Electron beams scanning: A novel method

Askarbioki, M.; Zarandi, Mahmood Borhani; Khakshournia, S.; Shirmardi, Seyed Pezhman; Sharifian, M

doi:10.1016/j.nima.2018.03.062

Cited by 4 publications

(2 citation statements)

References 16 publications

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“…This glass was irradiated with 10 MeV energy and I = 10 µA for t = 5 s, and it was scanned by using the 2D optical scanner. The spatial profile of the Rhodotron accelerator was reported by other research works as a Gaussian profile, given the optical and dynamic characterization of the output beam [30,31]. Figure 8a and 8b illustrate aspects of this Gaussian profile in the distribution of the light passing through the irradiated glass.…”

Section: The Electron Beam Measurementsmentioning

confidence: 78%

Design and fabrication of 1D and 2D optical scanner for electron beams using color centre generation

et al. 2018

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The present paper focuses on the design and fabrication of 1D and 2D optical scanners to characterize the spatial profile of electron beams. The basis of the two systems is the generation of color centers in glass plates by irradiation, followed by the scanning of the plates, illuminated by a fixed power source (LED) with a maximum power of 3 W in the spectral range of 520-560 nm, with a TCS3200 sensor. In both systems, 6 mm thick glass blades (SiO 2 : 76%) are used instead of expensive dosimetric films. The experimental results section first focuses on the validation and calibration accuracy of the effective absorbance of the irradiated glass in the LED spectral range with a radiation dose of up to 20 kGy. Then, it describes how the 1D optical scanner was used to scan the spatial profile obtained under the scanning horn of a Rhodotron accelerator with a maximum radiation dose of 7.8 kGy. The experimental results obtained from this method are entirely consistent with the results of other research studies, while this method is more cost-efficient and accurate compared to the previously reported methods. The 2D optical scanner was also used to accurately measure the spatial profile of the Rhodotron electron beam in static mode by scanning the color centers generated by irradiation. K: Beam Optics; Beam-line instrumentation (beam position and profile monitors; beamintensity monitors; bunch length monitors); Interaction of radiation with matter 1Corresponding author.

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Section: The Electron Beam Measurementsmentioning

confidence: 78%

Design and fabrication of 1D and 2D optical scanner for electron beams using color centre generation

et al. 2018

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“…The diameter of the laser beam is tuned by the optical devices such that in the glass position should be the least, and in the detector position as large as the detector window. For tuning the beam diameter by the optical devices, it should be noticed that using glassy pieces such as lenses and coated mirrors to be minimized, because using them in the vicinity of electron beams leads to their turbidity due to the color center generation [21]. The distances of He-Ne laser and the detector from the glass, in this research, are 4m and 55 cm, respectively.…”

Section: Depth-dose Scanmentioning

confidence: 88%

The online measuring of the average electron beam energy using CO₂, He-Ne lasers and optical laminas

et al. 2019

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Electron beam profile measurement using enhanced dual-techniques in high heat flux test facility at Institute for Plasma Research

Belsare,

Bhope,

Mehta

et al. 2024

Review of Scientific Instruments

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During operation of an ITER-like plasma fusion device, Plasma Facing Components (PFCs) of a divertor are subjected to steady-state and transient heat loads of up to 20 MW/m2. At High Heat Flux Test Facility (HHFTF) at Institute for Plasma Research, PFCs are subjected to such heat flux scenarios using 200 kW electron beam (EB). A heat flux distribution on PFCs is significantly influenced by the EB profile and scanning technique. A novel dual-technique approach is used to measure EB cross-sectional profiles in HHFTF. A single setup is designed, fabricated, and installed in HHFTF consisting of (1) the knife-edge technique involving graphite and tungsten rectangular tiles bonded on a copper block adjacent to each other to form a sharp edge and (2) the wire scanner technique wherein tungsten wires are placed at equal distances. Current collected by the setup is measured as EB is rastered across the wire and tile boundaries. Current measured as a function of EB position is used to calculate the EB profile using a customized LabVIEW software application. Experiments are conducted by varying EB power from 28 to 200 kW and correspondingly the full width at half maximum of the EB profile grows from 5.30 to 16.04 mm, as observed by both these techniques. The COMSOL Multiphysics simulation of the wire scanner technique is performed to verify the experimental results. X-ray and infra-red imaging diagnostics of HHFTF are also used to measure the EB profile in a unique and first-of-its-kind way, and they are found to agree well with the dual-technique measurements.

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Electron beams scanning: A novel method

Cited by 4 publications

References 16 publications

Design and fabrication of 1D and 2D optical scanner for electron beams using color centre generation

Design and fabrication of 1D and 2D optical scanner for electron beams using color centre generation

The online measuring of the average electron beam energy using CO₂, He-Ne lasers and optical laminas

Electron beam profile measurement using enhanced dual-techniques in high heat flux test facility at Institute for Plasma Research

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Electron beams scanning: A novel method

Cited by 4 publications

References 16 publications

Design and fabrication of 1D and 2D optical scanner for electron beams using color centre generation

Design and fabrication of 1D and 2D optical scanner for electron beams using color centre generation

The online measuring of the average electron beam energy using CO2, He-Ne lasers and optical laminas

Electron beam profile measurement using enhanced dual-techniques in high heat flux test facility at Institute for Plasma Research

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The online measuring of the average electron beam energy using CO₂, He-Ne lasers and optical laminas