Recent Log Entries

Injector orbit lock driving things off through chicane

Log Number: 3826235Logbook(s): Entry Makers: michaelmBody: 

Happening with all 4 beams at full current, with a single beam (say D) it converged quickly in tune mode. Probably a consequence of the all gang phase changes to 0L04 I'm guessing since it registers on the low energy side and is taxing the Injector energy lock. With the orbit lock running we are right on the edge of 0R08 BLM trips on when things converge... I let it drive most of the way in (as it was helpful to the Compton rate) and have suspended the INJ orbit lock for now.

FSD Masking Tool: Successful System Masking for: BeamLossMonitor

Log Number: 3826231Logbook(s): Tags: Body: System Masking for: BeamLossMonitor
User: michaelm
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
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T09
ILM4C01
ILM4C02
ILM4C03
ILM1C

Net phase change to 0L04: +9.1 degrees?

Log Number: 3826225Logbook(s): Entry Makers: michaelmBody: 

Present setting is an optimization of the Hall A compton rate and also significantly improved the rate of the Hall C transport ion chamber... that said the change this week in the 0L04 gang phase has been +9.1 degrees total. I'm not sure when the last time 0L04 was crested was, but this does prompt the 'How much is too much at this energy?' question. We may want to crest the module and dial the correction in again at a convenient time to the program with more eyes just to make sure we are running exactly where we want to be...

+1.2 degrees bunch compression added for Hall A Compton Rate

Log Number: 3826178Logbook(s): Entry Makers: michaelmBody: 

Fig. 1: NL on crest - no change
Fig. 2: SL on crest - no change
Fig. 3: Bunch Compression: 0L04 Gang phase +1.2 degrees - some help; not much benefit past that.
Fig. 4: Path length (as found)
Fig 5: Path length - Corrected.
Fig. 6: NL gang phase +0.1 degrees to crest
Fig. 7: SL gang phase: -0.3 degrees to crest

Nte effect:
Start:
DS1: 6058
DS2: 7372

End:
DS1: ~5450
DS2: ~6600

~10% net reduction

FSD Masking Tool: Successful System Masking for: BeamLossMonitor

Log Number: 3826169Logbook(s): Tags: Body: System Masking for: BeamLossMonitor
User: michaelm
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
ILM3R10
ILM9R07
ILM1R09
ILM2L03
ILM5R10
ILM5R05
ILM2L01
ILM2T09
ILM8T09
ILM4C01
ILM4C02
ILM4C03
ILM1C

Feature request: NL Energy lock zone identification

Log Number: 3826152Logbook(s): Entry Makers: michaelmBody: 

Feature request: Please correct the NL energy lock designation pink square/dot for the Tools screen as well as the RF captain. It seems to either not be functional or hidden by screen layering. It definitely is an aid for quickly designated which of the 4 possibilities it could be. (1L18-21)

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