Title of article
The performance of prototype vacuum phototriodes in the first full sized supercrystal array for the CMS ECAL endcaps
Author/Authors
Apollonio، نويسنده , , M. and Barber، نويسنده , , G. and Bell، نويسنده , , K.W. and Britton، نويسنده , , D. and Brooke، نويسنده , , J. and Brown، نويسنده , , R.M. and Bourotte، نويسنده , , J. and Camanzi، نويسنده , , B. and Cockerill، نويسنده , , D.J.A. and Davies، نويسنده , , G. and Devitsin، نويسنده , , E. and Ergun، نويسنده , , G. and Gninenko، نويسنده , , S. V. Golubev، نويسنده , , N. and Goussev، نويسنده , , Y. and Haguenauer، نويسنده ,
Pages
9
From page
566
To page
574
Abstract
The performance of prototype vacuum phototriodes is presented from the first full sized supercrystal array for the CMS ECAL endcaps. The array was exposed to high-energy electrons and tested in magnetic fields of up to 3 T, in the CERN North area, in July and August 1999. The mean VPT electron yield, normalised to a naked crystal light yield of 8 photoelectrons/MeV into an HPMT, was found to be 25 electrons/MeV at 3 T for devices from Research Institute Electron, 35 electrons/MeV for devices from Hamamatsu and 18/23 electrons/MeV from Electron Tubes.
Keywords
Vacuum phototriode , Calorimetry , CMS
Journal title
Astroparticle Physics
Record number
2024613
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