InternalExperience with Commissioning of the LCLS Undulator System
(XFEL WPG3 Meeting)
Speaker: Heinz-Dieter Nuhn (SLAC / LCLS)
Date: Tuesday, 15 June 2010, 14:30-16:00
Location: room AER19/3.11
The LCLS X-ray FEL has achieved its 1.5-Angstrom lasing and saturation goals upon first trial. This was achieved with an extensive effort of pre-beam checkout, both traditional and beam-based component alignment techniques, and a high electron beam brightness. The very tight tolerances on the straightness of the electron beam trajectory (< 5 µm) demanded by the X-ray FEL process have been met through a beam-based alignment (BBA) method, which is implemented using large electron energy variations and sub-micron cavity beam position monitors (BPM). Magnet damage is minimize by keeping radiation levels at very low levels through a complex interlock system (MPS).
The talk will present some of the results of the undulator commissioning process.
