WET3BH —  Energy Efficiency   (26-Oct-16   16:15—17:15)
Chair: W. Chou, Fermilab, Batavia, Illinois, USA
Paper Title Page
WET3BH1 Improvement of Efficiency of Klystron to Apply the CPD Method 192
 
  • K. Watanabe
    KEK, Ibaraki, Japan
  
  A high power RF sys­tem for the par­ti­cle ac­cel­er­a­tors needs large elec­tri­cal power in the op­er­a­tion. An im­prove­ment of ef­fi­ciency is also al­ways re­quired as a tech­nol­ogy com­po­nent for the en­ergy sav­ing. To im­prove ef­fi­ciency of a high-power source, the CPD (Col­lec­tor Po­ten­tial De­pres­sion) method al­ready was ap­plied a Gy­ro­tron to re­cov­ery the elec­tri­cal en­ergy form the col­lec­tor loss. The CPD is an en­ergy-sav­ing scheme that re­cov­ers the ki­netic en­ergy of the spent elec­trons after gen­er­at­ing rf power. A CPD kly­stron (E37703 CPD) was fab­ri­cated at 2013, to re­cy­cle an ex­ist­ing kly­stron of Toshiba E3786. The pur­pose of our study is to demon­strate the proof-of-prin­ci­ple of the CPD method to apply a kly­stron. A plane of R&D of CPD kly­stron at KEK will be re­ported in this meet­ing.  
DOI • reference for this paper ※ https://doi.org/10.18429/JACoW-eeFACT2016-WET3BH1  
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)  
 
WET3BH3
 Study on the International Linear Collider Beam Dump by plasma-wakefield Deceleration  
 
  • T. Saeki, J. Fujimoto, H. Hayano, K. Yokoya
    KEK, Ibaraki, Japan
  • A. Chaopresenter
    SLAC, Menlo Park, California, USA
  • D.M. Farinella, T. Tajima, X. Zhang
    UCI, Irvine, California, USA
  • D. Perret-Gallix
    IN2P3, Paris, France
  • M. Zeng
    IFIN-HH, Bucharest - Magurele, Romania
  
  Funding: This work is supported by Grant-in-Aid for Challenging Exploratory Research, JSPS KAKENHI Grant Number 15K13494.
As the scale of ac­cel­er­a­tor pro­jects and their power con­sump­tions in­crease, im­prov­ing the power ef­fi­ciency and the power re­cov­ery of ac­cel­er­a­tor sys­tems be­come im­me­di­ate and im­por­tant re­quire­ment and goal. More­over, the ra­di­a­tion level in the ac­cel­er­a­tors should be kept to a min­i­mum ex­tent to cope with en­vi­ron­men­tal con­sid­er­a­tion. In the de­sign of the next fu­ture largest ac­cel­er­a­tor, the In­ter­na­tional Lin­ear Col­lider (ILC), im­por­tant ef­forts are being un­der­taken to re­duce the elec­tric­ity con­sump­tion and to lower the ra­di­a­tion level. Con­se­quently, we pro­posed a new sys­tem of beam dump which is based on the wake­field de­cel­er­a­tion of beams in plasma, where the ra­di­a­tion level is far less than in the con­ven­tional de­signs and where the beam power might be re­cov­ered. We started the study in early 2015 and first fo­cused on sim­u­la­tion where the ILC elec­tron beams at 250 GeV is dumped into a gas cham­ber so as to cre­ate a plasma and there­fore to achieve ef­fi­cient de­cel­er­a­tion. We will also con­sider en­ergy re­cov­ery from the cre­ated plasma in the gas cham­ber. The ar­ti­cle pre­sents the cur­rent sta­tus of these stud­ies. 		 
Export • reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)