Results of Initial Testing of the Four Stage Rhepp Accelerator

Johnson, Douglas; Reed, K.W.; Harjes, H.C.; McClenahan, C.R.; Penn, K.J.; Laderach, G.E.; Weber, Gerald

doi:10.1109/ppc.1993.513368

Cited by 15 publications

(9 citation statements)

References 8 publications

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“…This paper will discuss work on a new family of pulsed accelerators based on experience with singlepulse machines, thermal management techniques (Wavrik, 1992), and refined saturable core switching (Neau, 1983) to deliver systems with high average power capabilities. Groups are developing repetitive, short-pulse high average power machines (Ashby, 1991;Goodman, 1992;Johnson, 1993) that are creating new opportunities in materials surface treatment, waste treatment, food processing, and other applications (Neau, 1994). Unlike thermal processes that heat a total product volume, high power shortpulse beams offer the efficient deposition of energy in a specific volume or in a well defined surface layer.…”

Section: Introductionmentioning

confidence: 99%

“…The need to develop a technology base to support a power plant design based on Inertial Confinement Fusion principles led to the formation of the Repetitive High Energy Pulsed Power (RHEPP) program at Sandia National Laboratories in late 1989. Articles (Harjes, 1990(Harjes, , 1992(Harjes, , 1993Reed, 1990;Johnson, 1993) have described the initial design considerations and preliminary experiments with the RHEPP-I and RHEPP-II accelerators. These systems, at present powered by a 600 kW Westinghouse alternator, utilize magnetic switching, with 2605CO Metglas alloy cores, to form short-pulse outputs and employ linear induction voltage adder technology (Ramirez, 1985) using low-loss 2605-TCA Metglas isolation cores.…”

Section: Introductionmentioning

confidence: 99%

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Recent advances in the development of high average power induction accelerators for industrial and environmental applications

Neau

1995

Radiation Physics and Chemistry

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Short-pulse accelerator technology developed during the early 1960's through the late 1980's is being extended to high average power systems capable of use in industrial and environmental applications. Processes requiring high dose levels and/or high volume throughput will require systems with beam power levels from several hundreds of kilowatts to megawatts. Beam accelerating potentials can range • from less than 1 MeV to as much as 10 MeV depending on the type of beam, aepth of penetration required, and the density of the product being treated. This paper addresses the present status of a family of high average power systems, with output beam power levels up to 200 kW, now in operation that use saturable core switches to achieve output pulse widths of 50 to 80 nanoseconds. Inductive adders and field emission cathodes are used to generate beams of electrons or x-rays at up to 2.5 MeV over areas of 1000 cm:. Similar high average power technology is being used at < 1 MeV to drive repetitive ion beam sources for treatment of material surfaces over 100's of cm 2. KEYWORDSElectron beam, ion beam, high average power, induction adder, magnetic switch

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent advances in the development of high average power induction accelerators for industrial and environmental applications

Neau

1995

Radiation Physics and Chemistry

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“…The machines being developed in the Repetitive High Energy Pulsed Power (RHEPP) project typifies this new generation of high average power accelerator (15). Selection of energy efficient accelerator technologies, with potential for long !…”

Section: Introductionmentioning

confidence: 99%

Environmental and industrial applications of pulsed power systems

Neau

1994

IEEE Trans. Plasma Sci.

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The technology base formed by the development of high peak power simulators, laser drivers, free electron lasers (FEL's), and Inertial Confinement Fusion (ICF) drivers from the early 60's through the late 80's is being extended to high average power short-pulse machines with the capabilities of performing new roles in environmental cleanup applications and in supporting new types of industrial manufacturing processes. Some of these processes will require very high average beam power levels of hundreds of kilowatts to perhaps megawatts. In this paper we briefly discuss new technology capabilities and then concentrate on specific application areas that may benefit from the high specific energies and high average powers attainable with short-pulse machines. 011O5 1993 DtSTBIBU'I'ION OF THIS L._,..:I C,UME:NT IS UNLIMIFED OSTI ¢ ! such as the use of ethylene oxide or methyl bromide, which may, in turn, make accelerator treatment methods more appealing. To gain acceptance, the technology must be shown to offer a robust and cost effective solution to a specific need.

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“…These tests have been useful in checkmg out the PFL system, acquiring information from the operation of the 1 MV L N A for use in the design of the 2.5 MV LNA, and performing diode experiments at the 1 MV, few kW level. Results from these tests are described in reference [6]. The 2.5 MV LIVA has been designed and is now being fabricated.…”

Section: '7mentioning

confidence: 99%

Characterization of the RHEPP 1μs Magnetic Pulse Compression Module

Harjes¹,

Adcock²,

Martinez³

et al.

Ninth IEEE International Pulsed Power Conference

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Albuquerque, NM 87185 --AbstractThe technology for pulsed power basedl high average power accelerators is being developed in the RHEPP (Repetitive High Energy Pulsed Power) project. This technology base uses magnetic pulse compression to generate repetitive, high peak power pulses. The 1 ps pulse compressor accepts 3400 V rms, 120 Hz input power from a 600-kW alternator and delivers unipolar -1 ps rise time, 260 kV pulses to the RHEPF' pulse forming line at a rate of 120 pps. The compressor consiists of 5 stages of pulse compression with a 15 to 260 kV step up transformer between stages 2 and 3. Magnetic switches are used throughout the comprjessor because such switches seem to offer the potential of meeting the lifetime requirements of high average power systems. Thermal and electrical data has been acquired to characterize the compressor during several long duration runs (some over 1 million shots). A description of the compressor and its components along with data and a discussion of the compressors perfomiance are presented. ___-IntroductionStudies showing the beneficial effects cif treating various materials with xrays or particle beams along with changing govemment regulations and increasing public awareness of environmental pollution issues have prompted a growing interest in high average power (HAP) accelerators. Presently, electron and ion beam accelserators operating at average power levels up to a few 100's of kW are used in several conunercial applications. These applications include electron beam welding, semiconductor/surface modification, plastic polymerization, and x-ray lithography. Furthermore a new, larger class of applications requiring higher average power levels (from several 100s of kW to a few M W ) seems to bc cm the horizon. These include flue gas cleanup, medical wastt: treatment, waste water treatment, drinking water treatment, and others[ 1.1. These potential applications will require technology development, but, could represent an opportunity for pulsed power based accelerators to gaiin marketplace acceptance. In each case, however, other technologies (such as DC accelerators, RF accelerators, Cobalt-60 radiation souxces, etc.) will be competing and acceptance will only be gained if pulsed power biased accelerators are demonstrated to have acceptable performance, to be cast effective, and offer significant advantages over more conveintional approaches. the technology for such demonstrations is being developed , in the Repetitive High Energy Pulsed Power (RHEPP) project [2,3].The purpose of the RHEPP project is to develop pulsed power accelerator technology for HAP applications and demonstrate it in a prototype accelerator operating at an output power level of 350 kW. In a high average power application, an acclelerator will be required to operate efficiently and reliably for a long time (5 years or more). Consequently, at the onset of the project, the following, criteria were adopted for use in selecting and designing all of the comporients in the system; 1) Low losses, component eff...

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Results of Initial Testing of the Four Stage Rhepp Accelerator

Cited by 15 publications

References 8 publications

Recent advances in the development of high average power induction accelerators for industrial and environmental applications

Recent advances in the development of high average power induction accelerators for industrial and environmental applications

Environmental and industrial applications of pulsed power systems

Characterization of the RHEPP 1μs Magnetic Pulse Compression Module

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