Cold Startup Swing Shift Update: Beam Stripe at ITV1S01
Reached step 12, hand phasing cavities, in the cold startup procedure before VFV1L27 got stuck in Not Ready, preventing the FSD from clearing. Update while I&C troubleshoots: managed to steer to IPM1L28 and get a round spot at ITV1L22. LEM quads had to be scaled down to ~25% to get a circular spot. Before the vacuum issues began, as of this log were attempting hand phasing in the North Linac, but the ITV1S01 spot is a stripe, making identification of "good" phasing a challenge. Adjusting MQB1L28 was ineffective at rounding out the beam satisfactorily. Work continues...










