Author/Authors :
A.، Tonazzo, نويسنده , , M.، Bonesini, نويسنده , , F.، Ferri, نويسنده , , P.، Govoni, نويسنده , , M.، Paganoni, نويسنده , , A.، Parravicini, نويسنده , , Andreoni، A نويسنده , , M.، Bondani, نويسنده , , F.، Paleari, نويسنده , , A.S.، Spinelli, نويسنده , , D.، Gibin, نويسنده , , A.، Guglielmi, نويسنده , , A.، Menegolli, نويسنده ,
Abstract :
A precise calibration and monitoring system has been developed for the HARP experiment scintillator-based time of flight system. An Nd-YAG laser with passive Q-switch and active/passive mode-locking and a custom-made laser light injection system based on a bundle of IR monomode optical fibers were used. The laser pulse timing was provided by a novel ultrafast InGaAs MSM photodiode, with 30 ps risetime. Experience over a several month data taking period in 2001 and 2002 shows that drifts in timing down to about 70 ps can be traced.
Keywords :
Laminated waveguide , low-temperature co-fired ceramic (LTCC) , millimeter wave , waveguide transition , rectangular waveguide (RWG)
