Bunch-length and beam-timing monitors in the SLC final focus

Conference · Wed Jul 01 00:00:00 EDT 1998

DOI:https://doi.org/10.1063/1.58930· OSTI ID:674782

Zimmermann, F; Yocky, G; Whittum, D H; Seidel, M; Ng, C K; McCormick, D; Bane, K L.F.

During the 1997/98 luminosity run of the Stanford Linear Collider (SLC), two novel RF-based detectors were brought into operation, in order to monitor the interaction-point (IP) bunch lengths and fluctuations in the relative arrival time of the two colliding beams. Both bunch length and timing can strongly affect the SLC luminosity and had not been monitored in previous years. The two new detectors utilize a broad-band microwave signal, which is excited by the beam through a ceramic gap in the final-focus beam pipe and transported outside of the beam line vault by a 160-ft long X-Band waveguide. The authors describe the estimated luminosity reduction due to bunch-length drift and IP timing fluctuation, the monitor layout, the expected responses and signal levels, calibration measurements, and beam observations.

• Research Organization: Stanford Univ., Stanford Linear Accelerator Center, CA (US)
• Sponsoring Organization: USDOE Office of Energy Research, Washington, DC (US)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 674782
• Report Number(s): SLAC-PUB--7898; CONF-980742--; ON: DE98059263
• Resource Type: Conference paper/presentation
• Conference Information: 8. workshop on advanced accelerator concepts, Baltimore, MD (US), 07/06/1998--07/11/1998
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
ACCELERATORS
CALIBRATION
CERAMICS
COLLIDING BEAMS
FLUCTUATIONS
LUMINOSITY
MONITORS
STANFORD LINEAR COLLIDER