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Title: Space-charge compensation in high-intensity proton rings

Abstract

Recently, it was proposed to use negatively charged electron beams for compensation of beam-beam effects due to protons in the Tevatron collider. The authors show that a similar compensation is possible in space-charge dominated low energy proton beams. The idea has a potential of several-fold increase of the FNAL Booster beam brightness. Best results will be obtained using three electron lenses around the machine circumference, using co-moving electron beam with time structure and profile approximately matched to the proton beam. This technique, if feasible, will be more cost effective than the straightforward alternative of increasing the energy of the injection linac.

Authors:
Publication Date:
Research Org.:
Fermi National Accelerator Lab., Batavia, IL (US)
Sponsoring Org.:
USDOE Office of Energy Research (ER) (US)
OSTI Identifier:
763031
Report Number(s):
FERMILAB-TM-2125
TRN: US0004650
DOE Contract Number:
AC02-76CH03000
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 21 Sep 2000
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; PARTICLE BOOSTERS; ELECTRON BEAMS; FERMILAB TEVATRON; BEAM INJECTION; PROTON BEAMS; SPACE CHARGE; BEAM PROFILES; BEAM SHAPING

Citation Formats

A. Burov, G.W. Foster and V.D. Shiltsev. Space-charge compensation in high-intensity proton rings. United States: N. p., 2000. Web. doi:10.2172/763031.
A. Burov, G.W. Foster and V.D. Shiltsev. Space-charge compensation in high-intensity proton rings. United States. doi:10.2172/763031.
A. Burov, G.W. Foster and V.D. Shiltsev. 2000. "Space-charge compensation in high-intensity proton rings". United States. doi:10.2172/763031. https://www.osti.gov/servlets/purl/763031.
@article{osti_763031,
title = {Space-charge compensation in high-intensity proton rings},
author = {A. Burov, G.W. Foster and V.D. Shiltsev},
abstractNote = {Recently, it was proposed to use negatively charged electron beams for compensation of beam-beam effects due to protons in the Tevatron collider. The authors show that a similar compensation is possible in space-charge dominated low energy proton beams. The idea has a potential of several-fold increase of the FNAL Booster beam brightness. Best results will be obtained using three electron lenses around the machine circumference, using co-moving electron beam with time structure and profile approximately matched to the proton beam. This technique, if feasible, will be more cost effective than the straightforward alternative of increasing the energy of the injection linac.},
doi = {10.2172/763031},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2000,
month = 9
}

Technical Report:

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  • The possibility is examined of achieving space charge neutralization of ion beams within d-c accelerator tubes, particularly with a view to obtaining intense proton beams for injection devices. A design for an accelerating electrode is proposed which should enable neutralization to be obtained over the major part of the trajectory. Some preliminary calculations suggest that a 100 mamp proton beam might be accelerated to 600 kev over about 5 feet without ever exceeding about 1 cm in diameter. (auth)
  • We discuss a recent proposal to use strongly magnetized electron columns created by beam ionization of the residual gas for compensation of space charge forces of high intensity proton beams in synchrotrons and linacs. The electron columns formed by trapped ionization electrons in a longitudinal magnetic field that assures transverse distribution of electron space charge in the column is the same as in the proton beam. Electrostatic electrodes are used to control the accumulation and release of the electrons. Ions are not magnetized and drift away without affecting the compensation. Possible technical solution for the electron columns is presented. Wemore » also discuss the first numerical simulation results for space-charge compensation in the FNAL Booster and results of relevant beam studies in the Tevatron.« less
  • We discuss a recent proposal to use strongly magnetized electron columns created by beam ionization of the residual gas for compensation of space charge forces of high intensity proton beams in synchrotrons and linacs. The electron columns formed by trapped ionization electrons in a longitudinal magnetic field that assures transverse distribution of electron space charge in the column is the same as in the proton beam. Electrostatic electrodes are used to control the accumulation and release of the electrons. Ions are not magnetized and drift away without affecting the compensation. Possible technical solution for the electron columns is presented. Wemore » also discuss the first numerical simulation results for space-charge compensation in the FNAL Booster and results of relevant beam studies in the Tevatron.« less