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Broadband impedance of azimuthally symmetric devices in RHIC

Conference ·
OSTI ID:6338327
The interaction between the beam and its environment leads to beam instabilities, and is characterized by coupling impedance. The longitudinal coupling impedance of some RHIC devices with azimuthal symmetry such as bellows, pipe transition, gate valve and collimator have been calculated numerically using the time domain code TBCI. The objective is to keep the broadband impedance below a threshold so that it satisfies the microwave stability criteria; and make sure there is no contribution to narrowband impedance from any of these structures.
Research Organization:
Brookhaven National Lab., Upton, NY (United States)
Sponsoring Organization:
DOE; USDOE, Washington, DC (United States)
DOE Contract Number:
AC02-76CH00016
OSTI ID:
6338327
Report Number(s):
BNL-48375; CONF-930511--72; ON: DE93014329
Country of Publication:
United States
Language:
English