Longitudinal beam-transfer-function measurements at the SLC damping rings

Technical Report · Thu May 01 04:00:00 EDT 1997

DOI:https://doi.org/10.2172/521623· OSTI ID:521623

Minty, M G; Zimmermann, F

A longitudinal single-bunch instability in the damping rings at the Stanford Linear Collider (SLC) is thought to contribute to pulse-to-pulse orbit variations in downstream accelerator sections. To better understand this instability, the authors measured the beam phase and bunch length under harmonic modulations of the rf phase and rf voltage. For small phase-modulations the measured response can be explained by interaction of the beam with the cavity fundamental mode. For larger excitations, they observed bifurcation and hysteresis effects. The response to an rf voltage modulation revealed two peaks near the quadrupole-mode frequency, one of which appears to be related to the longitudinal instability. In this paper they present the experimental results.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (United States)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (United States)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 521623
• Report Number(s): SLAC-PUB--7467; CONF-970503--211; ON: DE97008422
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM DYNAMICS
CAVITY RESONATORS
EXPERIMENTAL DATA
MODULATION
ORBIT STABILITY
OSCILLATION MODES
RF SYSTEMS
STANFORD LINEAR COLLIDER
TRANSFER FUNCTIONS