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Thomas Jefferson National Accelerator Facility Page 1 IPR June 26-28, 2007 Tagger microscope R&D: silicon photomultiplier tests integrate pulsesintegrate.

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Presentation on theme: "Thomas Jefferson National Accelerator Facility Page 1 IPR June 26-28, 2007 Tagger microscope R&D: silicon photomultiplier tests integrate pulsesintegrate."— Presentation transcript:

1 Thomas Jefferson National Accelerator Facility Page 1 IPR June 26-28, 2007 Tagger microscope R&D: silicon photomultiplier tests integrate pulsesintegrate pulses create spectrumcreate spectrum LED pulser (485  520 nm) dark box Thermal controller  20º  +100º C SiPM 1.resolution 2.dark rate 3.gain 4.PDE vs T, V bias vs T, V bias measurements taken of: 1 mm 2 4 mm 2 attenuator charge collected (p.e.) events

2 Thomas Jefferson National Accelerator Facility Page 2 IPR June 26-28, 2007 Tagger microscope R&D: silicon photomultiplier tests

3 Thomas Jefferson National Accelerator Facility Page 3 IPR June 26-28, 2007 Beam Line Instrumentation: Active Collimator Full-scale prototype:  8 sectors  4 quadrants  200  m res. Beam test:  Spring 2007  Hall B alcove  parasitic

4 Thomas Jefferson National Accelerator Facility Page 4 IPR June 26-28, 2007 Beam Line Instrumentation: Active Collimator Beam tests in Hall B (2007)  collimated coherent  beam  photon beam spot ~5mm rms  fixed beam, scan the detector (horizontal direction only) left sector right sector detector current horizontal scan position

5 Thomas Jefferson National Accelerator Facility Page 5 IPR June 26-28, 2007 Photon Source: Thin diamond R&D at CHESS ccd X-ray camera ccd X-ray camera diamond target ladder diamond target ladder 4-circle diffraction goniometer X-ray diffraction: assess crystal quality of diamond radiators for the coherent brems. source. Result: large stress deformation observed in the 20  m diamond

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