skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: The Tevatron Chromaticity tracker

Abstract

The Tevatron chromaticity tracker (CT) has been successfully commissioned and is now operational. The basic idea behind the CT is that when the phase of the Tevatron RF is slowly modulated, the beam momentum is also modulated. This momentum modulation is coupled transversely via chromaticity to manifest as a phase modulation on the betatron tune. Thus by phase demodulating the betatron tune, the chromaticity can be recovered. However, for the phase demodulation to be successful, it is critical that the betatron tune be a coherent signal that can be easily picked up by a phase detector. This is easily done because the Tevatron has a phase locked loop (PLL) based tune tracker which coherently excites the beam at the betatron tune.

Authors:
;
Publication Date:
Research Org.:
Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
946542
Report Number(s):
FERMILAB-TM-2422-AD
TRN: US0901158
DOE Contract Number:  
AC02-07CH11359
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; BETATRONS; FERMILAB TEVATRON; MODULATION; Accelerators

Citation Formats

Tan, Cheng-Yang, and /Fermilab. The Tevatron Chromaticity tracker. United States: N. p., 2008. Web. doi:10.2172/946542.
Tan, Cheng-Yang, & /Fermilab. The Tevatron Chromaticity tracker. United States. doi:10.2172/946542.
Tan, Cheng-Yang, and /Fermilab. Mon . "The Tevatron Chromaticity tracker". United States. doi:10.2172/946542. https://www.osti.gov/servlets/purl/946542.
@article{osti_946542,
title = {The Tevatron Chromaticity tracker},
author = {Tan, Cheng-Yang and /Fermilab},
abstractNote = {The Tevatron chromaticity tracker (CT) has been successfully commissioned and is now operational. The basic idea behind the CT is that when the phase of the Tevatron RF is slowly modulated, the beam momentum is also modulated. This momentum modulation is coupled transversely via chromaticity to manifest as a phase modulation on the betatron tune. Thus by phase demodulating the betatron tune, the chromaticity can be recovered. However, for the phase demodulation to be successful, it is critical that the betatron tune be a coherent signal that can be easily picked up by a phase detector. This is easily done because the Tevatron has a phase locked loop (PLL) based tune tracker which coherently excites the beam at the betatron tune.},
doi = {10.2172/946542},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {12}
}

Technical Report:

Save / Share: