000309980 001__ 309980
000309980 005__ 20211110135310.0
000309980 0247_ $$2datacite_doi$$a10.3204/PUBDB-2016-04121
000309980 037__ $$aPUBDB-2016-04121
000309980 041__ $$aEnglish
000309980 0881_ $$aDESY-M-02-01T
000309980 088__ $$2DESY$$aDESY-M-02-01T
000309980 1001_ $$0P:(DE-HGF)0$$aHoffstaetter, G. H.$$b0$$eCorresponding author
000309980 1112_ $$aThe 8th European Particle Accelerator Conference$$cParis$$d2002-06-03 - 2002-06-07$$gEPAC2002$$wFrance
000309980 245__ $$aMeasurement of HERA's Central RF Frequency
000309980 260__ $$c2002
000309980 300__ $$a398-400
000309980 3367_ $$2ORCID$$aCONFERENCE_PAPER
000309980 3367_ $$033$$2EndNote$$aConference Paper
000309980 3367_ $$2BibTeX$$aINPROCEEDINGS
000309980 3367_ $$2DRIVER$$aconferenceObject
000309980 3367_ $$0PUB:(DE-HGF)29$$2PUB:(DE-HGF)$$aReport$$mreport
000309980 3367_ $$2DataCite$$aOutput Types/Conference Paper
000309980 3367_ $$0PUB:(DE-HGF)8$$2PUB:(DE-HGF)$$aContribution to a conference proceedings$$bcontrib$$mcontrib$$s1476340159_18564
000309980 520__ $$aFor the HERA luminosity upgrade the horizontal emittance of the electron beam was reduced from 41 nm to 22 nm firstly by an increased quadrupole focusing in the arcs’ FODO structures and secondly by a change of the damping partition numbers by means of an rf frequency shift.The stronger focusing alone, which increases the phase advance per FODO cell from 60 to 72 degrees, would only reduce the emittance to 35 nm. It was therefore critical for the luminosity upgrade to make sure that there is sufficient room in the damping window for increasing the frequency of HERA’s 500 MHz system by the required 300 Hz. For this purpose HERA’s rf frequency had to be compared to the central frequency of the ring, for which the design orbit goes through the center of the quadrupoles. Since the accuracy of most methods of finding the central frequency is quite limited, we have used 7 different methods. Their results and their accuracies are compared in this paper.
000309980 536__ $$0G:(DE-H253)POF1-HERA-20130405$$aFacility (machine) HERA (POF1-HERA-20130405)$$cPOF1-HERA-20130405$$fPOF I$$x0
000309980 588__ $$aDataset connected to INSPIRE
000309980 650_7 $$2INSPIRE$$atalk: Paris 2002/06/03
000309980 650_7 $$2INSPIRE$$aelectron p: storage ring
000309980 650_7 $$2INSPIRE$$aluminosity: upgrade
000309980 650_7 $$2INSPIRE$$aRF system: resonance
000309980 650_7 $$2INSPIRE$$ameasurement: resonance
000309980 650_7 $$2INSPIRE$$aquadrupole lens: special focusing
000309980 650_7 $$2INSPIRE$$abeam: absorption
000309980 650_7 $$2INSPIRE$$abeam emittance
000309980 650_7 $$2INSPIRE$$aDESY HERA Stor
000309980 693__ $$0EXP:(DE-H253)HERA(machine)-20150101$$1EXP:(DE-588)4159571-3$$5EXP:(DE-H253)HERA(machine)-20150101$$aHERA$$eFacility (machine) HERA$$x0
000309980 7001_ $$0P:(DE-H253)PIP1002391$$aHolzer, B.$$b1
000309980 7001_ $$0P:(DE-HGF)0$$aWilleke, F.$$b2
000309980 7001_ $$0P:(DE-H253)PIP1006314$$aMeseck, A.$$b3$$udesy
000309980 7870_ $$0PHPPUBDB-23946$$aAgapov, I. V. et.al.$$d2002$$iIsPartOf$$rDESY-M-02-01$$tContributions to EPAC2002
000309980 8564_ $$uhttps://bib-pubdb1.desy.de/record/309980/files/MOPLE038.pdf$$yOpenAccess
000309980 8564_ $$uhttps://bib-pubdb1.desy.de/record/309980/files/MOPLE038.gif?subformat=icon$$xicon$$yOpenAccess
000309980 8564_ $$uhttps://bib-pubdb1.desy.de/record/309980/files/MOPLE038.jpg?subformat=icon-1440$$xicon-1440$$yOpenAccess
000309980 8564_ $$uhttps://bib-pubdb1.desy.de/record/309980/files/MOPLE038.jpg?subformat=icon-180$$xicon-180$$yOpenAccess
000309980 8564_ $$uhttps://bib-pubdb1.desy.de/record/309980/files/MOPLE038.jpg?subformat=icon-640$$xicon-640$$yOpenAccess
000309980 8564_ $$uhttps://bib-pubdb1.desy.de/record/309980/files/MOPLE038.pdf?subformat=pdfa$$xpdfa$$yOpenAccess
000309980 909CO $$ooai:bib-pubdb1.desy.de:309980$$pdnbdelivery$$pdriver$$pVDB$$popen_access$$popenaire
000309980 9101_ $$0I:(DE-HGF)0$$6P:(DE-H253)PIP1002391$$aExternes Institut$$b1$$kExtern
000309980 9101_ $$0I:(DE-588b)2008985-5$$6P:(DE-H253)PIP1006314$$aDeutsches Elektronen-Synchrotron$$b3$$kDESY
000309980 9131_ $$0G:(DE-HGF)POF1-510$$1G:(DE-HGF)POF1-500$$2G:(DE-HGF)POF1$$9G:(DE-H253)POF1-HERA-20130405$$aDE-H253$$bProgrammorientierte Förderung I$$lStruktur der Materie$$vElementarteilchenphysik$$x0
000309980 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess
000309980 9201_ $$0I:(DE-H253)M_-2012_-20130307$$kM(-2012)$$lM-Bereich$$x0
000309980 980__ $$acontrib
000309980 980__ $$aVDB
000309980 980__ $$aUNRESTRICTED
000309980 980__ $$areport
000309980 980__ $$aI:(DE-H253)M_-2012_-20130307
000309980 9801_ $$aFullTexts