Spin Tracking of Polarized Protons in the Main Injector at Fermilab

Conference · Fri Jul 01 00:00:00 EDT 2016

OSTI ID:1280868

Xiao, M. ^[1]; Lorenzon, W. ^[2]; Aldred, C. ^[2]

---

1. Fermilab
2. Michigan U.

The Main Injector (MI) at Fermilab currently produces high-intensity beams of protons at energies of 120 GeV for a variety of physics experiments. Acceleration of polarized protons in the MI would provide opportunities for a rich spin physics program at Fermilab. To achieve polarized proton beams in the Fermilab accelerator complex, shown in Fig.1.1, detailed spin tracking simulations with realistic parameters based on the existing facility are required. This report presents studies at the MI using a single 4-twist Si-berian snake to determine the depolarizing spin resonances for the relevant synchrotrons. Results will be presented first for a perfect MI lattice, followed by a lattice that includes the real MI imperfections, such as the measured magnet field errors and quadrupole misalignments. The tolerances of each of these factors in maintaining polariza-tion in the Main Injector will be discussed.

• Research Organization: Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP)
• DOE Contract Number: AC02-07CH11359
• OSTI ID: 1280868
• Report Number(s): FERMILAB-CONF-16-118-AD; 1478945
• Resource Relation: Conference: 57th ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams, Malmo, Sweden, 07/03-07/08/2016
• Country of Publication: United States
• Language: English