Saturday 8/6/11 @08:21 P:SF power supply failed. Investiagion began. Saturday 8/6/11 @08:39 stored beam is less than 100mA. Saturday 8/6/11 @08:40 Top-Up aborted. PS Group personnel called in to fix P:SF power supply. Thank You, Steven LaBuda ASD Operations Group Main Control Room (630) 252-9424