Cherenkov light as a current-density diagnostic for large-area, repetitively pulsed electron beams
Abstract
Cherenkov light intensity is an ideal electron beam current density diagnostic, giving information about the beam's spatial distribution as a function of time during a pulse. It is free of the fluorescence and saturation often observed in scintillators provided a suitable radiator is chosen. Plate glass was used for single pulse applications. For repetitively pulsed beams a flowing liquid radiator is used to reduce problems arising from heating and decomposition of the material. Light output is sufficient to study 1 A/cm(2), 250 kV beams with ASA 3000 speed film. Streak photography also appears possible.
- Publication:
-
Presented at the Particle Accelerator Conf
- Pub Date:
- 1983
- Bibcode:
- 1983paac.conf.....B
- Keywords:
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- Beam Currents;
- Cerenkov Radiation;
- Current Density;
- Electron Beams;
- Pulsed Radiation;
- Laser Pumping;
- Photographic Measurement;
- Spatial Distribution;
- Streak Photography;
- Atomic and Molecular Physics