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Title: Progress with collision optics of the Fermilab tevatron collider.

Abstract

Recent advances in the measurement and modeling of the machine parameters and lattice functions at the Tevatron allowed modifications of the collision optics to be performed in order to increase the collider luminosity. As the result, beta functions in the two collision points were decreased from 35cm to 29cm which resulted in {approx} 10% increase of the peak luminosity. In this report we describe the results of optics measurements and corrections. We also discuss planned improvements, including the new betatron tune working point and correction of the beta function chromaticity.

Authors:
; ; ; ; ; ;  [1];
  1. (APS)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC); Universities Research Assoc. Inc.
OSTI Identifier:
973772
Report Number(s):
ANL/ASD/CP-58799
TRN: US1002036
DOE Contract Number:
DE-AC02-06CH11357
Resource Type:
Conference
Resource Relation:
Conference: EPAC 2006; Jun. 26, 2006 - Jun. 30, 2006; Edinburgh, UK
Country of Publication:
United States
Language:
ENGLISH
Subject:
43 PARTICLE ACCELERATORS; BETATRONS; FERMILAB TEVATRON; LUMINOSITY; MODIFICATIONS; OPTICS; SIMULATION

Citation Formats

Valishev, A., Alexahin, Yu., Annala, J., Labedev, V., Nagaslaev, V., Sajaev, V., Accelerator Systems Division, and FNAL. Progress with collision optics of the Fermilab tevatron collider.. United States: N. p., 2006. Web.
Valishev, A., Alexahin, Yu., Annala, J., Labedev, V., Nagaslaev, V., Sajaev, V., Accelerator Systems Division, & FNAL. Progress with collision optics of the Fermilab tevatron collider.. United States.
Valishev, A., Alexahin, Yu., Annala, J., Labedev, V., Nagaslaev, V., Sajaev, V., Accelerator Systems Division, and FNAL. Sun . "Progress with collision optics of the Fermilab tevatron collider.". United States. doi:.
@article{osti_973772,
title = {Progress with collision optics of the Fermilab tevatron collider.},
author = {Valishev, A. and Alexahin, Yu. and Annala, J. and Labedev, V. and Nagaslaev, V. and Sajaev, V. and Accelerator Systems Division and FNAL},
abstractNote = {Recent advances in the measurement and modeling of the machine parameters and lattice functions at the Tevatron allowed modifications of the collision optics to be performed in order to increase the collider luminosity. As the result, beta functions in the two collision points were decreased from 35cm to 29cm which resulted in {approx} 10% increase of the peak luminosity. In this report we describe the results of optics measurements and corrections. We also discuss planned improvements, including the new betatron tune working point and correction of the beta function chromaticity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 2006},
month = {Sun Jan 01 00:00:00 EST 2006}
}

Conference:
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  • Recent advances in the measurement and modeling of the machine parameters and lattice functions at the Tevatron allowed modifications of the collision optics to be performed in order to increase the collider luminosity. As the result, beta functions in the two collision points were decreased from 35cm to 29cm which resulted in {approx}10% increase of the peak luminosity. In this report we describe the results of optics measurements and corrections. We also discuss planned improvements, including the new betatron tune working point and correction of the beta function chromaticity.
  • Fermilab Collider Run II has been ongoing since 2001. During this time peak luminosities in the Tevatron have increased from approximately 10 x 10{sup 30} cm{sup -2}sec{sup -1} to 300 x 10{sup 30} cm{sup 02}sec{sup -1}. A major contributing factor in this remarkable performance is a greatly improved antiproton production capability. Since the beginning of Run II, the average antiproton accumulation rate has increased from 2 x 10{sup 10}{anti p}/hr to about 24 x 10{sup 10}{anti p}/hr. Peak antiproton stacking rates presently exceed 28 x 10{sup 10}{anti p}/hr. The antiproton stacking rate has nearly doubled since 2005. It is thismore » recent progress that is the focus of this paper. The process of transferring antiprotons to the Recycler Ring for subsequent transfer to the collider has been significantly restructured and streamlined, yielding additional cycle time for antiproton production. Improvements to the target station have greatly increased the antiproton yield from the production target. The performance of the Antiproton Source stochastic cooling systems has been enhanced by upgrades to the cooling electronics, accelerator lattice optimization, and improved operating procedures. In this paper, we will briefly report on each of these modifications.« less
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