Run4, quartet, no reporting delay, 0.25 uA to FCup2
Opened the cave and removed the waveplate and linear polarizer used to make a charge asymmetry
Run5, 1 uA to FCup2, quartet and no reporting delay. See how clean the beam current signal is without the elements used to make the charge asymmetry?
Day #49, Week 11 Day 1, Plans:
Tunnel --
* Opportunistic cable pulls (CIS/EES-IC)
InjSB --
* Wien upgrade work, HV cabling, IN01B{00-03}
(Windham, Dela Cruz)
* CIS Rack work, IN01B{00-05} (Windham)
* Viewer cable terminations, IN03B07 (Norris)
Test Lab --
* Y-chamber prep for move into tunnel (Stutzman)
* Preparing for V-wien HV testing at UITF this week
(Hernandez-Garcia)
* Prebuncher RF frequency checks (Adderley, Wissman)
* A1/A2 cube assembly (Adderley)
Toolbox attended by: Hofler, Dela Cruz, Hernandez-
Garcia, Croke, Grames, Cole, Stutzman, Adderley,
Suleiman, Windham, Zhang
Tsuneo's plans to use the beams this Monday for the following purposes.
We've not run DAQ for more than 1 week due to the network traffic jam issues.
Would like to test how DAQ affects IBC network issues.
(1) Charge asymmetry (~40 Hz to DAQ) --- 3 hours or so (10 AM to 1 PM; time is just an idea)
Use keV beams to BPM and take scaler data to DAQ with the following conditions.
(a) Optical element IN (0 window delay) 1 micro A: 10 minutes
(b) Optical element IN (0 window delay) 0.5 micro A: 20 minutes
(c) Optical element IN (8 windows delay) 1 micro A: 10 minutes
Stop beams and get int
UITF locked up, gun ramping. Today we will check out the DAQ using an artifical charge asymmetry created using optical elements on the laser table, and then we will zero the charge asymmetry (i.e., remove the optical elements creating the charge asymmetry) and look for a physics asymmetry, beam on HD target. Tsuneo is the PI today.
At the last trip (BLM k401), I adjusted the buncher phase by four degrees. This helped improve the beam spot at ITVM904, minimize a tail. I don't think this adjustment will do anything for the ILMK401 BLM trips (we've had two today). I checked beam on keV viewers, thinkgs looked ok. 2 and 7 cell phases unchanged.
One hour into the 125 pA HDIce target run. Smooth running.
In figure2, you see a jump in rad levels near A6, this happens when they perform an NMR measurement.
Yesterday, I believe Team HDIce learned the target performs better when colder. So I believe we are repeating the 125 pA run at a colder temp.
