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Pumping slots: impedances and power losses

Abstract

Contributions of pumping slots to the beam coupling impedances and power losses in a B-factory ring are considered. While their leading contribution is to the inductive impedance, for high-intensity machines with short bunches like e{sup +}e{sup -} B-factories the real part of the impedance and related loss factors are also important. Using an analytical approach we calculate the coupling impedances and loss factors due to slots in a ring with an arbitrary cross section of the vacuum chamber. Effects of the slot tilt on the beam impedance are also considered, and restrictions on the tilt angle are derived from limitations on the impedance increase. The power leakage through the slots is discussed briefly. The results are applied to the KEK B-factory. (author)
Authors:
Kurennoy, S [1] 
  1. Maryland Univ., College Park, MD (United States). Dept. of Physics
Publication Date:
Aug 01, 1996
Product Type:
Conference
Report Number:
KEK-PROC-96-6; CONF-9506279-
Reference Number:
SCA: 430400; PA: JPN-97:003158; EDB-97:062625; SN: 97001772731
Resource Relation:
Conference: CEIBA95: international workshop on collective effects and impedance for B-factories, Tsukuba (Japan), 12-17 Jun 1995; Other Information: PBD: Aug 1996; Related Information: Is Part Of Proceedings of the international workshop on collective effects and impedance for B-factories (CEIBA95); Chin, Yongho [ed.]; PB: 531 p.
Subject:
43 PARTICLE ACCELERATORS; STORAGE RINGS; VACUUM SYSTEMS; COLLIDING BEAMS; ELECTRON BEAMS; POSITRON BEAMS; B MESONS; ELECTRIC IMPEDANCE; ELECTROMAGNETIC FIELDS; COUPLING; POWER LOSSES; BEAM DYNAMICS; VACUUM PUMPS
OSTI ID:
461168
Research Organizations:
National Lab. for High Energy Physics, Tsukuba, Ibaraki (Japan)
Country of Origin:
Japan
Language:
English
Other Identifying Numbers:
Other: ON: DE97729548; TRN: JP9703158
Availability:
OSTI as DE97729548
Submitting Site:
JPN
Size:
pp. 174-188
Announcement Date:

Citation Formats

Kurennoy, S. Pumping slots: impedances and power losses. Japan: N. p., 1996. Web.
Kurennoy, S. Pumping slots: impedances and power losses. Japan.
Kurennoy, S. 1996. "Pumping slots: impedances and power losses." Japan.
@misc{etde_461168,
title = {Pumping slots: impedances and power losses}
author = {Kurennoy, S}
abstractNote = {Contributions of pumping slots to the beam coupling impedances and power losses in a B-factory ring are considered. While their leading contribution is to the inductive impedance, for high-intensity machines with short bunches like e{sup +}e{sup -} B-factories the real part of the impedance and related loss factors are also important. Using an analytical approach we calculate the coupling impedances and loss factors due to slots in a ring with an arbitrary cross section of the vacuum chamber. Effects of the slot tilt on the beam impedance are also considered, and restrictions on the tilt angle are derived from limitations on the impedance increase. The power leakage through the slots is discussed briefly. The results are applied to the KEK B-factory. (author)}
place = {Japan}
year = {1996}
month = {Aug}
}