The Q-Loop: a Function Driven Feedback System for the Betatron Tunes During the LEP Energy Ramp

In normal operation LEP is ramped from injection energy, typically 22 GeV, to energies of over 90 GeV where physics taking takes place. Effective control of the betatron during the ramp is essential t o ensure good transmission of stored current. The LEP Q-loop is a feedback system used to control t...

Descripción completa

Detalles Bibliográficos
Autores principales: Berrig, O E, Jonker, M, Lohmann, K D, Morpurgo, G
Lenguaje:eng
Publicado: 1998
Materias:
Accelerators and Storage Rings
Acceso en línea:http://cds.cern.ch/record/359802
_version_ 1780892637299998720
author Berrig, O E
Jonker, M
Lohmann, K D
Morpurgo, G
author_facet Berrig, O E
Jonker, M
Lohmann, K D
Morpurgo, G
author_sort Berrig, O E
collection CERN
description In normal operation LEP is ramped from injection energy, typically 22 GeV, to energies of over 90 GeV where physics taking takes place. Effective control of the betatron during the ramp is essential t o ensure good transmission of stored current. The LEP Q-loop is a feedback system used to control the tunes during the energy ramp. By following a pre-programmed tune function it provides a means of avoiding dangerous resonances and thus beam loss. The basic components the Q-loop will be described, and operational results presented. Emphasis will be given to the problems encountered and the solut ions found.
id cern-359802
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1998
record_format invenio
spelling cern-3598022023-05-05T13:07:23Zhttp://cds.cern.ch/record/359802engBerrig, O EJonker, MLohmann, K DMorpurgo, GThe Q-Loop: a Function Driven Feedback System for the Betatron Tunes During the LEP Energy RampAccelerators and Storage RingsIn normal operation LEP is ramped from injection energy, typically 22 GeV, to energies of over 90 GeV where physics taking takes place. Effective control of the betatron during the ramp is essential t o ensure good transmission of stored current. The LEP Q-loop is a feedback system used to control the tunes during the energy ramp. By following a pre-programmed tune function it provides a means of avoiding dangerous resonances and thus beam loss. The basic components the Q-loop will be described, and operational results presented. Emphasis will be given to the problems encountered and the solut ions found.CERN-SL-98-039-BIoai:cds.cern.ch:3598021998
spellingShingle Accelerators and Storage Rings
Berrig, O E
Jonker, M
Lohmann, K D
Morpurgo, G
The Q-Loop: a Function Driven Feedback System for the Betatron Tunes During the LEP Energy Ramp
title The Q-Loop: a Function Driven Feedback System for the Betatron Tunes During the LEP Energy Ramp
title_full The Q-Loop: a Function Driven Feedback System for the Betatron Tunes During the LEP Energy Ramp
title_fullStr The Q-Loop: a Function Driven Feedback System for the Betatron Tunes During the LEP Energy Ramp
title_full_unstemmed The Q-Loop: a Function Driven Feedback System for the Betatron Tunes During the LEP Energy Ramp
title_short The Q-Loop: a Function Driven Feedback System for the Betatron Tunes During the LEP Energy Ramp
title_sort q-loop: a function driven feedback system for the betatron tunes during the lep energy ramp
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/359802
work_keys_str_mv AT berrigoe theqloopafunctiondrivenfeedbacksystemforthebetatrontunesduringthelepenergyramp
AT jonkerm theqloopafunctiondrivenfeedbacksystemforthebetatrontunesduringthelepenergyramp
AT lohmannkd theqloopafunctiondrivenfeedbacksystemforthebetatrontunesduringthelepenergyramp
AT morpurgog theqloopafunctiondrivenfeedbacksystemforthebetatrontunesduringthelepenergyramp
AT berrigoe qloopafunctiondrivenfeedbacksystemforthebetatrontunesduringthelepenergyramp
AT jonkerm qloopafunctiondrivenfeedbacksystemforthebetatrontunesduringthelepenergyramp
AT lohmannkd qloopafunctiondrivenfeedbacksystemforthebetatrontunesduringthelepenergyramp
AT morpurgog qloopafunctiondrivenfeedbacksystemforthebetatrontunesduringthelepenergyramp

Ejemplares similares