CERN Accelerating science

Article
Report number	physics/0605074
Title	A PMT-Block test bench
Author(s)	Adragna, P ; Antonaki, A ; Boudagov, I ; Cavasinni, V ; Costanzo, D ; Del Prete, T ; Dotti, A ; Fassouliotis, D ; Giakoumopoulou, V ; Giokaris, N ; Guicheney, C ; Karali, E ; Khubua, J ; Lebessi, M ; Lupi, A ; Manoussakis, A ; Mazzoni, E ; Minashvili, I A ; Morphi, M ; Pagani, G F ; Paoletti, R ; Rizzi, D ; Roda, C ; Sarri, F ; Staveris-Polykalas, A ; Staveris-Polykalas, T ; Stoudenov, S ; Usai, G ; Vazeille, F ; Vellidis, C ; Vichou, I ; Vivarelli, I ; Volpi, M
Publication	2006
Imprint	8 May 2006
Number of pages	23
In:	Nucl. Instrum. Methods Phys. Res., A 564 (2006) 597-607
DOI	10.1016/j.nima.2006.03.045
Subject category	Other Fields of Physics
Accelerator/Facility, Experiment	CERN LHC ; ATLAS
Abstract	The front-end electronics of the ATLAS hadronic calorimeter (Tile Cal) is housed in a unit, called {\it PMT-Block}. The PMT-Block is a compact instrument comprising a light mixer, a PMT together with its divider and a {\it 3-in-1} card, which provides shaping, amplification and integration for the signals. This instrument needs to be qualified before being assembled on the detector. A PMT-Block test bench has been developed for this purpose. This test bench is a system which allows fast, albeit accurate enough, measurements of the main properties of a complete PMT-Block. The system, both hardware and software, and the protocol used for the PMT-Blocks characterisation are described in detail in this report. The results obtained in the test of about 10000 PMT-Blocks needed for the instrumentation of the ATLAS (LHC-CERN) hadronic Tile Calorimeter are also reported.

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