[Rich] Interesting paper

[Valery Kubarovsky]

4]  arXiv:1403.3215 <http://arxiv.org/abs/1403.3215> (cross-list from
physics.ins-det) [pdf <http://arxiv.org/pdf/1403.3215>,
other<http://arxiv.org/format/1403.3215>
]
 Characterization of the Hamamatsu R11265-103-M64 multi-anode
photomultiplier tube
 L. Cadamuro <http://arxiv.org/find/physics/1/au:+Cadamuro_L/0/1/0/all/0/1>,
M.Calvi <http://arxiv.org/find/physics/1/au:+Calvi_M/0/1/0/all/0/1>, L.
Cassina <http://arxiv.org/find/physics/1/au:+Cassina_L/0/1/0/all/0/1>, A.
Giachero <http://arxiv.org/find/physics/1/au:+Giachero_A/0/1/0/all/0/1>, C.
Gotti <http://arxiv.org/find/physics/1/au:+Gotti_C/0/1/0/all/0/1>, B.
Khanji<http://arxiv.org/find/physics/1/au:+Khanji_B/0/1/0/all/0/1>,
M. Maino <http://arxiv.org/find/physics/1/au:+Maino_M/0/1/0/all/0/1>, C.
Matteuzzi <http://arxiv.org/find/physics/1/au:+Matteuzzi_C/0/1/0/all/0/1>, G.
Pessina <http://arxiv.org/find/physics/1/au:+Pessina_G/0/1/0/all/0/1>
 Comments: 22 pages
 Subjects: Instrumentation and Detectors (physics.ins-det); High Energy
Physics - Experiment (hep-ex)

The aim of this paper is to fully characterize the new multi-anode
photomultiplier tube R11265-103-M64, produced by Hamamatsu. Its high
effective active area (77%), its pixel size, the low dark signal rate and
the capability to detect single photon signals make this tube suitable for
an application in high energy physics, such as for RICH detectors. Four
tubes and two different bias voltage dividers have been tested. The results
of a standard characterization of the gain and the anode uniformity, the
dark signal rate, the cross-talk and the device behaviour as a function of
temperature have been studied. The behaviour of the tube is studied in a
longitudinal magnetic field up to 100 Gauss. Shields made of a high
permeability material are also investigated. The deterioration of the
device performance due to long time operation at intense light exposure is
studied. A quantitative analysis of the variation of the gain and the dark
signals rate due to the aging is described.
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