Rematching AGS Booster synchrotron injection lattice for smaller transverse beam emittances

Technical Report · Wed Jan 25 00:00:00 EST 2017

DOI:https://doi.org/10.2172/1344229· OSTI ID:1344229

Liu, C. ^[1]; Beebe-Wang, J. ^[1]; Brown, K. ^[1]; Gardner, C. ^[1]; Huang, H. ^[1]; Minty, M. ^[1]; Schoefer, V. ^[1]; Zeno, K. ^[1]

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1. Brookhaven National Lab. (BNL), Upton, NY (United States)

The polarized proton beam is injected into the booster via the charge-exchange (H- to H+) scheme. The emittance growth due to scattering at the stripping foil is proportional to the beta functions at the foil. It was demonstrated that the current scheme of reducing the beta functions at the stripping foil preserves the emittance better; however the betatron tunes are above but very close to half integer. Due to concern of space charge and half integer in general, options of lattice designs aimed towards reducing the beta functions at the stripping foil with tunes at more favorable places are explored.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States). Alternating Gradient Synchrotron
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP)
• DOE Contract Number: SC00112704
• OSTI ID: 1344229
• Report Number(s): BNL-113508-2017-IR; R&D Project: KBCH139; KB0202011
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
Alternating Gradient Synchrotron