Photodiodes

Photodiodes are used as solid state radiation detectors on BEAST.

Operation of Diodes in BEAST

  • Position of Diodes in BEAST (3-16-99)

  • Photo of a diode box with signal and RTD cables

  • Location of BEAST diodes superimposed on a figure of the BELLE SVD

  • The Sydney diodes for BEAST and BELLE (4-13-99)

  • More results on the Sydney diodes for BEAST and BELLE (4-23-99)

    Construction and Installation of Diodes

  • Instruction for diode amplifier renovation in BEAST (3-30-99)

  • System test of diodes at the University of Hawaii (9-4-98)

  • System test of diodes at the University of Hawaii (Sahu applying heat from the hair dryer to the diode layer) (9-4-98)

  • Instrumented quadrant in the system test. Signals from the diodes are being checked.

  • Instrumented diode layer in the SVD quadrant

  • Diode readout board in system test This board includes G. Varner's modifications for high gain DC measurement.

  • Proposed cabling scheme for the diodes (8-28-98)

  • Design of diode box (8-28-98)

  • Photo of completed diode box with signal and RTD cables (8-28-98)

  • Evidence for time dependent annealing of diodes after radiation damage (8-28-98)

  • Here are some images of the testing (temperature and radiation calibration of the photodiodes.


    Start
    Source
    Timing
    Opening
    Diode Testing

  • A view of the Hawaii Research Irradiator


    Danger!
    HRI
    Outside

  • Temperature and Radiation Calibration System


    The System
    Amp
    T-controlled box

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    4/23/99