Author: Knobloch, J.
Paper Title Page
MOPAB347 High Power Coupler Conditioning for bERLinPro Energy Recovery Linac Injector 1080
 
  • A. Neumann, W. Anders, F. Göbel, A. Heugel, S. Klauke, J. Knobloch, M. Schuster, Y. Tamashevich
    HZB, Berlin, Germany
  
  Funding: The work is funded by the Helmholtz-Association, BMBF, the state of Berlin and HZB.
Helmholtz Zen­trum Berlin is cur­rently fi­nal­iz­ing the con­struc­tion of the demon­stra­tor En­ergy Re­cov­ery Linac bERLinPro *. The first part, which will be com­mis­sioned, will be the in­jec­tor con­sist­ing of a su­per­con­duct­ing RF (SRF) photo-in­jec­tor (Gun) and a Booster mod­ule made up of three two cell SRF cav­i­ties. For the lat­ter the 2.3 MeV beam from the gun needs to be ac­cel­er­ated to 6.5 MeV, whereas one Booster cav­ity will be op­er­ated in zero-cross­ing mode for bunch-short­en­ing. Thus, for the final stage with a 100 mA beam, the twin power cou­plers of the Booster cav­ity need to de­liver up to 120 kW in trav­el­ling con­ti­nous wave (CW) mode at 1.3 GHz each. To achieve that, a ded­i­cated cou­pler con­di­tion­ing setup was in­stalled and com­mis­sioned. Here, we will pre­sent the first con­di­tion­ing re­sults with the bERLinPro Booster fun­da­men­tal power cou­plers in pulsed and CW regime.
* M. Abo-Bakr et al., in Proc. 9th Int. Particle Accelerator Conf. (IPAC’18), Vancouver, BC, Canada, Apr. 4,, pp. 4127-4130, doi:10.18429/JACoW-IPAC2018-THPMF034 		 
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DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-MOPAB347  
About • paper received ※ 18 May 2021       paper accepted ※ 08 June 2021       issue date ※ 14 August 2021  
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TUPAB343 Final Design Studies for the VSR DEMO 1.5 GHz Coupler 2300
 
  • E. Sharples-Milne, V. Dürr, P. Echevarria, J. Knobloch, A. Neumann, A.V. Vélez
    HZB, Berlin, Germany
  
  With the 1.5 GHz cou­plers for the Vari­able pulse length Stor­age Ring (VSR) DEMO now in the man­u­fac­tur­ing stages, the stud­ies that led to the final cou­pler de­sign will be pre­sented. The sys­tem spe­cific con­straints and de­sign mod­i­fi­ca­tions that com­bat the chal­lenges of ther­mo­me­chan­i­cal stresses, higher order mode (HOM) prop­a­ga­tion and di­men­sional con­straints are ex­plored. This in­cludes S-Pa­ra­me­ter analy­sis, an in-depth study of the cou­pling fac­tor, and mul­ti­pact­ing stud­ies for the av­er­age (1.5 kW) and peak (16 kW) power.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2021-TUPAB343  
About • paper received ※ 19 May 2021       paper accepted ※ 17 June 2021       issue date ※ 14 August 2021  
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