SLAC Magnetic Measurements Date: 10-10-2007 Time: 13:12:51 Project: LCLS Device Type: Undulator Data Type: Serial Number: L143-112000-39 DATASET Number: 1 Tuning Stage: Rough Tuning Run Number: 21 Measurement Type: Z Scans Operator: aww Comment: After changing some gap shims, 5 z-scans for new y-center.