Aggregator

C beam appearing on 3H10 VL viewer, but not tune mode dump. Much better transmission, though

6 days 16 hours ago
Log Number: 4480736Logbook(s): Entry Makers: alexsBody: 

After initially steering the C line to as close to zero on the BPMs as reasonable, we found we couldn't see the beam on the dump viewer. Once the viewer situation was worked out, we also initially couldn't see the beam even on the viewer limited 3H10 viewer. After much confusion, we were finally able to get the beam on the viewer with the 3H02V corrector (3H05V didn't have enough strength or leverage to pull it up on the viewer). Despite finding the beam, when we swapped to tune mode, it's nowhere to be found on the dump viewer in neither the CW nor Tune settings.

alexs

Hall C will take a controlled access tomorrow starting with 8 am

6 days 16 hours ago
Log Number: 4480729Logbook(s): Entry Makers: simonaBody: 

The Hall C RC called me this evening to schedule a controlled access tomorrow morning to troubleshoot a new issue with one of the HMS magnets (https://logbooks.jlab.org/entry/4480718).
I spoke with David Hamlette and he arranged for a RadCon team to show up tomorrow at 8 am to start the survey of Hall C. This will be a full survey to put the hall in controlled access.

simona

RF Health Check - 6 degree NL GP drift

6 days 17 hours ago
Log Number: 4480725Logbook(s): Tags: Body: 

Comment: 6 degree NL GP drift
Beam Conditions:
Total Linac Current (R2XXITOT) = 0.0414
Hall A Current (IBC1H04CRCUR2) = 0
Hall B Current (IPM2C24A.IENG) = 0.109375
Hall C Current (IBC3H00CRCUR4) = 1.38
Hall D Current (IBCAD00CRCUR6) = 0
BSY Current (IBC4C00CRCUR5) = 0
INJ Energy (MMSINJEGAIN) = 38.9312
NL Energy (MMSLIN1EGAIN) = 345
SL Energy (MMSLIN2EGAIN) = 345

Gradient Problems:
0L02-7 Klystron Cathode Current (KCCU)=0.00384521 (<=0.7A)
0L03-1 Local Oscillator Power (LOPW)=55.4 (<=70mW)
1L04-8 GLDER=207 (>=200) with RF OFF - Check Detuning
1L06-1 GLDER=453 (>=200) with RF OFF - Check Detu

alexs

FSD Masking Tool: Successful System Masking for: BeamLossMonitor

6 days 17 hours ago
Log Number: 4480711Logbook(s): Tags: Body: System Masking for: BeamLossMonitor
User: alexs
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<
alexs

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MCC Crew Chief Blackshaw
MCC Operators Schoene, Janak
Program Deputy Malace
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