WAC Notes July 21 2019

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WAC Notes July 20 2019 << >> WAC Notes July 22 2019

July 21 2019

Slug 9/10

• No Right Arm
• Changed to an_ds1 normalizing BCM
• Still working on pedestals
• S0 Out
• IHWP Out 9 - 3520-3541
• IHWP In 10 - 3542-35-63

Production Run List Swing 2019-07-20/ Owl 21

Start Slug 9 on 3520, junk until 3522

• Calibration - 3523: Aggressive Aq scan
• Calibration/Good - 3524: IA scan - after cuts its good
• Good - 3525: begin production proper
• Good - 3526
• Good - 3527
• Good - 3528
• Good - 3529
• Good - 3530: first 30k events have a beam excursion, this begins a 4 run long beam motion problem that affects the position locks/energy lock (due to FFB being off apparently - see HALOG)
• Good - 3531
• Good - 3532: Noticeable 12 X beam trip recovery issues
• Good - 3533: Halog - End of the long BPM 12 X wandering journey that changed regression slopes
• Good - 3534: Back to normal
• Good - 3535
• Good - 3536
• Good - 3537
• Good - 3538: Trippy beam... OK
• Good - 3539
• Good - 3540: BPM movement... OK
• Good - 3541

Production Run List Owl 2019-07-21

Start Slug 10 on 3542, junk 3542

• Junk - 3542: start of slug, empty
• Good - 3543
• Junk - 3544: BPM saturation
• Good - 3545: BPM saturation resolved
• Good - 3546
• Good - 3547
• Good - 3548: beam movement - begins a large excursion
• Good - 3549: beam movement - ends a large excursion
• Good - 3550
• Good - 3551
• Good - 3552
• Good - 3553: Watch out - very short
• Good - 3554
• Good - 3555: To mitigate beam movement - Perpetually on FFB now - looks good, other than broader BPM Y widths and 4eX looks noisier than its complement
• Good - 3556
• Good - 3557: Double peaked BCMs - 250-300 ppm widths, 0.4 ppm mean Aq
• Good - 3558: "" , 0.1 ppm mean Aq
• Good - 3559: BCM still wide
• Good - 3560: 220 ppm Aq width, 0.4 mean Aq, cuts worked
• Good - 3561
• Good - 3562
• Good - 3563: bcm looks good again now

Non-Production Runs and Bad Runs

• Calibration - 3523: Aggressive Aq scan
• Junk - 3542: start of slug, empty
• Junk - 3544: BPM saturation

Pedestal/Calibrations Updates

• Need to update the other BCMs with prior 50 uA pedestals from Caryn

Issues

• JAPAN now reports missing helicity windows: example, example

Other Status Updates

• Perpetually on FFB now, OPS notes 1, 2, 3
• Accumulated Charge Calculation
• WAC Stability Cut on BPMs analysis procedure