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000205487 0247_ $$2datacite_doi$$a10.3204/PUBDB-2015-00051
000205487 0247_ $$2doi$$a10.18429/JACoW-IPAC2014-WEPRO035
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000205487 041__ $$aEnglish
000205487 1001_ $$0P:(DE-H253)PIP1008615$$aVagin, Pavel$$b0$$eCorresponding Author
000205487 1112_ $$0C14-06-16$$2inspire$$aInternational Particle Accelerator Conference IPAC$$cDresden$$d2014-06-15 - 2014-06-20$$gIPAC 2014$$wGermany
000205487 245__ $$aRadiation Damage of Undulators at PETRA III
000205487 260__ $$aGeneva$$bJACoW, Geneva, Switzerland$$c2014
000205487 29510 $$aProceedings of the 5th Int. Particle Accelerator Conf., IPAC2014, Dresden, Germany
000205487 300__ $$a2019-2021
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000205487 520__ $$aIn the new octant of PETRA III, there are 14 undulator beamlines covering photon energy range from 0.3keV to 150keV. There are also 80m of damping wigglers in order to achieve a low emittance of 1nmrad. Some of these devices, operating at PETRAIII since 2008, accumulated totalradiation doses of about 100kGy.Visible corrosion at the magnet structures of some permanent magnet undulators setting in after a few years and a high dose rate measured regularly by thermoluminescent dosimeters (TLDs) gave reason to inspect the magnetic field of all insertion devices in the PETRA tunnel. This paper presents details of the magnetic field degradation caused byradiation damage to the undulator magnets. For some undulators changes in the spectral properties of the generated light were observed. It was measured with different taper settingsin order to partly compensate the nonuniform demagnetization along the structure. The results are compared with the data from the sFLASH undulators and measurements of special 3 pole "sacrificial" undulator, installed in FLASH. Its magnetic field is periodically remeasured and shows field amplitude decrease of 1% per 16kGy accumulated dose.
000205487 536__ $$0G:(DE-HGF)POF3-6G3$$a6G3 - PETRA III (POF3-622)$$cPOF3-622$$fPOF III$$x0
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000205487 650_7 $$2Other$$aAccelerator Physics
000205487 650_7 $$2Other$$a02 Synchrotron Light Sources and FELs
000205487 650_7 $$2Other$$aT15 Undulators and Wigglers
000205487 693__ $$0EXP:(DE-H253)PETRAIII(machine)-20150101$$1EXP:(DE-H253)PETRAIII-20150101$$5EXP:(DE-H253)PETRAIII(machine)-20150101$$aPETRA III$$eFacility (machine) PETRA III$$x0
000205487 7001_ $$0P:(DE-H253)PIP1014763$$aBilani, Orkidia$$b1
000205487 7001_ $$0P:(DE-H253)PIP1000495$$aSchoeps, Andreas$$b2$$udesy
000205487 7001_ $$0P:(DE-H253)PIP1015712$$aTripathi, Sumit$$b3
000205487 7001_ $$0P:(DE-H253)PIP1001322$$aVielitz, Thorsten$$b4
000205487 7001_ $$0P:(DE-H253)PIP1001383$$aTischer, Markus$$b5
000205487 773__ $$a10.18429/JACoW-IPAC2014-WEPRO035
000205487 7870_ $$0PUBDB-2017-144829$$aPetit-Jean-Genaz, Christine et.al.$$dGeneva : JACoW, 2014$$iIsMemberOf$$r$$tParticle accelerator
000205487 8564_ $$uhttp://accelconf.web.cern.ch/AccelConf/IPAC2014/papers/wepro035.pdf
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000205487 9141_ $$y2014
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