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Shoshin A, Burdakov A, Ivantsivskiy M, Reichle R, Udintsev V, Guirao J, Pak S, Zvonkov A, Kravtsov D, Sorokina N, Sulyaev Y, Listopad A, Gavrilenko D, Taskaev A, Shabunin E, Seryomin V, Shiyankov S, Zaytcev E, Seleznev P, Semenov A, Polosatkin S, Taskaev S, Kasatov D, Shchudlo I, Bikchurina M, Modestov V, Smirnov A, Pozhilov A, Lobachev A, Loginov I, Shagniev O, Kirienko I, Buslakov I. Integration of ITER diagnostic ports at the Budker institute. Fusion Engineering and Design 2022. [DOI: 10.1016/j.fusengdes.2022.113114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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2
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Corte-León P, Blanco JM, Zhukova V, Ipatov M, Gonzalez J, Churyukanova M, Taskaev S, Zhukov A. Engineering of Magnetic Softness and Domain Wall Dynamics of Fe-rich Amorphous Microwires by Stress- induced Magnetic Anisotropy. Sci Rep 2019; 9:12427. [PMID: 31455829 PMCID: PMC6711959 DOI: 10.1038/s41598-019-48755-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 08/06/2019] [Indexed: 11/09/2022] Open
Abstract
We observed a remarkable improvement of domain wall (DW) mobility, DW velocity, giant magnetoimpedance (GMI) effect and magnetic softening at appropriate stress-annealing conditions. Beneficial effect of stress-annealing on GMI effect and DW dynamics is associated with the induced transverse magnetic anisotropy. An improvement of the circumferential permeability in the nearly surface area of metallic nucleus is evidenced from observed magnetic softening and remarkable GMI effect rising. We assumed that the outer domain shell with transverse magnetic anisotropy associated to stress-annealing induced transverse magnetic anisotropy affects the travelling DW in a similar way as application of transversal bias magnetic field allowing enhancement the DW velocity. Observed decreasing of the half-width of the EMF peak in stress-annealed microwires can be associated to the decreasing of the characteristic DW width. Consequently, stress annealing enabled us to design the magnetic anisotropy distribution beneficial for optimization of either GMI effect or DW dynamics.
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Affiliation(s)
- P Corte-León
- Dpto. Física de Materiales, Fac. Químicas, UPV/EHU, 20018, San Sebastian, Spain
- Dpto. de Física Aplicada, EIG, UPV/EHU, 20018, San Sebastian, Spain
| | - J M Blanco
- Dpto. de Física Aplicada, EIG, UPV/EHU, 20018, San Sebastian, Spain
| | - V Zhukova
- Dpto. Física de Materiales, Fac. Químicas, UPV/EHU, 20018, San Sebastian, Spain
- Dpto. de Física Aplicada, EIG, UPV/EHU, 20018, San Sebastian, Spain
| | - M Ipatov
- Dpto. Física de Materiales, Fac. Químicas, UPV/EHU, 20018, San Sebastian, Spain
- Dpto. de Física Aplicada, EIG, UPV/EHU, 20018, San Sebastian, Spain
| | - J Gonzalez
- Dpto. Física de Materiales, Fac. Químicas, UPV/EHU, 20018, San Sebastian, Spain
| | - M Churyukanova
- National University of Science and Technology «MISIS», Moscow, 119049, Russia
| | - S Taskaev
- NRU South Ural State University, Chelyabinsk, 454080, Russia
| | - A Zhukov
- Dpto. Física de Materiales, Fac. Químicas, UPV/EHU, 20018, San Sebastian, Spain.
- Dpto. de Física Aplicada, EIG, UPV/EHU, 20018, San Sebastian, Spain.
- IKERBASQUE, Basque Foundation for Science, 48011, Bilbao, Spain.
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Zaidi L, Belgaid M, Taskaev S, Khelifi R. Beam shaping assembly design of 7Li(p,n) 7Be neutron source for boron neutron capture therapy of deep-seated tumor. Appl Radiat Isot 2018; 139:316-324. [PMID: 29890472 DOI: 10.1016/j.apradiso.2018.05.029] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Revised: 03/11/2018] [Accepted: 05/29/2018] [Indexed: 11/19/2022]
Abstract
The development of a medical facility for boron neutron capture therapy at Budker Institute of Nuclear Physics is under way. The neutron source is based on a tandem accelerator with vacuum insulation and lithium target. The proposed accelerator is conceived to deliver a proton beam around 10 mA at 2.3 MeV proton beam. To deliver a therapeutic beam for treatment of deep-seated tumors a typical Beam Shaping Assembly (BSA) based on the source specifications has been explored. In this article, an optimized BSA based on the 7Li(p,n)7Be neutron production reaction is proposed. To evaluate the performance of the designed beam in a phantom, the parameters and the dose profiles in tissues due to the irradiation have been considered. In the simulations, we considered a proton energy of 2.3 MeV, a current of 10 mA, and boron concentrations in tumor, healthy tissues and skin of 52.5 ppm, 15 ppm and 22.5 ppm, respectively. It is found that, for a maximum punctual healthy tissue dose seated to 11 RBE-Gy, a mean dose of 56.5 RBE Gy with a minimum of 52.2 RBE Gy can be delivered to a tumor in 40 min, where the therapeutic ratio is estimated to 5.38. All of these calculations were carried out using the Monte Carlo MCNP code.
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Affiliation(s)
- L Zaidi
- University of Science and Technology Houari Boumediene, Faculty of Physics, SNIRM Laboratory, BP 32 El Alia 16111, Bab Ezzouar 16111, Algeria.
| | - M Belgaid
- University of Science and Technology Houari Boumediene, Faculty of Physics, SNIRM Laboratory, BP 32 El Alia 16111, Bab Ezzouar 16111, Algeria
| | - S Taskaev
- Novosibirsk State University, st. Pirogova 2, Novosibirsk 630090, Russia; Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, pr. Akademika Lavrentieva 11, Novosibirsk 630090, Russia
| | - R Khelifi
- Saad Dahlab University, Departement of Physics, LPTHIRM Laboratory, BP 270 Soumaa, Algeria
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Zhukova V, Blanco JM, Ipatov M, Churyukanova M, Taskaev S, Zhukov A. Tailoring of magnetoimpedance effect and magnetic softness of Fe-rich glass-coated microwires by stress- annealing. Sci Rep 2018; 8:3202. [PMID: 29453403 PMCID: PMC5816593 DOI: 10.1038/s41598-018-21356-3] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 01/30/2018] [Indexed: 11/23/2022] Open
Abstract
There is a pressing need for improving of the high-frequency magneto-impedance effect of cost-effective soft magnetic materials for use in high-performance sensing devices. The impact of the stress-annealing on magnetic properties and high frequency impedance of Fe-rich glass-coated microwires was studied. Hysteresis loops of Fe-rich microwires have been considerably affected by stress- annealing. In stress-annealed Fe- rich microwire we obtained drastic decreasing of coercivity and change of character of hysteresis loop from rectangular to linear. By controlling stress-annealing conditions (temperature and time) we achieved drastic increasing (by order of magnitude) of giant magnetoimpedance ratio. Coercivity, remanent magnetization, diagonal and of-diagonal magnetoimpedance effect of Fe-rich microwires can be tuned by stress-annealing conditions: annealing temperature and time. Observed experimental results are discussed considering relaxation of internal stresses, compressive "back-stresses" arising after stress annealing and topological short range ordering.
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Affiliation(s)
- V Zhukova
- Dpto. Fisica de Materiales, Fac. Quimicas, UPV/EHU, 20018, San Sebastian, Spain
- Dpto. de Física Aplicada, EUPDS, UPV/EHU, 20018, San Sebastian, Spain
| | - J M Blanco
- Dpto. de Física Aplicada, EUPDS, UPV/EHU, 20018, San Sebastian, Spain
| | - M Ipatov
- Dpto. Fisica de Materiales, Fac. Quimicas, UPV/EHU, 20018, San Sebastian, Spain
- Dpto. de Física Aplicada, EUPDS, UPV/EHU, 20018, San Sebastian, Spain
| | - M Churyukanova
- National University of Science and Technology «MISIS», Moscow, 119049, Russia
| | - S Taskaev
- NRU South Ural State University, Chelyabinsk, 454080, Russia
| | - A Zhukov
- Dpto. Fisica de Materiales, Fac. Quimicas, UPV/EHU, 20018, San Sebastian, Spain.
- Dpto. de Física Aplicada, EUPDS, UPV/EHU, 20018, San Sebastian, Spain.
- IKERBASQUE, Basque Foundation for Science, 48011, Bilbao, Spain.
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Kasatov D, Koshkarev A, Kuznetsov A, Makarov A, Ostreinov Y, Shchudlo I, Sorokin I, Sycheva T, Taskaev S, Zaidi L. The accelerator neutron source for boron neutron capture therapy. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1742-6596/769/1/012064] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kasatov D, Makarov A, Shchudlo I, Taskaev S. A study of gamma-ray and neutron radiation in the interaction of a 2 MeV proton beam with various materials. Appl Radiat Isot 2015; 106:38-40. [PMID: 26298434 DOI: 10.1016/j.apradiso.2015.08.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2014] [Revised: 07/29/2015] [Accepted: 08/11/2015] [Indexed: 11/28/2022]
Abstract
Epithermal neutron source based on a tandem accelerator with vacuum insulation and lithium target has been proposed, developed and operated in Budker Institute of Nuclear Physics. The source is regarded as a prototype of a future compact device suitable for carrying out BNCT in oncology centers. In this work the measurements of gamma-ray and neutron radiation are presented for the interaction of a 2 MeV proton beam with various materials (Li, C, F, Al, V, Ti, Cu, Mo, stainless steel, and Ta). The obtained results enabled the optimization of the neutron-generating target and the high energy beam transportation path.
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Affiliation(s)
- D Kasatov
- Budker Institute of Nuclear Physics, 11 Lavrentiev Avenue, 630090 Novosibirsk, Russia; Novosibirsk State University, 2 Pirogov street, 630090 Novosibirsk, Russia
| | - A Makarov
- Budker Institute of Nuclear Physics, 11 Lavrentiev Avenue, 630090 Novosibirsk, Russia
| | - I Shchudlo
- Budker Institute of Nuclear Physics, 11 Lavrentiev Avenue, 630090 Novosibirsk, Russia
| | - S Taskaev
- Budker Institute of Nuclear Physics, 11 Lavrentiev Avenue, 630090 Novosibirsk, Russia; Novosibirsk State University, 2 Pirogov street, 630090 Novosibirsk, Russia.
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Makarov A, Ostreinov Y, Taskaev S, Vobly P. Modification of the argon stripping target of the tandem accelerator. Appl Radiat Isot 2015; 106:53-6. [PMID: 26242555 DOI: 10.1016/j.apradiso.2015.07.046] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2015] [Revised: 06/19/2015] [Accepted: 07/25/2015] [Indexed: 11/28/2022]
Abstract
The tandem accelerator with vacuum insulation has been proposed and developed in Budker Institute of Nuclear Physics. Negative hydrogen ions are accelerated by the positive 1MV potential of the high-voltage electrode, converted into protons in the gas stripping target inside the electrode, and then protons are accelerated again by the same potential. A stationary proton beam with 2 MeV energy, 1.6 mA current, 0.1% energy monochromaticity, and 0.5% current stability is obtained now. To conduct Boron Neutron Capture Therapy it is planned to increase the proton beam current to at least 3 mA. The paper presents the results of experimental studies clarifying the reasons for limiting the current, and gives suggestions for modifying the gas stripping target in order to increase the proton beam current along with the stability of the accelerator.
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Affiliation(s)
- A Makarov
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia
| | - Yu Ostreinov
- Novosibirsk State Technical University, 20 Marx ave., 630073 Novosibirsk, Russia
| | - S Taskaev
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia; Novosibirsk State University, 2 Pirogov str., 630090 Novosibirsk, Russia.
| | - P Vobly
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia
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8
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Sorokin I, Taskaev S. A new concept of a vacuum insulation tandem accelerator. Appl Radiat Isot 2015; 106:101-3. [PMID: 26122976 DOI: 10.1016/j.apradiso.2015.06.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 04/17/2015] [Accepted: 06/13/2015] [Indexed: 10/23/2022]
Abstract
A tandem accelerator with vacuum insulation has been proposed and developed in the Budker Institute of Nuclear Physics. Negative hydrogen ions are accelerated by the positive 1 MV potential of the high voltage electrode, converted into protons in the gas stripping target inside the electrode, and then the protons are accelerated again by the same potential. The potential for high voltage and intermediate electrodes is supplied by the sectioned rectifier through a sectioned bushing insulator with a resistive divider. In this work, we propose a radical improvement of the accelerator concept. It is proposed to abandon the separate placement of the accelerator and the power supply and connect them through the bushing insulator. The source of high voltage is proposed to be located inside the accelerator insulator with high voltage and intermediate electrodes mounted on it. This will reduce the facility height from 7 m to 3m and make it really compact and attractive for placing in a clinic. This will significantly increase the stability of the accelerator because the potential for intermediate electrodes can be fed directly from the relevant sections of the rectifier.
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Affiliation(s)
- I Sorokin
- Budker Institute of Nuclear Physics, 11 Lavrentiev avenue, 630090 Novosibirsk, Russia
| | - S Taskaev
- Budker Institute of Nuclear Physics, 11 Lavrentiev avenue, 630090 Novosibirsk, Russia; Novosibirsk State University, 2 Pirogov Street, 630090 Novosibirsk, Russia.
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Aleynik V, Bashkirtsev A, Kanygin V, Kasatov D, Kuznetsov A, Makarov A, Schudlo I, Sorokin I, Taskaev S, Tiunov M. Current progress and future prospects of the VITA based neutron source. Appl Radiat Isot 2013; 88:177-9. [PMID: 24369890 DOI: 10.1016/j.apradiso.2013.11.132] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Revised: 10/31/2013] [Accepted: 11/21/2013] [Indexed: 11/30/2022]
Abstract
At the BINP, a pilot accelerator based epithermal neutron source is now in use. Most recent investigations on the facility are related with studying the dark current, X-ray radiation measuring, optimization of H(-)-beam injection and new gas stripping target calibrating. The results of these studies, ways of providing stability to the accelerator are presented and discussed, as well as the ways of creating the therapeutic beam and strategies of applying the facility for clinical use.
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Affiliation(s)
- V Aleynik
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia
| | - A Bashkirtsev
- Novosibirsk State Technical University, 20 Karl Marx str., 630092 Novosibirsk, Russia
| | - V Kanygin
- Neurosurgery Center, 2a Vladimirovskiy spusk, 630003 Novosibirsk, Russia
| | - D Kasatov
- Novosibirsk State University, 2 Pirogov str., 630090 Novosibirsk, Russia
| | - A Kuznetsov
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia
| | - A Makarov
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia
| | - I Schudlo
- Novosibirsk State Technical University, 20 Karl Marx str., 630092 Novosibirsk, Russia
| | - I Sorokin
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia
| | - S Taskaev
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia; Novosibirsk State University, 2 Pirogov str., 630090 Novosibirsk, Russia.
| | - M Tiunov
- Budker Institute of Nuclear Physics, 11 Lavrentiev ave., 630090 Novosibirsk, Russia
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Kandiev Y, Kashaeva E, Malyshkin G, Bayanov B, Taskaev S. Optimization of the target of an accelerator-driven neutron source through Monte Carlo numerical simulation of neutron and gamma transport by the PRIZMA code. Appl Radiat Isot 2011; 69:1632-4. [PMID: 21482125 DOI: 10.1016/j.apradiso.2011.02.052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2010] [Revised: 02/17/2011] [Accepted: 02/20/2011] [Indexed: 11/30/2022]
Abstract
At Budker Institute of Nuclear Physics, epithermal neutron source for neutron-capture therapy was built and neutron generation was realized. Source is based on tandem accelerator and uses near-threshold neutron generation from the reaction (7)Li(p,n)(7)Be. The paper describes target optimization through the numerical simulation of proton, neutron and gamma transport by Monte Carlo method (PRIZMA code). It is shown that the near-threshold mode attractive due low activation provides high efficiency of the dose and acceptable therapeutic ratio and advantage depth.
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Affiliation(s)
- Ya Kandiev
- All-Russian Scientific Research Institute of Technical Physics, Snezhinsk, Chelyabinsk Region, Russia
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11
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Aleynik V, Burdakov A, Davydenko V, Ivanov A, Kanygin V, Kuznetsov A, Makarov A, Sorokin I, Taskaev S. BINP accelerator based epithermal neutron source. Appl Radiat Isot 2011; 69:1635-8. [PMID: 21439836 DOI: 10.1016/j.apradiso.2011.03.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2010] [Revised: 03/03/2011] [Accepted: 03/09/2011] [Indexed: 10/18/2022]
Abstract
Innovative facility for neutron capture therapy has been built at BINP. This facility is based on compact vacuum insulation tandem accelerator designed to produce proton current up to 10 mA. Epithermal neutrons are proposed to be generated by 1.915-2.5 MeV protons bombarding a lithium target using (7)Li(p,n)(7)Be threshold reaction. In the article, diagnostic techniques for proton beam and neutrons developed are described, results of experiments on proton beam transport and neutron generation are shown, discussed, and plans are presented.
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Affiliation(s)
- V Aleynik
- Budker Institute of Nuclear Physics, Novosibirsk, Russia
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Aleynik V, Bayanov B, Burdakov A, Makarov A, Sinitskiy S, Taskaev S. New technical solution for using the time-of-flight technique to measure neutron spectra. Appl Radiat Isot 2011; 69:1639-41. [PMID: 21371897 DOI: 10.1016/j.apradiso.2011.02.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2010] [Revised: 02/01/2011] [Accepted: 02/07/2011] [Indexed: 10/18/2022]
Abstract
New technical solution is proposed for using the time-of-flight technique to measure neutron spectra on VITA-facility. During 200 ns the energy of protons increases from 1.865 up to 1.915 MeV by supplying the square pulse of 50 kV on the neutron-generating target, which is isolated from facility body. During these 200 ns the generation of neutrons is performed. The spectrum can be obtained measuring the time of flight by a remote neutron detector.
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Affiliation(s)
- V Aleynik
- Budker Institute of Nuclear Physics, Novosibirsk, Russia
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13
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Bayanov B, Burdakov A, Chudaev V, Ivanov A, Konstantinov S, Kuznetsov A, Makarov A, Malyshkin G, Mekler K, Sorokin I, Sulyaev Y, Taskaev S. First neutron generation in the BINP accelerator based neutron source. Appl Radiat Isot 2009; 67:S285-7. [DOI: 10.1016/j.apradiso.2009.03.077] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
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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Affiliation(s)
- B Bayanov
- Budker Institute of Nuclear Physics, Lavrentiev ave., 11, Novosibirsk, Russia
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15
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16
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Abstract
Pilot innovative accelerator-based neutron source for neutron capture therapy is under construction now at the Budker Institute of Nuclear Physics, Novosibirsk, Russia. One of the main elements of the facility is lithium target, that produces neutrons via threshold (7)Li(p,n)(7)Be reaction at 25 kW proton beam with energies 1.915 or 2.5 MeV. In the present report, the results of experiments on neutron producing target prototype are presented, the results of calculations of hydraulic resistance for heat carrier flow and lithium layer temperature are shown. Calculation showed that the lithium target could run up to 10 mA proton beam before melting. Choice of target variant is substantiated. Program of immediate necessary experiments is described. Target design for neutron source constructed at BINP is presented. Manufacturing the neutron producing target up to the end of 2004 and obtaining a neutron beam on BINP accelerator-based neutron source are planned during 2005.
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Affiliation(s)
- B Bayanov
- Budker Institute of Nuclear Physics, 11 Lavrentiev avenue, 630090 Novosibirsk, Russia
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