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Contribution Poster
Novel micro-pixel avalanche photodiodes and their possible application in cosmic ray/astrophysical researches
Speakers
- Dr. Igor ZHELEZNYKH
Primary authors
- Dr. Igor ZHELEZNYKH (Institute for Nuclear Research of the Russian Academy of Sciences)
Co-authors
- Dr. Boris KHRENOV (D.V. Skobeltsyn Institute of Nuclear Physics, Moscow State University)
- Dr. Ziraddin SADYGOV (Joint Institute of Nuclear Research, Dubna, Moscow region)
- Dr. Leonid TKATCHEV (Joint Institute of Nuclear Research, Dubna, Moscow region)
- Dr. Fouzi ZERROUK ("Zecotek" Company, Singapore)
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Abstract content
In 80th a new type of APDs with negative local feedback which significantly
reduces the excess noise factor introduced by the avalanche process - the
metal-resistive layer-semiconductor (MRS) APDs - were developed in INR
(Moscow) by Sadygov et al. in the frameworks of the Soviet DUMAND program
led by M.A. Markov.
In 90th and during a few last years some new kinds of the Micro-pixel
Avalanche PhotoDiodes (MAPDs), which have high signal gain (up to 10^6),
were developed in INR and JINR (Dubna, Moscow region).
The novel MAPDs with high photon detection efficiency and very good single
electron resolution which were produced and tested by "Dubna APD"
collaboration (JINR - INR - IP AZ - "Zecotek" Company - "Mikron" factory) are
described.
Sensitive area of a MAPD-------------------------- 1 mm^2, 4 mm^2 and 9 mm^2;
Spectral range of sensitivity --------------------- 250-650 nm;
Photon detection efficiency (max.) ------------- 20-30 %;
Operating voltage ----------------------------------- ~100 V.
The excellent parameters of MAPDs are achieved due to forming an electric field
with a specific geometry in the multilayer silicon structure, which ensures the
localization of the avalanche processes and limits them to the micro regions
(micro-pixels) with a diameter of 3 - 30 micron depending of the design.
The multi channel modules of a mosaic type on the basis of MAPDs with the
above mentioned (and improved!) parameters have a high potential for using
as key elements for light detection in fields of Astronomy, Cosmic Ray Physics
and Astroparticle Physics. Application of MAPDs in space imaging detectors
observing the UV flashes in the atmosphere caused by ultra high energy cosmic
ray particles (and other phenomena) is of special interest.
Reference
Proceedings of the 30th International Cosmic Ray Conference; Rogelio Caballero, Juan Carlos D'Olivo, Gustavo Medina-Tanco, Lukas Nellen, Federico A. Sánchez, José F. Valdés-Galicia (eds.); Universidad Nacional Autónoma de México, Mexico City, Mexico, 2008; Vol. 5 (HE part 2), pages 1589-1592