A feasibility study of the Tehran research reactor as a neutron source for BNCT

Kasesaz, Yaser; Khalafi, H.; Rahmani, Faezeh; Ezati, Arsalan; Keyvani, M.; Hossnirokh, Ashkan; Shamami, Mehrdad Azizi; Monshizadeh, Mahdi

doi:10.1016/j.apradiso.2014.03.028

Cited by 23 publications

(7 citation statements)

References 8 publications

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“…Experiments and research activities were also performed in Syria [90], Indonesia [75], Korea [68], Vietnam [61] Malaysia [81] and Iran [27,41,43,93,[109][110][111][112][113][114][115].…”

Section: Jinst 12 P05005mentioning

confidence: 99%

“…Since then, no attempt was made to design a -13 -proper neutron beam at TRR. In 2010, BNCT research has been restarted focusing on TRR thermal column [41,43,93,110], construction of a head phantom [111] and evaluation of beam parameters inside of the phantom volume [112]. Simulations have shown that, an epithermal neutron beam can be achieved at the thermal column exit if all graphite blocks are removed from the thermal column and replaced by an appropriate BSA, but in practice, it was impossible to remove all graphite blocks due to the high gamma dose caused by the reactor.…”

Section: Jinst 12 P05005mentioning

confidence: 99%

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Neutron beams implemented at nuclear research reactors for BNCT

2017

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A: This paper presents a survey of neutron beams which were or are in use at 56 Nuclear Research Reactors (NRRs) in order to be used for BNCT, either for treatment or research purposes in aspects of various combinations of materials that were used in their Beam Shaping Assembly (BSA) design, use of fission converters and optimized beam parameters. All our knowledge about BNCT is indebted to researches that have been done in NRRs. The results of about 60 years research in BNCT and also the successes of this method in medical treatment of tumors show that, for the development of BNCT as a routine cancer therapy method, hospital-based neutron sources are needed. Achieving a physical data collection on BNCT neutron beams based on NRRs will be helpful for beam designers in developing a non-reactor based neutron beam. K: Instrumentation for neutron sources; Instrumentation for particle-beam therapy 1Corresponding author.

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“…Experiments and research activities were also performed in Syria [90], Indonesia [75], Korea [68], Vietnam [61] Malaysia [81] and Iran [27,41,43,93,[109][110][111][112][113][114][115].…”

Section: Jinst 12 P05005mentioning

confidence: 99%

Section: Jinst 12 P05005mentioning

confidence: 99%

Neutron beams implemented at nuclear research reactors for BNCT

2017

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“…The demand for a real-time high-flux neutron detector that monitors the fluctuations of a neutron beam during irradiation in a variety of medical, , industrial, − and scientific applications , has been increasing. Neutron irradiation facilities require not only large equipment such as conventional nuclear reactors , but also small equipment such as linear-accelerator-type neutron sources, − which has led to the development of compact equipment that can be installed in hospitals and factories. Due to the development of various applications of neutrons, neutron detectors must be further advanced for long-term monitoring operations, low noise, quick measurements, and miniaturization.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Organic–Inorganic Perovskite Semiconductor-Based High-Flux Neutron Detector with BN Converter

Okuno

Matsui

Kobayashi

et al. 2022

ACS Appl. Electron. Mater.

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Neutrons are analyzed in various fields such as space exploration, neutron radiography, and medicine. When neutrons are employed, a neutron detector is required to control the exposure dose. However, issues such as detector radiation tolerance, response linearity, and γ-ray noise limit the development of effective neutron detectors. Metal halide perovskite based direct conversion radiation detectors exhibit attractive characteristics such as being solution-processable at low temperatures and possessing tunable band gaps, low trap density, high charge carrier mobility, high radiation tolerance, and fast responses. The perovskite device’s potential for high-flux neutron applications has not been greatly determined; however, only related research has been conducted thus far. Here, we demonstrate a hybrid organic–inorganic perovskite semiconductor based neutron detector that satisfies all high-flux neutron detection requirements. The perovskite device was designed to possess a structure similar to that of solar cells and could be driven solely by the built-in potential, without an applied voltage. Using this perovskite device, a neutron detector was designed to maximize the efficiency of the back side conversion configuration and minimize sensitivity variations. Experiments on irradiation with the spectrum neutrons and calculations of the reaction rates revealed a 25 meV neutron sensitivity of 6.0 × 10–17 A n–1 cm–2 and a detection limit of 106 n cm–2 s–1. Further, an optical response test showed that a dynamic detection range with 6–7 orders of magnitude was realized. The detection characteristics for high-flux neutrons indicated a stable operation with no degradation during neutron irradiation at a fluence of −1012 cm–2. Moreover, noise from γ-rays had an insignificant effect on the accuracy of the neutron flux measurements. These results highlight that the proposed neutron detector based on a perovskite solar cell is a suitable monitoring sensor for high-flux neutrons.

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“…Early BNCT experiments and clinical applications have used reactors as neutron sources, such as the Massachusetts Institute of Technology Reactor II [2] and the Tehran Research Reactor [3]. In recent years, with the development of strong current accelerator technology, BNCT neutron sources based on accelerators have been rapidly developed.…”

Section: Introductionmentioning

confidence: 99%

Design of a 200-MHz Continuous-Wave Radio Frequency Quadrupole Accelerator for Boron Neutron Capture Therapy

Gao,

Lu,

Xing

et al. 2021

Preprint

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A high-intensity continuous wave (CW) radio frequency quadrupole (RFQ) accelerator is designed for boron neutron capture therapy (BNCT). The transmission efficiency of a 20-mA proton beam accelerated from 30 keV to 2.5 MeV can reach 98.7% at an operating frequency of 200 MHz. The beam dynamics has good tolerance to errors. By comparing the high-frequency parameters of quadrilateral and octagonal RFQ cross-sections, the quadrilateral structure of the four-vane cavity is selected owing to its multiple advantages, such as a smaller cross section at the same frequency and easy processing. In addition, tuners and undercuts are designed to tune the frequency of the cavity and achieve a flat electric field distribution along the cavity. In this paper, the beam dynamics simulation and electromagnetic design are presented in detail.

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A feasibility study of the Tehran research reactor as a neutron source for BNCT

Cited by 23 publications

References 8 publications

Neutron beams implemented at nuclear research reactors for BNCT

Neutron beams implemented at nuclear research reactors for BNCT

Hybrid Organic–Inorganic Perovskite Semiconductor-Based High-Flux Neutron Detector with BN Converter

Design of a 200-MHz Continuous-Wave Radio Frequency Quadrupole Accelerator for Boron Neutron Capture Therapy

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