Corrections to the Fermilab recycler focusing with end shim changes
Conference
·
OSTI ID:783071
- Fermilab
The Recycler Ring Gradient Magnets were designed with end shims which correct the field shape (harmonic components up to 10-pole). A standard correction was employed at one end to correct the average properties. A variable correction was used at the other end to correct individual magnet variations during the fabrication process. Initial Recycler operation revealed that the quadrupole fields did not produce the desired tune. In part, this was due to the sextupole of the end-shim interacting with the curved orbit through the straight magnet. The standard end-shim was replaced on all regular cell gradient magnets. Details of these end corrections and the resulting successful modification of the lattice are described.
- Research Organization:
- Fermi National Accelerator Lab., Batavia, IL (US)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC02-76CH03000
- OSTI ID:
- 783071
- Report Number(s):
- FERMILAB-Conf-01/209-E
- Country of Publication:
- United States
- Language:
- English
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