Title :
Eliminating the spot dilution due to kicker switching in DARHT-II
Author :
Chen, Yu-Jiuan ; Chambers, Frank W. ; Paul, Arthur C. ; Watson, James A. ; Weir, J.T.
Author_Institution :
Lawrence Livermore Nat. Lab., CA, USA
Abstract :
To produce four short X-ray pulses for radiography, the second-axis of the Dual Axis Radiographic Hydrodynamic Test facility (DARHT-II) will use a fast kicker to select current pulses out of the 2-μs duration beam provided by the accelerator. Beam motion during the kicker voltage switching could lead to dilution of the time integrated beam spot and make the spot elliptical. A large elliptical X-ray source produced by those beams would degrade the resolution and make radiographic analysis difficult. We have developed a tuning strategy to eliminate the spot size dilution, and tested the strategy successfully on ETA-II with the DARHT-II kicker hardware.
Keywords :
beam handling equipment; beam handling techniques; particle beam dynamics; radiography; DARHT-II; DARHT-II kicker hardware; Dual Axis Radiographic Hydrodynamic Test facility; ETA-II; X-ray pulses; duration beam; elliptical X-ray source; kicker switching; kicker voltage switching; radiography; spot dilution; tuning strategy; Contracts; Gaussian processes; Hardware; Magnetic fields; Optical coupling; Particle beams; Radiography; Solenoids; Switching converters; Testing;
Conference_Titel :
Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the
Print_ISBN :
0-7803-7738-9
DOI :
10.1109/PAC.2003.1289780
