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Observation of intrapulse energy switching in standing-wave electron linac Cover

Observation of intrapulse energy switching in standing-wave electron linac

Nukleonika
Volume 67 (2022): Issue 3 (September 2022)
By: Michał Matusiak,  Tymoteusz Kosiński,  Sławomir Wronka and  Tomasz Zakrzewski  
Open Access
|Oct 2022

Figures & Tables

Fig. 1

Scheme of the CANIS-2 linac elements and connections. C – cathode–anode voltage; G – grid voltage; LLRF – low-level RF circuits for proper klystron pulse shaping.

Fig. 2

General view of CANIS-2 stand.

Fig. 3

Electron beam energy as a function of RF power from klystron (PK) and gun current. Linear fit is applied. The error bars represent the uncertainty of the magnetic spectrometer measurements.

Fig. 4

Normalized electron beam energy spectra measured using a magnetic spectrometer for different beam currents (Ie). (Is – a current by magnetic spectrometer’s Faraday cup).

Fig. 5

Dedicated tool for dynamic electron beam energy measurements. The sensitive area is located in the middle, while both ends terminated in air-cooled radiators.

Fig. 6

Calibration curve of the dual-plate device.

Fig. 7

Gun currents measured during the accelerator pulse, shown along with the RF pulse (a); electron energy at the accelerator exit in relation to time for different gun current settings, shown along with the RF pulse (b). All curves averaged over 1000 pulses.

Fig. 8

Oscillogram of the control signals for intrapulse switching.

Fig. 9

Intrapulse energy switching.

Fig. 10

Histogram of electron beam energy obtained during the 6 MeV → 9 MeV energy switching.

Fig. 11

Energy histogram (a) obtained in selected parts of the electron beam pulse (b).

Fig. 12

Energy spectrum measured by the magnetic spectrometer, shown along with the spectra measured without switching.
DOI: https://doi.org/10.2478/nuka-2022-0004 | Journal eISSN: 1508-5791 | Journal ISSN: 0029-5922
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Language: English
Page range: 43 - 47
Submitted on: Feb 3, 2022
|
Accepted on: Jul 4, 2022
|
Published on: Oct 8, 2022
Published by: Institute of Nuclear Chemistry and Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year
Keywords:
Cargo scanning,
Dual-energy imaging,
X-ray imaging
Related subjects:
Chemistry,
Nuclear chemistry,
Physics,
Astronomy and astrophysics,
Physics, other

© 2022 Michał Matusiak, Tymoteusz Kosiński, Sławomir Wronka, Tomasz Zakrzewski, published by Institute of Nuclear Chemistry and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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