Experimental study of slow-rate transition crossing in AGS

Conference · Mon Aug 01 00:00:00 EDT 1994

OSTI ID:10174038

Wei, J; Warner, A; Ahrens, L ^[1]

---

1. and others

The nonlinear momentum-compaction factor {alpha}{sub 1} has been obtained in the AGS by measuring transition energies at different radial orbits using a low-intensity slow-ramped Au{sup 77+} beam. The beam loss during the transition crossing is found to increase with increasing rf voltage, and to decrease with increasing ramping rate, which indicates that the effect of chromatic nonlinearity (Johnson effect) dominates the transition crossing. The experimental measurement of beam loss agrees very well with TIBETAN computer simulation.

• Research Organization: Brookhaven National Lab., Upton, NY (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH00016
• OSTI ID: 10174038
• Report Number(s): BNL-49856; CONF-940618-39; ON: DE94016783
• Resource Relation: Conference: EPAC 94 - 4. European particle accelerator conference,London (United Kingdom),27 Jun - 1 Jul 1994; Other Information: PBD: [1994]
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BROOKHAVEN AGS
BEAM OPTICS
GOLD IONS
COLLIDING BEAMS
PARTICLE LOSSES
BEAM EMITTANCE
MOMENTUM TRANSFER
430200
BEAM DYNAMICS, FIELD CALCULATIONS, AND ION OPTICS