A four pulse drive system for the beam induction cells and injector for DARHT Axis 2

During the two last decades, several countries have carried out works to upgrade radiographic electron generators used for hydrodynamics experiments. These studies require small X-ray spot sizes (~ 2mm), associated with very high dose rates (~ 5.10 9 rad/s). These goals have been successfully obtained on several facilities like AIRIX 1 , DARHT 2 , RITS 6 3 and Dragon I 4 .Multi-axis as well as multi-pulses facilities are currently being considered as natural evolutions. The DARHT II 5 in the US and the Dragon II 6 in China are new accelerators capable of delivering several pulses to a target. Ten years ago, the PSI Company proposed a "frozen waves" 7 multi-pulse driver for radiographic application. We report here recent results obtained with a double pulse generator built at CEA/CESTA on this idea. This first prototype consists of two PFL charged by two HV transformers and switched out to produce two 125kV pulses separated by hundreds of nanoseconds to feed an induction cell. Theses results can enlighten us on the risk mitigation for a future two pulses accelerator.

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Inductive voltage adder driven X-ray sources for hydrodynamic radiography

Maenchen

Cordova²,

Gustwiller³

et al.

Digest of Technical Papers. 12th IEEE International Pulsed Power Conference. (Cat. No.99CH36358)

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Inductive Voltage Adder (IVA) accelerators were developed to provide high-current (100s of kA) power pulses at high voltage (up to 20 MV) using robust modular components. This architecture simultaneously resolves problems found in conventional pulsed and linear induction accelerators.A variety of highbrightness pulsed x-ray radiographic sources are needed from sub-megavolt to 16-MeV endpoints with greater source brightness (dose/spotz) than presently available. We are applying WA systems to produce very intense (up.to 75 TW/cma) electron beams for these flash radiographic applications.

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A four pulse drive system for the beam induction cells and injector for DARHT Axis 2

Cited by 7 publications

References 3 publications

Design of a radiographic integrated test stand (RITS) based on a voltage adder, to drive a diode immersed in a high magnetic field

Design of a radiographic integrated test stand (RITS) based on a voltage adder, to drive a diode immersed in a high magnetic field

Investigations on a double pulses generator for radiographic applications

Inductive voltage adder driven X-ray sources for hydrodynamic radiography

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