Multianode photomultipliers as position-sensitive detectors of single photons
نویسندگان
چکیده
Tests of 2300 Hamamatsu multianode photomultipliers (1543 pieces of R5900-M16 and 762 pieces of R5900-M4) have been tested on the bench in order to evaluate their performance for use as position-sensitive photon detectors in the ring imaging Cherenkov counter of the HERA-B experiment.1 A weak and stable source of photons has been obtained by Cherenkov radiation of electrons from a 90Sr source in a quartz radiator. From measurements of the count rate versus high voltage, optimal high-voltage values have been obtained as well as a parameter (RQE) corresponding to the relative quantum e$ciency. Distributions of the number of photomultipliers as a function of the optimal high voltage and as a function of the relative quantum e$ciency are presented. The measured parameters are in good correlation with those provided by the manufacturer. The stability of the photomultipliers has also been followed over two years. The observed count rate decrease is consistent with the radioactive decay of 90Sr. ( 2000 Elsevier Science B.V. All rights reserved.
منابع مشابه
High-gain DC-mode operated Gaseous Photomultipliers for the visible spectral range
We shortly describe recent progress in photon detectors combining bi-alkali photocathodes and cascaded patterned gas-avalanche electron multipliers. It permitted the development and the first feasibility demonstration of high-gain gaseous photomultipliers sensitive in the visible spectral range, operated in DC mode with single-photon sensitivity.
متن کاملAdvances in gas avalanche photomultipliers
Gas avalanche detectors, combining solid photocathodes with fast electron multipliers, provide an attractive solution for photon localization over very large sensitive areas and under high illumination #ux. They o!er single-photon sensitivity and the possibility of operation under very intense magnetic "elds. We discuss the principal factors governing the operation of gas avalanche photomultipl...
متن کاملDirect measurement of product of the electron mobility and mean free drift time of CdZnTe semiconductors using position sensitive single polarity charge sensing detectors
Related Articles A new detector for mass spectrometry: Direct detection of low energy ions using a multi-pixel photon counter Rev. Sci. Instrum. 83, 013304 (2012) A transport-based model of material trends in nonproportionality of scintillators J. Appl. Phys. 109, 123716 (2011) A digital method for separation and reconstruction of pile-up events in germanium detectors Rev. Sci. Instrum. 81, 103...
متن کاملInfluence of Dark Count on the Performance of Silicon Photomultipliers
The introduction of Silicon Photomultipliers (SiPMs) as single photon sensitive detectors represents a promising alternative to traditional photomultiplier tubes. This is especially true in applications in which it is compulsory to attain magnetic field insensitivity, low photon flux detection, quantum efficiency in the blue region that is comparable to standard photomultipliers, high timing re...
متن کاملA measurement of the photon detection efficiency of silicon photomultipliers
We describe a new method to determine the photon detection efficiency of silicon photomultipliers. This method can also be applied to other photon detectors with single photoelectron resolution. r 2006 Elsevier B.V. All rights reserved. PACS: 95.55.Ka; 95.55.Vj; 29.40. n; 29.30. h
متن کامل