Linac Beam Bunching at 2.5 MHz (Ring rf Frequency)
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
As the present buncher tuning range is only ± 500 KHz about the linac frequency (201.25 MHz) the effective length of buncher #1 had to be shortened. This was accomplished by changing the capacitor plates that form an rf short circuit at the ends of the buncher cavity. The buncher cavity and rf system was then tuned to 203.75 MHz using a signal generator. 3.5 mW of 2.5 MHz from the ring starting oscillator was then mixed with 40 mW from the linac reference line using a balanced mixer. The upper sideband of 203.75 MHz was then amplified to 40 mW with a Boonton amplifier and fed into the amplifier system. The Q of the cavity and amplifiers was sufficient to attenuate the carrier and lower sideband frequencies.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); US Energy Research and Development Administration (ERDA)
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 1129710
- Report Number(s):
- BNL--103963-2014-IR
- Country of Publication:
- United States
- Language:
- English
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