Radiation field from an extended planar-anode diode on HERMES III

The bremsstrahlung field from an extended planar-anode diode with an annular cathode tip on the the 16-TW HERMES III electron accelerator is measured and compared with predictions of the MAGIC-CYLTRAN model. Measurements confirm predictions and demonstrate that the diode provides a versatile large-a...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 1989-12, Vol.36 (6), p.1931-1936
Main Authors: Sanford, T.W.L., Halbleib, J.A., Poukey, J.W., Beutler, D.E., Carlson, G.A., Baldwin, G.T., Sheridan, T., Mock, R., Klingler, R.S., Knott, D.P.
Format: Article
Language:English
Subjects:
Anodes
Cathodes
Computational modeling
Computer simulation
Current measurement
Diodes
Electromagnetic radiation
Electron accelerators
Pulse measurements
Testing
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Summary:The bremsstrahlung field from an extended planar-anode diode with an annular cathode tip on the the 16-TW HERMES III electron accelerator is measured and compared with predictions of the MAGIC-CYLTRAN model. Measurements confirm predictions and demonstrate that the diode provides a versatile large-area source of gamma radiation. Versatility is obtained by adjustment of the anode-cathode gap, which affects electron trajectories while simultaneously maintaining constant diode impedance. The adjustment permits the generation of average dose rates from about 1.2*10/sup 12/ rad/s over 3100 cm/sup 2/ to about 5.6*10/sup 12/ rad/s over 700 cm/sup 2/ without destruction of the bremsstrahlung target.< >
ISSN:0018-9499
1558-1578
DOI:10.1109/23.45389