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Heat Load Investigation of Collector for High‐Average Power Beam Dump of 80 MW Klystron for CEPC LINAC.

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Title: Heat Load Investigation of Collector for High‐Average Power Beam Dump of 80 MW Klystron for CEPC LINAC.
Authors: Iqbal, Munawar1,2 (AUTHOR), Zhou, Zusheng1,3 (AUTHOR) zszhou@ihep.ac.cn, Xiao, Ouzheng1 (AUTHOR), Habib, Noman1,3 (AUTHOR), Aleem, Abid1 (AUTHOR), Liu, Yu1,3 (AUTHOR), Wang, YiAo1,3 (AUTHOR), Xiao, Han1,3 (AUTHOR), Zia, Abdul Wasy4 (AUTHOR) a.zia@hw.ac.uk, Sandrolini, Leonardo (AUTHOR) leonardo.sandrolini@unibo.it
Source: International Journal of RF & Microwave Computer-Aided Engineering. 3/17/2026, Vol. 2026, p1-10. 10p.
Subjects: Klystrons, Heating load, Energy dissipation, Heat sinks (Electronics), Power (Mechanics), Particle accelerators
Abstract: For the average output power of the C‐band klystron for CEPC LINAC, the power capacity and stability of the collector are investigated. The characteristics of the electron collection, the modeling of the cooling system, and the suppression of the magnetic field are analyzed. The dissipated power is associated with the transverse energy of the electron beam guided by the applied magnetic field profile. We successfully terminated the magnetic field at the collector entrance to defocus the beam for a higher beam spread for lower heat load without using any extra reverse coil. The results indicate that the klystron, driven by a 425‐kV, −416‐A electron beam, can withstand a maximum beam power of 177 MW at zero RF drive. Thermal results indicate, with a 0.03% duty factor, an average power of 52 kW in the collector, a maximum temperature of ? 88°C is measured on the collector with an optimized cooling system. The simulated and theoretical temperatures are in agreement. The power capacity, cooling efficiency, and stability analysis of the collector are carried out in this article. The results establish the high‐power capacity and integrity of the collector. [ABSTRACT FROM AUTHOR]
Copyright of International Journal of RF & Microwave Computer-Aided Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
  Group: Ti
  Data: Heat Load Investigation of Collector for High‐Average Power Beam Dump of 80 MW Klystron for CEPC LINAC.
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  Data: <searchLink fieldCode="AR" term="%22Iqbal%2C+Munawar%22">Iqbal, Munawar</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhou%2C+Zusheng%22">Zhou, Zusheng</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> zszhou@ihep.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Xiao%2C+Ouzheng%22">Xiao, Ouzheng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Habib%2C+Noman%22">Habib, Noman</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Aleem%2C+Abid%22">Aleem, Abid</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Yu%22">Liu, Yu</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+YiAo%22">Wang, YiAo</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xiao%2C+Han%22">Xiao, Han</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zia%2C+Abdul+Wasy%22">Zia, Abdul Wasy</searchLink><relatesTo>4</relatesTo> (AUTHOR)<i> a.zia@hw.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Sandrolini%2C+Leonardo%22">Sandrolini, Leonardo</searchLink> (AUTHOR)<i> leonardo.sandrolini@unibo.it</i>
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  Data: <searchLink fieldCode="JN" term="%22International+Journal+of+RF+%26+Microwave+Computer-Aided+Engineering%22">International Journal of RF & Microwave Computer-Aided Engineering</searchLink>. 3/17/2026, Vol. 2026, p1-10. 10p.
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  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Klystrons%22">Klystrons</searchLink><br /><searchLink fieldCode="DE" term="%22Heating+load%22">Heating load</searchLink><br /><searchLink fieldCode="DE" term="%22Energy+dissipation%22">Energy dissipation</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+sinks+%28Electronics%29%22">Heat sinks (Electronics)</searchLink><br /><searchLink fieldCode="DE" term="%22Power+%28Mechanics%29%22">Power (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Particle+accelerators%22">Particle accelerators</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: For the average output power of the C‐band klystron for CEPC LINAC, the power capacity and stability of the collector are investigated. The characteristics of the electron collection, the modeling of the cooling system, and the suppression of the magnetic field are analyzed. The dissipated power is associated with the transverse energy of the electron beam guided by the applied magnetic field profile. We successfully terminated the magnetic field at the collector entrance to defocus the beam for a higher beam spread for lower heat load without using any extra reverse coil. The results indicate that the klystron, driven by a 425‐kV, −416‐A electron beam, can withstand a maximum beam power of 177 MW at zero RF drive. Thermal results indicate, with a 0.03% duty factor, an average power of 52 kW in the collector, a maximum temperature of ? 88°C is measured on the collector with an optimized cooling system. The simulated and theoretical temperatures are in agreement. The power capacity, cooling efficiency, and stability analysis of the collector are carried out in this article. The results establish the high‐power capacity and integrity of the collector. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of International Journal of RF & Microwave Computer-Aided Engineering is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1155/mmce/8190912
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 10
        StartPage: 1
    Subjects:
      – SubjectFull: Klystrons
        Type: general
      – SubjectFull: Heating load
        Type: general
      – SubjectFull: Energy dissipation
        Type: general
      – SubjectFull: Heat sinks (Electronics)
        Type: general
      – SubjectFull: Power (Mechanics)
        Type: general
      – SubjectFull: Particle accelerators
        Type: general
    Titles:
      – TitleFull: Heat Load Investigation of Collector for High‐Average Power Beam Dump of 80 MW Klystron for CEPC LINAC.
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            – D: 17
              M: 03
              Text: 3/17/2026
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              Y: 2026
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