Title :
Radiation field from an extended planar-anode diode on HERMES III
Author :
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.
Author_Institution :
Sandia Nat. Lab., Albuquerque, NM, USA
fDate :
12/1/1989 12:00:00 AM
Abstract :
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 1.2×1012 rad/s over 3100 cm2 to about 5.6×1012 rad/s over 700 cm2 without destruction of the bremsstrahlung target
Keywords :
bremsstrahlung; diodes; electron accelerators; gamma-ray production; particle accelerator accessories; 16 TW; HERMES III electron accelerator; MAGIC-CYLTRAN model; annular cathode; bremsstrahlung field; bremsstrahlung target; computer model; diode impedance; dose rate generation; electron trajectories; extended planar-anode diode; gamma radiation source; Anodes; Cathodes; Computational modeling; Computer simulation; Current measurement; Diodes; Electromagnetic radiation; Electron accelerators; Pulse measurements; Testing;
Journal_Title :
Nuclear Science, IEEE Transactions on
