| Title |
Simulations of Protons to Extraction at Gγ=7.5 in the AGS Booster |
| Authors |
- K. Hock, H. Huang, F. Méot
BNL, Upton, New York, USA
|
| Abstract |
To prepare for polarized helion collisions at the Electron Ion Collider (EIC), polarization transmission at the injectors for the Hadron Storage Ring must be studied and optimized. To this effect, an AC dipole has been installed in the AGS Booster to maximize polarization transmission of helions through several intrinsic resonances. This installation also allows polarized protons to be extracted at higher energy without polarization loss. By increasing the proton extraction energy from $Gγ$ = 4.5 to $Gγ$ = 7.5, protons will cross the $Gγ$ = 0 + ν_{y}$ and $Gγ = 12 - ν_{y}$ depolarizing vertical intrinsic resonances, the $Gγ$ = 5, 6, and 7 imperfection resonances in addition to the $Gγ$ = 3, 4 that are crossed in the present configuration, and be injected into the AGS at a higher rigidity. By simulation, it is determined that there is sufficient strength of the AC dipole to fully flip the spin spin through each of the intrinsic resonances, and there is sufficient corrector current to preserve polarization through the three additional imperfection resonances. The higher injection rigidity facilitates the horizontal and vertical tunes being placed inside the AGS spin-tune gap at injection due to a substantial improvement on the AGS admittance at injection.
|
| Funding |
Work supported by Brookhaven Science Associates, LLC under Contract No. DE-AC02-98CH10886 with the U.S. Department of Energy. |
| Paper |
download MOPOST008.PDF [1.092 MB / 4 pages] |
| Cite |
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※ EndNote |
| Conference |
IPAC2022 |
| Series |
International Particle Accelerator Conference (13th) |
| Location |
Bangkok, Thailand |
| Date |
12-17 June 2022 |
| Publisher |
JACoW Publishing, Geneva, Switzerland |
| Editorial Board |
Frank Zimmermann (CERN, Meyrin, Switzerland); Hitoshi Tanaka (RIKEN, Hyogo, Japan); Porntip Sudmuang (SRLI, Nakhon, Thailand); Prapong Klysubun (SRLI, Nakhon, Thailand); Prapaiwan Sunwong (SRLI, Nakhon, Thailand); Thakonwat Chanwattana (SRLI, Nakhon, Thailand); Christine Petit-Jean-Genaz (CERN, Meyrin, Switzerland); Volker R.W. Schaa (GSI, Darmstadt, Germany) |
| Online ISBN |
978-3-95450-227-1 |
| Online ISSN |
2673-5490 |
| Received |
06 June 2022 |
| Revised |
11 June 2022 |
| Accepted |
15 June 2022 |
| Issue Date |
16 June 2022 |
| DOI |
doi:10.18429/JACoW-IPAC2022-MOPOST008 |
| Pages |
62-65 |
| Copyright |
 Published by JACoW Publishing under the terms of the Creative Commons Attribution 3.0 International license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI. |
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