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RF Kicker for Head-on-Collision

RF Kicker for Head-on-Collision. Y. Iwashita Accelerator Laboratory, Advanced Research Center of Beam Science, Institute for Chemical Research, Kyoto University, Gokanosho, Uji, Kyoto 611-0011, JAPAN iwashita@kyticr.kuicr.kyoto-u.ac.jp http://wwwal.kuicr.kyoto-u.ac.jp.

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RF Kicker for Head-on-Collision

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  1. RF Kicker for Head-on-Collision • Y. IwashitaAccelerator Laboratory, • Advanced Research Center of Beam Science, Institute for Chemical Research, Kyoto University, Gokanosho, Uji, Kyoto 611-0011, JAPANiwashita@kyticr.kuicr.kyoto-u.ac.jphttp://wwwal.kuicr.kyoto-u.ac.jp

  2. Time Structure of Beam

  3. Magnetic Field Strength B = ~1 T.km @ 250GeV  =L(4m)/(1mrad)=4km B=0.25T

  4. Variant Better shielding Step at center? Sketch of a Kicker DC+3MHz (+9MHz) L=4m Stored Energy W ~ 125[J] @0.25T 3cm x133 units

  5. Magnetic Alloy (Finemet) Large Test Core for JPARC Q <1 for non-cut core Q~10 for cut core @a few mm gap

  6. High B, low core loss

  7. FT-3L High B, low core loss, high Tc

  8. Core Loss FT-3L is the best option here.

  9. Single RF needs DC Wide Base needs DC Two RF in One No DC Narrow Base Two RF in One Waveforms-1 Two RF in One: Two cosine components superposition

  10. No DC Separate RF Short LRF Two RF No DC Separate RF 6MHz too (if 2 sides OK) Short LRF Two RF Waveforms-2 Separate RF: Each component for each separate kicker

  11. Separate two RF system for the latter two options. Phase slip for in-bunch can be compensated by phasing. ––> less perturbation Combination

  12. MA has been used for RF accelerating cavity to generate high voltage(V==BS). –> Not for generation of B. ( R&D! ) The number units 133 reduces a serious hazard. (133 cores, 133 Amp’s) Upgradable to 1TeV(6MHz) –– Two sets? Easier than Crab-cavity Comments

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