Bremsstrahlung converter system with target in vacuum

Abstract

The design of a bremsstrahlung converter for intense pulsed electron beam with total electron absorption and separated vacuum seal is investigated. The target of the converter is made of molybdenum with a thickness of 250 μm, isolated in vacuum by a titanium membrane of 60 μm thick. The article presents the experimental data of the converter tests, such as the dependence of the dose on the distance, the curve of dose rate, the image of the X-ray source obtained by the pinhole camera, and the thermal image of the converter exit window from the infrared camera. A dose of 10 mGy per pulse was demonstrated, with an instantaneous pulse dose rate of 0.1 MGy/s at a distance of 3 cm from the target plane. Reliable continuous operation for more than 1 million pulses at 10 pps has been experimentally achieved.

Original language	English
Article number	110149
Journal	Vacuum
Volume	187
DOIs	https://doi.org/10.1016/j.vacuum.2021.110149
Publication status	Published - May 2021

Keywords

Bremsstrahlung converter
Pulsed X-ray source
X-ray camera obscura
X-ray dose field
X-ray imaging
X-ray pinhole camera

ASJC Scopus subject areas

Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films

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10.1016/j.vacuum.2021.110149

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title = "Bremsstrahlung converter system with target in vacuum",

abstract = "The design of a bremsstrahlung converter for intense pulsed electron beam with total electron absorption and separated vacuum seal is investigated. The target of the converter is made of molybdenum with a thickness of 250 μm, isolated in vacuum by a titanium membrane of 60 μm thick. The article presents the experimental data of the converter tests, such as the dependence of the dose on the distance, the curve of dose rate, the image of the X-ray source obtained by the pinhole camera, and the thermal image of the converter exit window from the infrared camera. A dose of 10 mGy per pulse was demonstrated, with an instantaneous pulse dose rate of 0.1 MGy/s at a distance of 3 cm from the target plane. Reliable continuous operation for more than 1 million pulses at 10 pps has been experimentally achieved.",

keywords = "Bremsstrahlung converter, Pulsed X-ray source, X-ray camera obscura, X-ray dose field, X-ray imaging, X-ray pinhole camera",

author = "Ivan Egorov and Xiao Yu and Artem Poloskov and Maksim Serebrennikov and Xiaoyun Le and Gennady Remnev",

note = "Funding Information: The authors are grateful to Tomsk Polytechnic University (TPU, Russia) for technical support. Device manufacturing was supported by TPU Competitiveness Enhancement Program grant. The experiments with the ASTRA-M accelerator were carried out at TPU within the framework of the state assignment in the field of scientific activity: No. FSWW-2020-0008. Publisher Copyright: {\textcopyright} 2021 Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",

year = "2021",

month = may,

doi = "10.1016/j.vacuum.2021.110149",

language = "English",

volume = "187",

journal = "Vacuum",

issn = "0042-207X",

publisher = "Elsevier Limited",

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AU - Egorov, Ivan

AU - Yu, Xiao

AU - Poloskov, Artem

AU - Serebrennikov, Maksim

AU - Le, Xiaoyun

AU - Remnev, Gennady

N1 - Funding Information: The authors are grateful to Tomsk Polytechnic University (TPU, Russia) for technical support. Device manufacturing was supported by TPU Competitiveness Enhancement Program grant. The experiments with the ASTRA-M accelerator were carried out at TPU within the framework of the state assignment in the field of scientific activity: No. FSWW-2020-0008. Publisher Copyright: © 2021 Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/5

Y1 - 2021/5

N2 - The design of a bremsstrahlung converter for intense pulsed electron beam with total electron absorption and separated vacuum seal is investigated. The target of the converter is made of molybdenum with a thickness of 250 μm, isolated in vacuum by a titanium membrane of 60 μm thick. The article presents the experimental data of the converter tests, such as the dependence of the dose on the distance, the curve of dose rate, the image of the X-ray source obtained by the pinhole camera, and the thermal image of the converter exit window from the infrared camera. A dose of 10 mGy per pulse was demonstrated, with an instantaneous pulse dose rate of 0.1 MGy/s at a distance of 3 cm from the target plane. Reliable continuous operation for more than 1 million pulses at 10 pps has been experimentally achieved.

AB - The design of a bremsstrahlung converter for intense pulsed electron beam with total electron absorption and separated vacuum seal is investigated. The target of the converter is made of molybdenum with a thickness of 250 μm, isolated in vacuum by a titanium membrane of 60 μm thick. The article presents the experimental data of the converter tests, such as the dependence of the dose on the distance, the curve of dose rate, the image of the X-ray source obtained by the pinhole camera, and the thermal image of the converter exit window from the infrared camera. A dose of 10 mGy per pulse was demonstrated, with an instantaneous pulse dose rate of 0.1 MGy/s at a distance of 3 cm from the target plane. Reliable continuous operation for more than 1 million pulses at 10 pps has been experimentally achieved.

KW - Bremsstrahlung converter

KW - Pulsed X-ray source

KW - X-ray camera obscura

KW - X-ray dose field

KW - X-ray imaging

KW - X-ray pinhole camera

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