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The OPS DRVHs for the following cavities have been updated: 1L03-6
The OPS DRVHs for the following cavities have been updated:
1L03-6
Username: anthony
Date/Time: 02-07-26_17:36:15
RF Status: Good
Tuner Status: Good
Comment: DRVH=6.000 ODVH changed due to Special Instructions/Program Requirements
Previous OPS DRVH: 0
Special Instructions:
The OPS DRVHs for the following cavities have been updated: 1L03-5
The OPS DRVHs for the following cavities have been updated:
1L03-5
Username: anthony
Date/Time: 02-07-26_16:58:11
RF Status: Good
Tuner Status: Good
Comment: DRVH=5.000 ODVH changed due to Special Instructions/Program Requirements
Previous OPS DRVH: 5
Special Instructions:
The OPS DRVHs for the following cavities have been updated: 1L03-5
The OPS DRVHs for the following cavities have been updated: 1L03-5
"Starting NL Gradient Ramp"
BSList #115784: parasitic spin rotator - study unfinished
Flipping one counterwound solenoid at a time to see if one of them is responsible for the spin precession around the longitudinal axis that seems to originate between HWien and Mott.
Ali is logging the Mott results separately.
VWien=-90, flipper +/-, HWien=0.
MFX0I01: originally at -220 (#10105 IN, #10106 OUT); trying +220 (#10107 IN, #10108 OUT) and then another run at -220 as a sanity check (#10109 IN, #10110 OUT)
MFA0I03: difficult to flip sign without messing up the orbit in the chopper.
Changed plans to turning the chopper off and comparing.
Autolog restore
2uA, V Wien-90, Inverted & Not-Inverted, Chopper On/OFF
2uA, IHWP IN, V Wien-90, MFXOIO1 Inverted
Run Number 10107
Mott Asym UD (%) = -0.405894 +/- 0.286652
Mott Asym LR (%) = -33.9631 +/- 0.279331
2uA, IHWP OUT, V Wien-90, MFXOIO1 Inverted
Run Number 10108
Mott Asym UD (%) = 1.18891 +/- 0.293621
Mott Asym LR (%) = 33.9136 +/- 0.283401
2uA, IHWP IN, V Wien-90, MFXOIO1 Not-Inverted
Run Number 10109
Mott Asym UD (%) = -0.552629 +/- 0.291402
Mott Asym LR (%) = -34.1934 +/- 0.283492
2uA, IHWP OUT, V Wien-90, MFXOIO1 Not-Inverted
Run Number 10110
Mott Asym UD (%) = 0.692711 +/- 0.29237
Mott Asym LR (%) = 34.29
Operator SIGN IN
Paged CIS xA Laser PA alarm
CREW CHIEF SIGN IN
THOMAS JEFFERSON NATIONAL ACCELERATOR FACILITY
ACCELERATOR OPERATIONS CREW CHIEF SIGN IN FORM
Date : 02-07-26
Time : 15:27:29
Day : Saturday
Shift : Swing
Crew Chief : Richardson
Program Deputy: Mock
Team : X
Arm : RADCON
Designated SSO: Anthony
LERF Operator:
Operators : Anthony
This stamp certifies that the above Crew Chief has read/reviewed/received the following:
V Wien Calibration data
2uA,IHWP=IN, V Wien+90, BDL=3882, V=18038V
Run Number 10086
Mott Asym UD (%) = 1.18451 +/- 0.296141
Mott Asym LR (%) = 34.3181 +/- 0.277834
2uA,IHWP=OUT, V Wien+90, BDL=3882, V=1803818038V
Run Number 10087
Mott Asym UD (%) = -0.83796 +/- 0.296892
Mott Asym LR (%) = -34.0896 +/- 0.278426
2uA,IHWP=IN, V Wien+70, BDL=3029, V=14030V
Run Number 10088
Mott Asym UD (%) = 0.780986 +/- 0.295864
Mott Asym LR (%) = 33.0139 +/- 0.2805
2uA,IHWP=OUT, V Wien+70, BDL=3029, V=14030V
Run Number 10090
Mott Asym UD (%) = -1.4588 +/- 0.296595
Mott Asym LR (%) = -33.0395 +
Mott beam setup and checkout
Starting from Ops setup, but with HWien=0, VWien=90 (nominal), flipper +/-.
Opened Mott valve (unmasked).
Unmasked FSD bit for IBC0L02 to trip above 5 uA CW (calibrated by reading counts in expert screen; trip limit at 3500 counts).
Set up beam to Mott target, p=5.5 MeV/c, booster crested.
Allsave #26568.
Ali is running CODA from my account on another machine to learn the steps.
Figure 1: RTP settings.
Run #10078, IHWP OUT:
Mott Asym UD (%) = -1.11579 +/- 0.582587
Mott Asym LR (%) = -27.9595 +/- 0.556058
Run #10079, IHWP IN:
Mott Asym UD (%) = 1.1189 +/- 0.664762
Mott Asym LR
QuickPic - New RTP Cell Settings for Mott Measurements
Autolog save
1L23 Dropping out of HV
Every source of information I can find indicates that we can turn this zone on (SRM, ATLis 118909, RF HCO Spreadsheet, and so on), AND we have turned this zone on an ramped it up in this start up period already (see attached ELog). It was off when I came in this morning so, with all those checks bolstering my confidence I attempted to turn it back on. However, it tripped out of HV almost immediately afterwards.
It looks like earlier this week cav 3 was unbypassed due to its Sorenson being replaced. I'm wondering if this has anything to do with it tripping out of HV.
Helicity Control Boards: HG001, HG002, and HG003 returned back to Fast Electronics Group
Autolog restore
Masked VBV3D00A and VBV5D00
We will not be sending beam down either of these lines for today's beam studies. Additionally, VBV0L01B is on another unmasked channel so we will still be alerted if this valve closes.
Making this log because, while we have standing orders indicating that masking VBV3D00 is okay, I couldn't find any documentation on VBV5D00. According to the Injector Quick reference doc, VBV5D00 is disconnected at this time. As such, it may make sense to add VBV5D00 to ABIL.










