Beta* and beta-waist measurement and control at RHIC

Conference · Mon May 04 00:00:00 EDT 2009

OSTI ID:962185

Ptitsyn, V; Della Penna, A; Litvinenko, V N; Malitsky, N; Satogata, T

During the course of last RHIC runs the beta-functions at the collision points ({beta}*) have been reduced gradually to 0.7m. In order to maximize the collision luminosity and ensure the agreement of the actual machine optics with the design one, more precise measurements and control of {beta}* value and {beta}-waist location became necessary. The paper presents the results of the implementation of the technique applied in last two RHIC runs. The technique is based on well-known relation between the tune shift and the beta function and involves precise betatron tune measurements using BBQ system as well as specially developed knobs for {beta}-waist location control.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: Doe - Office Of Science
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 962185
• Report Number(s): BNL-81850-2009-CP; R&D Project: 18031; KB0202011; TRN: US0902806
• Resource Relation: Conference: Particle Accelerator Conference (PAC09); Vancouver, B.C., Canada; 20090504 through 20090508
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
BETATRONS
DESIGN
IMPLEMENTATION
LUMINOSITY
OPTICS