Negodaeva, W. D. Nowak, T. O'Connor, T. G. O'Neill, D. H. Potterveld, D. Ryckbosch, Y. Sakemi, F. Sato, A. Schwind, T. A. Shibata, K. Suetsugu, E. Thomas, M. Tytgat, G. M. Urciuoli, K. Van de Kerckhove, R. Van de Vyver, S. Yoneyama, H. Zohrabian, L. F. Zhang

Research output: Contribution to journalArticlepeer-review

120 Citations (Scopus)


The construction and use of a dual radiator Ring Imaging Cherenkov (RICH) detector is described. This instrument was developed for the HERMES experiment at DESY which emphasises measurements of semi-inclusive deep-inelastic scattering. It provides particle identification for pions, kaons, and protons in the momentum range from 2 to 15 GeV, which is essential to these studies. The instrument uses two radiators, C4F10, a heavy fluorocarbon gas, and a wall of silica aerogel tiles. The use of aerogel in a RICH detector has only recently become possible with the development of clear, large, homogeneous and hydrophobic aerogel. A lightweight mirror was constructed using a newly perfected technique to make resin-coated carbon-fiber surfaces of optical quality. The photon detector consists of 1934 photomultiplier tubes (PMT) for each detector half, held in a soft steel matrix to provide shielding against the residual field of the main spectrometer magnet.

Original languageEnglish
Pages (from-to)511-530
Number of pages20
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Issue number2-3
Publication statusPublished - 2002 Mar 1

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


Dive into the research topics of 'The HERMES dual-radiator ring imaging Cherenkov detector'. Together they form a unique fingerprint.

Cite this