Speaker
Georg Gassner
(SLAC National Accelerator Laboratory)
Description
Up to now the linear accelerator (Linac) alignment at SLAC was based on fiducials on the girders of the Linac. These were directly tied to the Linac Laser Alignment System which had a target at every subsector (270 targets for the 3048m length). For the new LCLS II a superconducting Linac will be installed in the first third of the accelerator housing and the Linac light pipe will be removed from these sectors. This makes two procedures necessary. For the LCLS II area, the reference monuments must be transferred from the girders to the walls and floor of the accelerator housing. For the last two thirds of the accelerator, the Linac Laser Alignment System optics have to be modified. This paper will report on these two activities.
Author
Georg Gassner
(SLAC National Accelerator Laboratory)
Co-author
Mr
Michael Gaydosh
(SLAC National Accelerator Laboratory)
