High-voltage elements of a tandem accelerator with vacuum insulation

Sorokin, Igor; Широков, В. В.

doi:10.1134/s0020441207060012

Cited by 7 publications

(2 citation statements)

References 2 publications

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“…The accelerator is characterized by fast acceleration of charged particles (25 kV/cm), large distance between ion beam and insulator (on which electrodes are mounted), large stored energy in the accelerating vacuum gaps (up to 26 J) and strong input electrostatic lens. The high-voltage strength of centimetre vacuum gaps with large stored energy (up to 50 J) was investigated [9]. The way of consistent training of accelerating gaps proposed and realized and the required voltage of 1 MV was obtained [10].…”

Section: Features Of the Acceleratormentioning

confidence: 99%

Proton beam of 2 MeV 1.6 mA on a tandem accelerator with vacuum insulation

et al. 2014

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New type of charged particles accelerator, tandem accelerator with vacuum insulation, was proposed in BINP. The accelerator is characterized by fast acceleration of charged particles, long distance between ion beam and insulator (on which electrodes are mounted), big stored energy in the accelerating gaps and strong input electrostatic lens. High-voltage strength of vacuum gaps, dark currents, ion beam focusing, accelerating and stripping were investigated. Stationary proton beam with 2 MeV energy, 1.6 mA current has just been obtained. The beam is characterized by high-energy monochromaticity-0.1%, and high current stability-0.5%. Here we report the results of these investigations and discuss the proposal for obtaining 2.5 MeV 3 mA proton beam. The accelerator is considered to be a part of epithermal neutron source for boron neutron capture therapy and monoenergetic neutron source for calibration of dark matter detector.

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Section: Features Of the Acceleratormentioning

confidence: 99%

Proton beam of 2 MeV 1.6 mA on a tandem accelerator with vacuum insulation

et al. 2014

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“…Due to the absence of data on the high voltage strength of similar systems, at first the electric intensity at the single gap (45 mm) proto type with a high voltage electrode area of 0.7 m 2 was determined and it was 60 kV/cm [2]. This result served as a basis for selecting the electric field intensity in interelectrode gaps of the created accelerator (25 kV/cm).…”

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confidence: 99%

A voltage buildup at high-voltage vacuum gaps of a tandem accelerator with vacuum insulation

Sorokin

Taskaev

2014

Instrum Exp Tech

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A new type of accelerator, namely, an electrostatic tandem accelerator with vacuum insulation, being distinguished by a high acceleration rate of charged particles and a large surface area of accelerating electrodes, was proposed, manufactured, and put into operation to obtain a proton beam with a 2 MeV energy and a direct current up to 10 mA. The influence of breakdowns on the electric strength of high voltage components of the accelerator is studied in the work.

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In-air experimental achievement of high-voltage DC power supply to be installed in a tandem electrostatic accelerator system for boron neutron capture therapy application

Min

Park

Kim

et al. 2023

Review of Scientific Instruments

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The boron neutron capture therapy (BNCT) system developed by the Korea Institute of Radiological and Medical Sciences is a compact neutron source that can be installed at medical institutes. The target energy was accelerated to a maximum of 2.4 MeV–20 mA by introducing a gas stripping device that converts negative hydrogen ions into positive ions. By using the tandem-type accelerator in this way, a high-voltage DC power supply was designed with 1.2 MV–45 mA as the maximum capability. The design was improved to reduce the number of stages of a Cockcroft–Walton voltage multiplier. Hence, the ripple risk of the DC flat top resulting from unwanted stray capacitance was lowered. The overall height and volume of the Cockcroft–Walton voltage multiplier were reduced to less than half those of the existing design method, making miniaturization possible. After such advanced design and manufacturing, performance tests were performed at 750 kV–45 mA under 23 stages of the Cockcroft–Walton voltage multiplier, which is the highest level that can perform at its maximum under in-air conditions. It demonstrated stable performance under in-air conditions without breakdown for 2 h, even at 620 kV–35 mA. To reach the final target of 1.2 MV–45 mA, the groundwork is laid for achieving experimental performance while satisfying the optimal requirements in SF6 gas.

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High-voltage elements of a tandem accelerator with vacuum insulation

Cited by 7 publications

References 2 publications

Proton beam of 2 MeV 1.6 mA on a tandem accelerator with vacuum insulation

Proton beam of 2 MeV 1.6 mA on a tandem accelerator with vacuum insulation

A voltage buildup at high-voltage vacuum gaps of a tandem accelerator with vacuum insulation

In-air experimental achievement of high-voltage DC power supply to be installed in a tandem electrostatic accelerator system for boron neutron capture therapy application

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