First experimental results from 2MeV proton tandem accelerator for neutron production

Kudryavtsev, A. M.; Belchenko, Yu. I.; Burdakov, A. V.; Давыденко, В. И.; Ivanov, A. A.; Khilchenko, A. D.; Konstantinov, S. G.; Krivenko, A. S.; Kuznetsov, A.; Mekler, K. I.; Sanin, A.; Широков, В. В.; Sorokin, Igor; Sulyaev, Yu. S.; Tiunov, M.

doi:10.1063/1.2802280

Cited by 9 publications

(4 citation statements)

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“…Grids of ion optics and beam dumps of high-power neutral beam injectors for large fusion facilities are some of the examples. Another application, which is of interest for our group, is the long-lifetime neutron-generating target for boron-neutron cancer therapy (BNCT) facility (see, e.g., [4,5]). Such target should be composed of $1 lm lithium layer on the metal substrate.…”

Section: Introductionmentioning

confidence: 99%

Blistering of the selected materials irradiated by intense 200keV proton beam

Astrelin

Burdakov

Bykov

et al. 2010

Journal of Nuclear Materials

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Section: Introductionmentioning

confidence: 99%

Blistering of the selected materials irradiated by intense 200keV proton beam

Astrelin

Burdakov

Bykov

et al. 2010

Journal of Nuclear Materials

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“…The best-known option to improve the hold-off voltage in high vacuum is the adoption of multiple nested screens structures, where each screen is connected to the intermediate voltages. Although the effectiveness of such a solution has already been tested in the past [17,18], it has relevant drawbacks considering the requirement on pumping the gas flowing out of the beam source, and also the beam tilting and the remote handling maintenance, as foreseen in ITER [36].…”

Section: Discussionmentioning

confidence: 99%

“…The RGA signals are in line with the pressure signals. Although the dominant signal is water (18), the gases desorbed during conditioning are: H 2 (2), N 2 or CO (28) and CO 2 (44).…”

Section: Analysis Of the Phenomenologymentioning

confidence: 99%

“…Actually, for long gaps the voltage breakdown shows the tendency to saturate with the gap length; so far there is no experimental evidence that a voltage of 1 MV dc can be sustained by a single high vacuum gap, and for lengths up to 1290 mm it has only been possible to sustain up to 705 kV in high vacuum [17]. On the other hand, it has been demonstrated that 1 MV is achievable by adopting a multi-stage structure [17,18]. • The second corresponds to the introduction of H 2 (or D 2 ) in the ion source and the generation of a plasma in the ion source inductively by the application of RF voltage at 1 MHz to the driver coils.…”

Section: Introductionmentioning

confidence: 99%

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Study of high DC voltage breakdown between stainless steel electrodes separated by long vacuum gaps

et al. 2020

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High voltage (HV) insulation across a single gap in vacuum and low-pressure gas is a critical issue in relation to the development and realization of the electrostatic accelerator for the ITER neutral beam injector (NBI) (Toigo et al 2017 New J. Phys. 19 085004). The present paper describes and analyzes the recent experimental results obtained at the High Voltage Padova Test Facility (HVPTF), the laboratory aimed at supporting the development of the prototype for the ITER NBI (De Lorenzi et al 2011 Fusion Eng. Des. 86 742-5). A voltage up to 800kV DC was achieved in the HVPTF during the experimental campaigns with a sphere-plane configurations having variable gap length (from 30 to 150 mm) and pressure ranging from high vacuum (10 -7 mbar) to 10 -3 mbar in argon. Such an experimental campaign represents one of the few examples where voltages higher than 500-550 kV DC are sustained by a single vacuum gap between electrodes (Rohrbach 1971 CERN Report 71-5) and therefore constitutes additional experience to improve the knowledge of voltage holding across large vacuum gaps. The results in high vacuum indicate that at the beginning of voltage conditioning the breakdown events occur at the same cathodic electric field irrespective of the electrode geometry. However, after sufficient conditioning time, the breakdown voltage distribution seems to depend also on the electric field at the anode and on the total voltage between electrodes. A benchmark between a numerical tool previously developed to predict the voltage holding in high vacuum (voltage holding prediction model, VHPM (Pilan et al 2011 Fusion Eng. Des. 86 742-5)) and the experimental results is also reported and discussed.

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A neutron producing target for BINP accelerator-based neutron source

Bayanov

Kashaeva

Makarov

et al. 2009

Applied Radiation and Isotopes

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An innovative accelerator-based neutron source for BNCT has just started operation at the Budker Institute of Nuclear Physics, Novosibirsk. One of the main elements of the facility is a lithium target producing neutrons via the threshold (7)Li(p,n)(7)Be reaction at 25 kW proton beam with energies of 1.915 MeV or 2.5 MeV. The design of an optimal target and results of the investigation of radiation blistering of the lithium layer were presented at previous NCT Congresses. During the last two years the neutron target has been manufactured, assembled and placed in the facility. Optimization of the target is carried out with the Monte Carlo simulation code MCNP. In this article, the design of the target is discussed, results of all previous investigations are summarized, results of target testing and neutron generation are described, and results of simulation of neutron spectra are presented.

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First experimental results from 2MeV proton tandem accelerator for neutron production

Cited by 9 publications

References 1 publication

Blistering of the selected materials irradiated by intense 200keV proton beam

Blistering of the selected materials irradiated by intense 200keV proton beam

Study of high DC voltage breakdown between stainless steel electrodes separated by long vacuum gaps

A neutron producing target for BINP accelerator-based neutron source

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