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Related Experiment Videos

The Stanford Linear Accelerator Center pulsed x-ray facility.

N E Ipe, R C McCall, E D Baker

    Health Physics
    |April 1, 1987
    PubMed
    Summary

    A new pulsed x-ray facility at the Stanford Linear Accelerator Center (SLAC) was developed to test radiation detection instruments. This versatile system addresses challenges posed by pulsed radiation fields from accelerators.

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    Area of Science:

    • High-energy physics instrumentation
    • Radiation detection and measurement

    Background:

    • The Stanford Linear Accelerator Center (SLAC) operates a high-energy linear accelerator producing pulsed electron beams.
    • The pulsed nature of these beams complicates radiation detection and measurement from both the accelerator and its klystron power sources.

    Purpose of the Study:

    • To establish a dedicated pulsed x-ray facility at SLAC.
    • To enable the testing and calibration of radiation detection instruments in pulsed radiation fields.

    Main Methods:

    • Construction of a pulsed x-ray tube with an electron gun, control grid, and a target window (Al/Au).
    • Utilized internal and external pulsers to control pulse frequency (60-360 Hz), pulse width (360 ns to 5 µs), and pulse shape.
    • Variable electron gun voltage (0-100 kV) and current amplitude.

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  • Shielded facility with plywood and lead lining for versatility and safety.

    • Main Results:

    • Achieved a maximum absorbed dose rate of 258 Gy/h at 6.35 cm below the target window, measured by an ionization chamber.
    • Demonstrated variability in pulse parameters (frequency, width, amplitude) and electron gun voltage.

    Conclusions:

    • The developed pulsed x-ray facility is a versatile tool for evaluating radiation detection instruments under realistic pulsed conditions.
    • The facility effectively simulates radiation environments encountered in high-energy accelerator operations.