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Title: Tevatron alignment issues 2003-2004

Abstract

It was observed during the early part of Run II that dipole corrector currents in the Tevatron were changing over time. Measurement of the roll for dipoles and quadrupoles confirmed that there was a slow and systematic movement of the magnets from their ideal position. A simple system using a digital protractor and laptop computer was developed to allow roll measurements of all dipoles and quadrupoles. These measurements showed that many magnets in the Tevatron had rolled more than 1 milliradian. To aid in magnet alignment a new survey network was built in the Tevatron tunnel. This network is based on the use of free centering laser tracker. During the measurement of the network coordinates for all dipole, quadrupole and corrector magnets were obtained. This paper discusses roll measurement techniques and data, the old and new Tevatron alignment network.

Authors:
; ; ; ; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
15011751
Report Number(s):
FERMILAB-CONF-05-040-AD
TRN: US200612%%440
DOE Contract Number:  
AC02-76CH03000
Resource Type:
Conference
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ALIGNMENT; COMPUTERS; DIPOLES; FERMILAB TEVATRON; LASERS; MAGNETS; QUADRUPOLES; Accelerators

Citation Formats

Volk, J T, Annala, J, Elementi, L, Gelfand, N, Gollwitzer, K E, Greenwood, J, Martens, M, Moore, Craig D, Nobrega, A, Russell, A D, Shiltsev, V, Stefanski, R, Sager, T, Syphers, M J, Wojcik, G, and /Fermilab. Tevatron alignment issues 2003-2004. United States: N. p., 2005. Web.
Volk, J T, Annala, J, Elementi, L, Gelfand, N, Gollwitzer, K E, Greenwood, J, Martens, M, Moore, Craig D, Nobrega, A, Russell, A D, Shiltsev, V, Stefanski, R, Sager, T, Syphers, M J, Wojcik, G, & /Fermilab. Tevatron alignment issues 2003-2004. United States.
Volk, J T, Annala, J, Elementi, L, Gelfand, N, Gollwitzer, K E, Greenwood, J, Martens, M, Moore, Craig D, Nobrega, A, Russell, A D, Shiltsev, V, Stefanski, R, Sager, T, Syphers, M J, Wojcik, G, and /Fermilab. Sat . "Tevatron alignment issues 2003-2004". United States. https://www.osti.gov/servlets/purl/15011751.
@article{osti_15011751,
title = {Tevatron alignment issues 2003-2004},
author = {Volk, J T and Annala, J and Elementi, L and Gelfand, N and Gollwitzer, K E and Greenwood, J and Martens, M and Moore, Craig D and Nobrega, A and Russell, A D and Shiltsev, V and Stefanski, R and Sager, T and Syphers, M J and Wojcik, G and /Fermilab},
abstractNote = {It was observed during the early part of Run II that dipole corrector currents in the Tevatron were changing over time. Measurement of the roll for dipoles and quadrupoles confirmed that there was a slow and systematic movement of the magnets from their ideal position. A simple system using a digital protractor and laptop computer was developed to allow roll measurements of all dipoles and quadrupoles. These measurements showed that many magnets in the Tevatron had rolled more than 1 milliradian. To aid in magnet alignment a new survey network was built in the Tevatron tunnel. This network is based on the use of free centering laser tracker. During the measurement of the network coordinates for all dipole, quadrupole and corrector magnets were obtained. This paper discusses roll measurement techniques and data, the old and new Tevatron alignment network.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2005},
month = {1}
}

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