RHIC Startup: Trouble with the RHIC RF. BA1 (Blue acceleration cavity #1) lost a neutralization loop in the power amplifier. It needs to be re-soldered back on. It is fixed and we are back running.
Sextupole trip caused loss of most of the Yellow beam. After running without the Sextupole for an hour, the beam was dumped after polling the experiments.
There is a bad gate interlock (at the switchyard upstream escape gate) that needs tensioning. This will be done behind the first store this morning.
Blue emittance growth problem solved by unplugging a white noise generator in the RF system.
Lifetime at injection is bad and needs to be fixed. Lifetime at store is fluctuating, apparently due to variations in power supplies or orbit.
| Scheduling Physicist: Mike Sivertz | Last updated: |
| Email: sivertz@bnl.gov | |
| Office Phone: 631-344-6102 | |
| Digital Pager: 7528 or 4300 | |
| Home Phone: 631-878-9020 |