TY - CONF AU - Schoeps, Andreas AU - Bilani, Orkidia AU - Ramm, Torsten AU - Tripathi, Sumit AU - Vagin, Pavel AU - Tischer, Markus TI - Design and Commissioning of the FLASH2 Undulators CY - Geneva PB - JACoW, Geneva, Switzerland M1 - PUBDB-2015-00045 SN - 978-3-95450-132-8 SP - 2007-2009 PY - 2014 AB - This paper reports about aspects of design, manufacturing, and commissioning of the 12 FLASH2 variable gap undulator segments. The accuracy of gap drive and encoder systems was tested by magnetic measurements; changes in the phase error proved to be a highly sensitive probe to verify a reproducibility of 1 μm. After magnetic tuning of the IDs, the remaining gap dependence in the field integrals could be successfully compensated by corrector coils. Inconsiderate handling of components during assembling necessitated an elaborate demagnetisation process before the tuning could start. T2 - International Particle Accelerator Conference IPAC CY - 15 Jun 2014 - 20 Jun 2014, Dresden (Germany) Y2 - 15 Jun 2014 - 20 Jun 2014 M2 - Dresden, Germany KW - Accelerator Physics (Other) KW - 02 Synchrotron Light Sources and FELs (Other) KW - T15 Undulators and Wigglers (Other) LB - PUB:(DE-HGF)8 ; PUB:(DE-HGF)7 DO - DOI:10.18429/JACoW-IPAC2014-WEPRO031 UR - https://bib-pubdb1.desy.de/record/205481 ER -