Velocity Compliant Bunching Scheme with Amplitude Modulation Yoshihisa Iwashita Advanced Research Center for Beam Science, Institute for Chemical Research,

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Presentation transcript:

Velocity Compliant Bunching Scheme with Amplitude Modulation Yoshihisa Iwashita Advanced Research Center for Beam Science, Institute for Chemical Research, Kyoto University, Gokanosho, Uji, Kyoto , JAPAN — Neat Bunching & ø-E Rotator Based on Fast Amplitude Modulation by use of Beat —

Neat Bunching (Velocity Compliant)

Local phase space Uses ToF information.

3D Simulation from the Target in Solenoid 100m after the production target Bz=1T, Ø30cm Target: W ø10 x L m 50GeV 100k protons

Time Spread at 100m (PARMSOL) 99MeV<E<101MeV ~10ns 50GeV 100k protons

1D simulation — System Buncher Frequency ??

1D simulation — Before the ø-E Rotator ω buncher = 2ω ø-E = 40MHz τ μ =10ns single harmonic (not sawtooth) ~30%

Required Waveform for Velocity Compliant Bunching

Trigonometric Reduction (some math.)

Layout (Single Four Frequencies, length:3m each. Cavities: VoltageFrequency #115 MV37.5 MHz #215 MV45.5 MHz #38.7 MV35.0 MHz #48.7 MV45.0 MHz f buncher = 40 MHz f ø-E = 20 MHz No 3D sim. result yet... But suppose the following:

✕ ø-E Rotaor

Simple simulation results: after the Phase Rotator (CPEC)