The time-projection ring imaging cherenkov (rich) counter - new experimental results

The Ring Imaging Cherenkov detector ( RICH ) of the AMS experiment

The Alpha Magnetic Spectrometer (AMS) experiment to be installed on the International Space Station (ISS) will be equipped with a proximity focusing Ring Imaging Cherenkov (RICH) detector for measuring the electric charge and velocity of the charged cosmic particles. A RICH prototype consisting of 96 photomultiplier units, including a piece of the conical reflector, was built and its performanc...

The Ring Imaging Cherenkov Detectors for LHCb

The success of the LHCb experiment depends heavily on particle identification over the momentum range 2−100 GeV/c. To meet this challenge, LHCb uses a Ring Imaging Cherenkov (RICH) system composed of two detectors with three radiators. RICH1 has both aerogel and gas (C4F10) radiators, while RICH2 has only a gas (CF4) radiator. The design of RICH1 is almost complete, whereas RICH2 has been const...

Ring Identification and Pattern Recognition in Ring Imaging Cherenkov (RICH) Detectors

An algorithm for identifying rings in Ring Imaging Cherenkov (RICH) detectors is described. The algorithm is necessarily Bayesian and makes use of a MetropolisHastings Markov chain Monte Carlo sampler to locate the rings. In particular, the sampler employs a novel proposal function whose form is responsible for significant speed improvements over similar methods. The method is optimised for fin...

LHC-B Ring Imaging Cherenkov Detector

The HERA-B Ring Imaging Čerenkov Counter

I. Ariño, b J. Bastos, c D. Broemmelsiek, d J. Carvalho, c M. Chmeissani, b P. Conde, b J. Davila, g D. Dujmić, a R. Eckmann, a L. Garrido, b D. Gascon, b T. Hamacher, a,1 A. Gorǐsek, i I. Ivaniouchenkov, c M. Ispirian, g S. Karabekian, e,2 M. Kim, a S. Korpar, k,i P. Križan, j,i S. Kupper, i,3 K. Lau, g P. Maas, d J. McGill, a,4 R. Miquel, b,5 N. Murthy, g D. Peralta, b R. Pestotnik, i J. Pyrl...