Aggregator

Follow-up Re: North linac LO power seems to be the root of 15 minute oscillations

2 days 5 hours ago
Log Number: 4364311Logbook(s): Entry Makers: settleBody: 

I would point to temperature fluctuations as the culprit.
The MO/LO system appears to be healthy.
Nothing was changed in the MO/LO distribution system between the MCC and NL in recent years.
The rack temperatures nearest the amp that inputs into the drive line is fluctuating at least twice as much as it did last year.

settle

Follow-up Re: Tagger Dropped

2 days 5 hours ago
Log Number: 4364308Logbook(s): Tags: Body: 

Disconnect switch was exercised and power was restored to power supply. Associated EPAS paperwork has been prepared in the event that the supply trips again to troubleshoot. Supply was turned on and restored to Setpoint and handed over to OPS. Not sure if the trip is related to the NMR oscillations on logentry 4364206. DCP will monitor the supply.

kevino

Hall A charge asymmetry

2 days 5 hours ago
Log Number: 4364306Logbook(s): Body: 

Before Apr 23 the charge asymmetry was averaging ~ 58 ppm. Apr 23 was accelerator maintenance day and the beam came back at the midnight.

After the beam came back the asymmetry was averaging ~ 200 ppm. We run the feedback during the run 17398 and brought the asymmetry back to ~0.

PITA voltage is set to - 2914. Earlier it was -3047.

asen

Hall A FFB Restoration - Failed

2 days 6 hours ago
Log Number: 4364295Logbook(s): Entry Makers: ryanmbBody: 

FFB Restoration:

Cavity tripped, needed to re-LEM, etc...

Allsave after above.

Steering through Hall A line looks good after some slight touches (Figure 1).

Opted not to balance box supplies, as this would take nearly all alloted time, and it's already close (Figure 2 shows the difference). Given upcoming pass change, will leave this to happen at that time.

Seemingly, the air core correctors (1C04V at least) are not responding. The set points change, but the readbacks do not (Figure 3).

ryanmb

FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor ***Some node's masks failed to write

2 days 6 hours ago
Log Number: 4364259Logbook(s): Tags: Body: System UN-Masking for: BeamLossMonitor
User: mock
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T0
mock

FSD Masking Tool: Successful System Masking for: BeamLossMonitor ***Some node's masks failed to write

2 days 6 hours ago
Log Number: 4364258Logbook(s): Tags: Body: System Masking for: BeamLossMonitor
User: bbarker
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T0
bbarker

FSD Masking Tool: Successful System UN-Masking for: BeamLossMonitor ***Some node's masks failed to write

2 days 7 hours ago
Log Number: 4364251Logbook(s): Tags: Body: System UN-Masking for: BeamLossMonitor
User: mock
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T0
mock

FSD Masking Tool: Successful System Masking for: BeamLossMonitor ***Some node's masks failed to write

2 days 7 hours ago
Log Number: 4364241Logbook(s): Tags: Body: System Masking for: BeamLossMonitor
User: mock
Areas: All

BeamLossMonitor Devices:
ILM0I07
ILM0L01A
ILM0L01B
ILM0L02
ILM2D00A
ILM2D00B
ILM0L04A
ILM0L04B
ILM0L05
ILM0L06A
ILM0L08
ILM0R01
ILM4D00
ILM0R03
ILM0R04
ILM0R06
ILM0R08
ILM0R09
ILM1L01
ILM1L02
ILM6R08
ILM3S00
ILM7S00
ILM9S00
ILM5S10
ILM5E03
ILM7S01
ILM9A01
ILM3E02
ILM5A01
ILM1A04
ILM1A06
ILM1A09
ILM5A10
ILM1A16
ILM1A19
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T09<B
mock

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