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常 伝導技術 で の LC の可能性 LC feasibility consideration with normal conducting technology

常 伝導技術 で の LC の可能性 LC feasibility consideration with normal conducting technology. 第５回 「機構の研究推進について」 の意見交換会 (ILC の推進について ) 平成 24 年 2 月 13 日 加速器・肥後寿泰. Why normal conducting for LC now?.

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常 伝導技術 で の LC の可能性 LC feasibility consideration with normal conducting technology

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  1. 常伝導技術でのLCの可能性LC feasibility consideration with normal conducting technology 第５回「機構の研究推進について」の意見交換会 (ILCの推進について) 平成24年2月13日 加速器・肥後寿泰

  2. Why normal conducting for LC now? • Normal conducting (NC) X-band high gradient research has been pursued for the past twenty years at SLAC, KEK and now at CERN. • It is worthwhile to continue this research in order to merge the present NC technology with that currently being developed for a future CLIC-type machine. • If a low energy machineis needed, NC X-band technology may serve as a compact, extendable and versatile (e+e-/γγ)machine. • For higher energies, it can serve as a prototype for a CLIC type machine. 肥後　機構の意見交換会（2月13日）

  3. Physics playground Stage 1: e+ e- Z, WW, HZ @ Eee～ 90 – 250 GeV Stage 2: e+ e- t t e- e- γγ  H, HH @ Eee～ 170 – 350 GeV Stage 3: e+ e- H H Z, t t H @ Eee～ 500 GeV R. Belusevic, KEK Preprint 2008-33 肥後　機構の意見交換会（2月13日）

  4. Accelerator layout 肥後　機構の意見交換会（2月13日）

  5. GLC Project, KEK Report 2003-7 GLC configuration2004 Design: 500 GeV and extendable to 1TeV 肥後　機構の意見交換会（2月13日）

  6. GLC Project, KEK Report 2003-7 GLC two tunnel schematic Klystron peak power 75MW 60cm effective length accelerator structure SLED-II pulse compression 1.6microsec400nsec 肥後　機構の意見交換会（2月13日）

  7. GLC Project, KEK Report 2003-7 GLC RF configuration PPM klystron 75MW, 1.6 microsec 4 klystrons / modulator 29m SLED-II Loaded gradient 50 MV/m 75 MW, 400ns / structure 肥後　機構の意見交換会（2月13日）

  8. Rough-rough design parameters (1) 肥後　機構の意見交換会（2月13日）

  9. Rough-rough design parameters (2) 肥後　機構の意見交換会（2月13日）

  10. Rough-rough design parameters (3) 肥後　機構の意見交換会（2月13日）

  11. 1m RF unit configuration 40MW X 1.0 ms X 2kly Compressor cavity 250MW X 250 nsec 52MW / structure 肥後　機構の意見交換会（2月13日）

  12. Klystron feasibility XL4 NLCTA PPM Nextef PPM Nextef 肥後　機構の意見交換会（2月13日）

  13. KEK’s Fundamental Contributions to 100 MV/m Accelerating Structures Oide, Steinar: KEK/Japan – CERN Collaboration on Linear Collider Studies, Dec. 2011 Fabrication – 6/7 of the above tests, with all best results achieved with KEK-coordinated machining of structures. Testing – 4/7 with best performance of all categories of structures in tests made in NEXTEF at KEK. High-gradient science – Extensive measurements of high-gradient rf instrumental in developing theory. 肥後　機構の意見交換会（2月13日）

  14. Preliminary and at 240ns FLT pulse CLIC req. TD24 T24 肥後　機構の意見交換会（2月13日）

  15. Conclusion • Worthwhile to reconsider NC choice for low energy Higgs physics. • High gradients imply compact accelerator complex. • First stage may be built within a KEK-size site. • Operation can serve as a rigorous test of CLIC design, with exception of drive beam. • Energy extendable. • Physics potential increased using e+e-/γγ • Critical issues still to be discussed are • Overall design • Proof of RF system configuration • Cost 肥後　機構の意見交換会（2月13日）

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