On the image of AGS 3He2+ $$\vec{n}$$0 in the blue
- Brookhaven National Lab. (BNL), Upton, NY (United States)
This note addresses the transport of Helion spin $$\vec{n}$$0 vector, from its periodic orientation in the AGS to RHIC Blue ring injection kicker, via the AGS extraction system and the AtR line. The goal is to investigate optimal injection energy into RHIC, in the matter of Helion spin matching, in the hypothesis of equal warm and cold snake strengths in the AGS. The study uses recently computed OPERA 3-D field maps of the AGS cold snake, including possibility of independent solenoid and helix settings (as discussed in Tech. Note C-A/AP/485), together with the machinery of the AGS and AtR models developed in the stepwise ray-tracing code Zgoubi. Computing tools and methods employed are discussed as well, in order to facilitate possible further checks or investigations. They are however similar to those used in an earlier study regarding the image in RHIC Blue and Yellow of AGS $$\vec{n}$$0 via the AtR in the case of proton beam (Tech. Note C-A/AP/502), which can be referred to for additional details.
- 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:
- 1335415
- Report Number(s):
- BNL-111993-2015-IR; R&D Project: KBCH139; 18031; KB0202011; TRN: US1700836
- Country of Publication:
- United States
- Language:
- English
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