Author/Authors :
Cushman، نويسنده , , P. and Heering، نويسنده , , A.H. and Pearson، نويسنده , , N. and Elias، نويسنده , , J. and Freeman، نويسنده , , J. and Green، نويسنده , , D. and Los، نويسنده , , S. and Ronzhin، نويسنده , , A.، نويسنده ,
Abstract :
The requirements of large dynamic range, 40 MHz readout and 4 T magnetic field of the CMS Hadronic calorimeter have led to the development of a custom Hybrid PhotoDiode (HPD). In the last 5 years many improvements have been made in cooperation with DEP11B.V. Delft Electronische Producten, Roden, Netherlands.
anberra22Canberra Semiconductor N.V., Olen, Belgium.
e basic HPD concept to improve the performance. A 200-μm thick 19-channel PIN diode array with various surface treatments has been developed to ensure fast pulse behavior and low optical and capacitive crosstalk.
