SLAC Magnetic Measurements Date: 08-15-2011 Time: 15:37:40 Project: LCLS Device Type: Undulator Data Type: Serial Number: A1-ANL DATASET Number: 3 Tuning Stage: Rough Tuning Run Number: 24 Measurement Type: Z Scans Operator: YL Comment: mirror plate test; gap = 9mm, plate = 9cm