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Title: Beam-Based Solenoid Compensation for the PEP-II

Abstract

Commissioning the compensation system of the solenoid in the BaBar detector presents a challenging problem due to the complexity of the system, which uses twelve normal quadrupoles and twelve skew quadrupoles in each ring. The setting of these skew quadrupoles needs to be readjusted according to the machine optical parameters since the machines always have some unknown errors. In this paper, we will describe a beam based method to match the coupling and optics in the interaction region to compensate for the optical effects due to the solenoid. The method has been successfully used to find the wrong polarities and the wrong scaling factor of the skew quadrupoles in the early stage of the commissioning. It is being refined to set the skew quadrupoles in the machines in order to reduce the beam size at the interaction point and improve the luminosity of PEP-II.

Authors:
Publication Date:
Research Org.:
Stanford Linear Accelerator Center, Menlo Park, CA (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
12477
Report Number(s):
SLAC-PUB-8236
TRN: US0401888
DOE Contract Number:  
AC03-76SF00515
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 26 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; COMMISSIONING; LUMINOSITY; OPTICS; QUADRUPOLES; SOLENOIDS

Citation Formats

Cai, Yunhai. Beam-Based Solenoid Compensation for the PEP-II. United States: N. p., 1999. Web. doi:10.2172/12477.
Cai, Yunhai. Beam-Based Solenoid Compensation for the PEP-II. United States. doi:10.2172/12477.
Cai, Yunhai. Thu . "Beam-Based Solenoid Compensation for the PEP-II". United States. doi:10.2172/12477. https://www.osti.gov/servlets/purl/12477.
@article{osti_12477,
title = {Beam-Based Solenoid Compensation for the PEP-II},
author = {Cai, Yunhai},
abstractNote = {Commissioning the compensation system of the solenoid in the BaBar detector presents a challenging problem due to the complexity of the system, which uses twelve normal quadrupoles and twelve skew quadrupoles in each ring. The setting of these skew quadrupoles needs to be readjusted according to the machine optical parameters since the machines always have some unknown errors. In this paper, we will describe a beam based method to match the coupling and optics in the interaction region to compensate for the optical effects due to the solenoid. The method has been successfully used to find the wrong polarities and the wrong scaling factor of the skew quadrupoles in the early stage of the commissioning. It is being refined to set the skew quadrupoles in the machines in order to reduce the beam size at the interaction point and improve the luminosity of PEP-II.},
doi = {10.2172/12477},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {8}
}

Technical Report:

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