Difference between revisions of "The HPS Run Wiki"
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* Establish CW 1 pass beam to the Hall-B dump, including checkout of all new beamline components, BPMs, quads, correctors, and harps. | * Establish CW 1 pass beam to the Hall-B dump, including checkout of all new beamline components, BPMs, quads, correctors, and harps. | ||
| − | * Work with MCC crew to establish small size stable beam at the alcove harp - beam parameters | + | * Work with MCC crew to establish small size stable beam at the alcove harp - beam parameters sig X ~ 150 micron, sig Y ~50 micron, with low noise in the downstream halo counters and ecal. |
* Perform harp scans using 2H02 harp. Optimize halo counter voltages as needed. | * Perform harp scans using 2H02 harp. Optimize halo counter voltages as needed. | ||
* Once established, commission the chicane magnet, including a study of noise rates (halo counters + ecal) vs B field. (We may need to run slightly lower than nominal B for our given beam energy to afford adequate clearance to the 3 inch beam pipe connected to the new target assembly.The beam pipe must accommodate both straight through and Frascati bent beams.) | * Once established, commission the chicane magnet, including a study of noise rates (halo counters + ecal) vs B field. (We may need to run slightly lower than nominal B for our given beam energy to afford adequate clearance to the 3 inch beam pipe connected to the new target assembly.The beam pipe must accommodate both straight through and Frascati bent beams.) | ||
