Barrier RF Stacking
- Fermilab (United States)
- Caltech (United States)
- KEK (Japan)
A novel wideband RF system, nicknamed the barrier RF, has been designed, fabricated and installed in the Fermilab Main Injector. The cavity is made of seven Finemet cores, and the modulator made of two bipolar high-voltage fast solid-state switches. The system can deliver {+-}7 kV square pulses at 90 kHz. The main application is to stack two proton batches injected from the Booster and squeeze them into the size of one so that the bunch intensity can be doubled. High intensity beams have been successfully stacked and accelerated to 120 GeV with small losses. The problem of large longitudinal emittance growth is the focus of the present study. An upgraded system with two barrier RF cavities for continuous stacking is under construction. This work is part of the US-Japan collaborative agreement.
- OSTI ID:
- 20722782
- Journal Information:
- AIP Conference Proceedings, Vol. 773, Issue 1; Conference: 33. ICFA advanced beam dynamics workshop on high intensity and high brightness hadron beams, Bensheim (Germany), 18-22 Oct 2004; Other Information: DOI: 10.1063/1.1949548; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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