I. Introduction to PSD. II. Conception and design. III. Development and production of PSD prototype. IV. Future plans. Status of P rojectile S pectator D etector A.Kurepin (Institute for Nuclear Research, Moscow). PSD. PSD in CBM setup.
I.Introduction to PSD.
II. Conception and design.
III. Development and production of
IV. Future plans.Status of Projectile Spectator DetectorA.Kurepin(Institute for Nuclear Research, Moscow)
Very Forward Hadron Calorimeter for detection of projectile spectators
spectator spots at Z=15m Eau=15 AGeV
Full beam intensity.Minimum 107 modules.
Schematic view of PSD configuration.
Low beam intensity. Detection of fragments. (25 modules)
6 fiber/MAPD 10 MAPDs/module
60 lead/scintillator sandwiches.
groove with WLS-fiber
Size: 3x3 mm2.
Number of pixels: 104/mm2.
Photon detection efficiency:~20%.
Gain: 5-6 x104.
Working voltage: 130-140V.
-- 50 GeV,
-- 80 GeV,
-- 150 GeV
To check the PSD conception first module prototype was developed and tested in 2006. The results are described in internal CBM report.
Summary energy deposition in PSD module for different hadron energies.
To measure the realistic energy resolution the calorimeter prototype of 9 modules was produced this year. It is ready for beam test.
Scintillator tile with groove
Electronic board with amp’s and HV divider
Calibration with muons.
Measurement of energy resolution at hadron energy 20-150 GeV .
Study of the LED monitoring system performance.
Analysis of the data.