Beams Document 4126-v1

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A 1-GeV Accumulator Ring in the Booster Tunnel

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Milorad B. Popovic
Updated by:
Milorad B. Popovic
Document Created:
14 May 2012, 16:50
Contents Revised:
14 May 2012, 16:50
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14 May 2012, 16:50
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13 Mar 2013, 15:30
This note describes a concept for a storage ring in the Fermilab Booster tunnel to accumulate 1-GeV beam from the Project-X H- Linac. The ring is made out of permanent magnets, and its primary purpose is to accumulate beam for the Booster. The concept is flexible with regard to linac beam structure. The beam intended for the Booster is accumulated into stationary buckets at ~47 MHz during ~1 msec. (This is much simpler than trying to inject “on the fly” into the ramping Booster.) The beam is then transferred bunch to bucket in a one-turn extraction into the Booster. For the rest of the Booster cycle time of 66.7 msec, the permanent magnet ring can be used to accumulate and store beam for other purposes. The ability to chop bunch-by-bunch in the linac creates many opportunities to package beam for different users in the proposed storage ring. For example, the stored beam can be used for a Pulsed Spallation Source, for a muon-to-electron conversion experiment based on a 100-Hz FFAG ring (Prism/Prime), and/or for a pulsed beam for Short Baseline Neutrino Experiments. These specially packaged beams can be used either directly or after acceleration in the Booster.
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Booster Linac ProjectX
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