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QE Measurement

Recent Log Entries
1 day 1 hour ago
Log Number: 4501295Logbook(s): Body: Spot Location: (13250,19250), Charge: 33.34718799999999

Laser Wavelength Atten Setting Laser Power Current HV PS Current QE PV Updated? Update Time/Reason Not Updated (nm) (W) (uA)</T
msmith

iCalibrate: Hall D

Recent Log Entries
1 day 2 hours ago
Log Number: 4501293Logbook(s): Body: Calibration ParametersHall:DTarget: 1.1x10-3 Al 100umPass: 5.5Note: Calibrated On:2026-May-02 07:48Calibrated By: msmithFile:D-2026-05-02_0748_1.1x10-3_Al_100um_Pass-5.5.hcdIon ChamberExisting Setpoing (rads/hr)New Setpoint (rads/hr)East Wa
msmith

RF Health Check - seeing 3C12 energy instability

Recent Log Entries
1 day 3 hours ago
Log Number: 4501273Logbook(s): Tags: Body: 

Comment: seeing 3C12 energy instability
Beam Conditions:
Total Linac Current (R2XXITOT) = 17.01
Hall A Current (IBC1H04CRCUR2) = 0
Hall B Current (IPM2C24A.IENG) = 16.1239
Hall C Current (IBC3H00CRCUR4) = 5.73
Hall D Current (IBCAD00CRCUR6) = 22.5
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)=51 (<=70mW)
1L04-8 GLDER=210 (>=200) with RF OFF - Check Detuning
1L06-1 GLDER=451 (>=200) with RF OFF - C

samari

xB to 400 nA

Recent Log Entries
1 day 3 hours ago
Log Number: 4501271Logbook(s): Entry Makers: samariBody: 

In order to get them there I had to steer out loss on A2 using 0I01BH corrector, which brought us off of the edge of something charging and discharging in the injector (see fig 2). I also had to adjust the laser phase further to get the new optimal phase. Even given this, I didnt want to just raise the attenuator as we seem to be producing ~10 uA to get 300 nA, so I opened the hall B slit from 16.5 to 23.8. This is a very rough fix until the Inj SME can take a look at the set up tomorrow.

samari

Hall B laser phase adjusted to be centered on the slit

Recent Log Entries
1 day 4 hours ago
Log Number: 4501250Logbook(s): Entry Makers: samariBody: 

Hall B wanted 200 nA but it seemed that our interception on the slit was far too high to try to get there. In steps of .05 degrees I adjusted the laser phase to increase current, then traded the attenuator steps for the laser phase steps, the hall reported no adverse effects, and the gun current produced for hall B was dropped by a factor of two while the current into the hall doubled. I could probably go further but its good enough for now. I'll talk to the Inj SME tomorrow morning to bless the set up.

samari

xC 15uA -> 30uA -> 25uA

Recent Log Entries
1 day 4 hours ago
Log Number: 4501245Logbook(s): Entry Makers: msmithBody: 

After bringing Hall B up we spoke with Hall C to see if they would like us to try to push their current. They requested to try for 30uA which we delivered but they said it was a bit too much for their triggers and asked for 25uA instead.

msmith

Non-radical hall B optics tweaking

Recent Log Entries
1 day 7 hours ago
Log Number: 4501220Logbook(s): Entry Makers: samariBody: 

Very painless to set up the optics. Looking at the viewers i used the 2C05 Y focusing matching quad to round out the spot on 2C21 and 2C24 viewers, taking it 5% stronger than design. Otherwise the new design setpoints seem to have worked like a charm! I might make some tweaks once the target is put in to get it cleaner through the cell.

samari

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MCC Crew Chief Blackshaw
MCC Operators Thomas, Barker
Program Deputy Drury
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