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IHEP 98 - 50
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| A.M.Blick, M.Yu.Bogolyubsky , S.V.Erin, Yu.M.Kharlov, M.O.Lobanov, Yu.V.Mikhailov , N.G.Minaev, V.C. Petrov, S.A.Sadovsky, V.D.Samoylenko, V.I.Suzdalev, V.A.Senko, V.V.Tikhonov | ||
| Test of a LED monitoring system for the PHOS spectrometer | ||
| Protvino, 1999.-p.7, figs.8, refs.:8. | ||
A prototype of monitoring system for the Photon Spectrometer (PHOS) of the ALICE experiment at LHC is described in detail. The prototype consists of Control and Master modules. The first one is an 8x8~matrix of Light Emitting Diodes coupled with stable generators of current pulses. The system provides an individual control for each of the 64 channels of PHOS prototype based on lead-tungstate crystals. A long term stability of the order of $10^{-3}$ has been achieved in integral beam test of the monitoring system and PHOS prototypes.
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