Author/Authors :
Baldini، نويسنده , , A. and Bemporad، نويسنده , , C. and Cei، نويسنده , , F. and Dussoni، نويسنده , , S. and Gatti، نويسنده , , F. and Grassi، نويسنده , , M. and Haruyama، نويسنده , , T. and Hisamatsu، نويسنده , , Y. and Iwamoto، نويسنده , , T. and Mihara، نويسنده , , S. and Mori، نويسنده , , T. and Nicolٍ، نويسنده , , D. and Nishiguchi، نويسنده , , H. and Ootani، نويسنده , , W. and Papa، نويسنده , , Susan A. and Pazzi، نويسنده , , John R. and Sawada، نويسنده , , R. and Sergiampietri، نويسنده , , F. and Signorelli، نويسنده , , G. and Valle، نويسنده , , R. and Yamada، نويسنده , , S.، نويسنده ,
Abstract :
Liquid scintillator calorimeters and in particular liquid cryogenic noble gas detectors can be calibrated and monitored by the use of multiple α -sources distributed in the detector sensitive volume. For the MEG experiment we developed a method based on the use of Po 210 and Am 241 point sources deposited on thin ( 100 μ m diameter) gold-plated tungsten wires permanently suspended in the volume and fixed at the surfaces of the large vessel containing the LXe. The method is valuable in measuring the relative QEs of all PMTs surrounding the sensitive LXe volume, in determining the LXe optical properties for the UV scintillation light and in checking the stability of the calorimeter properties during the experiment.
Keywords :
Radioactive sources , Calibration , Monitoring , MEG experiment , Liquid Xenon calorimeter
