Production and tests of Hybrid Photon Detectors for the LHCb RICH detectors
نویسندگان
چکیده
منابع مشابه
Pixel hybrid photon detectors for the LHCb-RICH system
The baseline option for the photon detectors of the LHCb Ring Imaging Cherenkov (RICH) subsystem is the pixel hybrid photon detector (HPD) [1]. Commercially available pixel HPDs do not fully meet the LHCb RICH requirements, namely wide area coverage over 2.6 m, single photon sensitivity in the wavelength range of 200600 nm, channel size of 2.5 x 2.5 mm and a speed compatible with the LHC bunchc...
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The LHCb experiment will use two RICH detectors to provide particle identification. The Hybrid Photon Detectors (HPDs) adopted for these detectors are required to operate in the fringe field of the 4Tm LHCb dipole magnet. In fields in excess of 15G, photoelectrons are lost from the active area of an HPD. Shielding the HPDs from the fringe field is therefore essential for the efficient operation...
متن کاملThe 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...
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The calorimeter and muon systems are essential components to provide a trigger for the LHCb experiment. The calorimeter system comprises a scintillating pad detector and pre-shower, followed by electromagnetic and hadronic calorimeters. The calorimeter system allows photons, electrons and hadrons to be identified, and their energy to bemeasured. Themuon system consists of five measuring station...
متن کاملNew Developments in Hybrid Photon Detectors
New developments in HPD design are presented, triggered by applications in high energy physics and astrophysics. The presented HPD designs are based on three innovations. (i) In order to achieve the highest possible surface coverage in a RICH detector, we introduced a photoelectron focussing method which is efficient to the periphery of the photocathode. (ii) To prevent positive ion feedback in...
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ژورنال
عنوان ژورنال: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
سال: 2008
ISSN: 0168-9002
DOI: 10.1016/j.nima.2008.07.084