Difference between revisions of "To-do list"

From Ciswikidb
Jump to navigation Jump to search
(34 intermediate revisions by the same user not shown)
Line 2: Line 2:
  
 
General:
 
General:
−
#More concrete shielding! 
+
#Add sufficient concrete shielding to raise deliverable current; validate with RCG Breakpoint measurements. (In progress with FML)
−
#Mu-metal
+
#Update the Operational Restrictions page to reflect new RadCon shielding assessment.
−
#Remove Rogowski coil #2 from beamline
+
#I am uncomfortable with the amount of lead stacked on the keV dump structure (If Cameron has a bit of time available, an 80/20 table maybe?)
−
#I am uncomfortable with the amount of lead stacked on the keV dump structure  
+
#Procure more UHV supplies (another set of them)
−
#More UHV supplies, another set of them  
 
 
#Boards that convert electrical to fiber and vice versa  
 
#Boards that convert electrical to fiber and vice versa  
−
#Two more electronics racks upstairs, one for polarimeter, one for PSS BCM (C channel, 6” tall, 23” long)
 
 
#Work table upstairs  
 
#Work table upstairs  
−
#Shop vacuums in all locations!
+
#Label all elements with label maker in cave.
 +
#Hilty Gas bottle rack
 +
#Generic Experimental Templates for submission
 +
#Continual quick reference updates
 +
#Procedure development:
 +
#*Cold Start-up
 +
#*Shut down
 +
#*Hot Standby / Daily Start-up
 +
#*Power outage response checklist
 +
#Add Video camera inside cave - preferably through viewer system for flexibility. Additional I/O required?
 +
 
  
 
Diagnostics:
 
Diagnostics:
−
#BPMs don’t report the same orbit in tune mode and CW & BPMs report beam when there is no beam: Too much 1497 MHz rf inside the enclosure? Can the stripline BPMs look for a harmonic of 1497 MHz?  Were striplines / DR receivers right choice vs older SEE antenna-style bpms?
+
#BPMs don’t report the same orbit in tune mode and CW & BPMs report beam when there is no beam: Too much 1497 MHz rf inside the enclosure? Can the stripline BPMs look for a harmonic of 1497 MHz?  Were strip lines / DR receivers right choice vs older SEE antenna-style bpms? (Musson studying behavior; RF shielding put into place upstairs)
−
#BCM outputs (we have cavities, need receivers)  
+
#BCM outputs (we have cavities, need receivers) (IC/Keith working on this now...)  
−
#Viewers were not always installed at useful Z locations, i.e., betatron phase advance.  What is a useful location?  At a beam waist.  “Viewers at nodes, BPMs at anti-nodes”  
+
#Viewers were not always installed at useful Z locations, i.e., betatron phase advance.  What is a useful location?  At a beam waist.  “Viewers at nodes, BPMs at anti-nodes” (Need Model or Beta functions, which means model work need to happen first to validate...)
−
#Replace manual valve VMVM401 with fast valve
 
−
#Move Faraday Cup 3 to downstream viewer cross?  Not adjacent to control room, that’s the point here, where radiation levels are problematic
 
−
#M703 harp doesn’t work
 
−
#What was the point of putting BPMs on the elevated beamline?  Did we think they would see 1nA beam? I guess we just thought we would thread beam in tune mode up there….  
 
−
#For regions that get vented frequently, there should be flange mounted NEG pump
 
 
#Cameras that can be line-synced, then we could use them to look for 60 Hz motion.  
 
#Cameras that can be line-synced, then we could use them to look for 60 Hz motion.  
−
#Ready for ItoVs
+
#Ready for I-to-Vs
−
#Need specialized lead-brick shielding at insertable cups
 
 
#Need a beam loss accounting system; MPS BCM cavity or PSS BCM but this is a much bigger project (can’t we just buy a system that Trent designed/built for SLAC, or duplicate it?)  
 
#Need a beam loss accounting system; MPS BCM cavity or PSS BCM but this is a much bigger project (can’t we just buy a system that Trent designed/built for SLAC, or duplicate it?)  
 
#A3 should be closer to booster in order to protect the booster and define the launch  
 
#A3 should be closer to booster in order to protect the booster and define the launch  
 +
#Survey view screens which are already YAG, but inappropriately labelled and correct. Change over remaining screens as opportunities present.
 +
#Decouple viewer from FC2 upstream of booster, also add another corrector just upstream.
 +
#IHAM703 X/Y swapped
 +
#Current Monitor Screen: Fix dump labels; Add BCM
 +
#IYGM604 vibrating?? Loose turnbuckle?
  
  
Line 34: Line 41:
 
#Install an insertable halfwave plate to flip the sign of the polarization   
 
#Install an insertable halfwave plate to flip the sign of the polarization   
 
#Photogun and keV beamline:  
 
#Photogun and keV beamline:  
−
*The photocathode lifetime at UITF is REALLY bad, the field emission at 200 kV certainly doesn’t help (is it the sole problem?).  So take apart gun polish electrode, krypton process until there’s NO measureable field emission   
+
::*The photocathode lifetime at UITF is REALLY bad, the field emission at 200 kV certainly doesn’t help (is it the sole problem?).  So take apart gun polish electrode, krypton process until there’s NO measurable field emission   
−
*Align the gun so that the cathode AND the anode are at normal incidence relative to the beamline and trajectory 
+
::*Align the rest of the beamline   
−
*Align the rest of the beamline   
+
::*<s>Fix the chopper slit (Kurt Lesker says we just need a 50:1 gear box, I’ve ordered it)</s> STAC5 controller issue; S. Windham ordered new - A5 aperture controls on it at present.
−
*Fix the chopper slit (Kurt Lesker says we just need a 50:1 gear box, I’ve ordered it)  
+
::setup the chopper phases, use the chopper   
−
setup the chopper phases, use the chopper   
+
::*At the chopper chamber, VIPK301 ion pump not energized, it is just spewing CH4 into beamline, replace it  
−
*at the chopper chamber, VIPK301 ion pump not energized, it is just spewing CH4 into beamline, replace it  
+
::*Add load lock to depo chamber (I have cross and manipulator)  
−
*Add load lock to depo chamber (I have cross and manipulator)  
+
::*Add Mott polarimeter on keV line  
−
*Modify depo chamber to include new chemical sources 
+
::*A3 is in the wrong place, at least in terms of protecting the booster   
−
*Attempt to better align the mask 
+
::*Beam appears far right at ITVK203A, beam appears far left at ITVK401, maybe the alignment of the beamline will help?   
−
*Polish the schneedle (is it aluminum? Should be steel, no silver plating required (in fact, it’s bad), polish the interior surface of all pucks)
+
::*Install vertical Wien   
−
*Add the polarimeter   
 
−
*A3 is in the wrong place, at least in terms of protecting the booster   
 
−
*Beam appears far right at ITVK203A, beam appears far left at ITVK401, maybe the alignment of the beamline will help?   
 
−
*Install vertical Wien   
 
 
#BNC spigots for triggers: pockel cell and gun mode  
 
#BNC spigots for triggers: pockel cell and gun mode  
  
 
Optics/CASA:
 
Optics/CASA:
 
#The optics modeling program should tell us beam size and aspect ratio at each viewer, so we have something to work towards, quickly, empirically  
 
#The optics modeling program should tell us beam size and aspect ratio at each viewer, so we have something to work towards, quickly, empirically  
−
*Electron beam optics not presently good, there is beta mismatch across the booster  
+
::*Electron beam optics not presently good, there is beta mismatch across the booster  
−
#Institutionalize use of qsutility to set quads  
+
#Institutionalize use of qsutility to set quads (In progress)
  
 
RF/LLRF:
 
RF/LLRF:
−
#Yao cavity damaged during one of the bakeouts? Pull it and check it out  
+
#Yao cavity damaged during one of the bake outs? Check in-situ  
 
#Buncher heater control is primitive: local heater with feedback.  There is epics temperature readback, but no epics interface to the heater control.
 
#Buncher heater control is primitive: local heater with feedback.  There is epics temperature readback, but no epics interface to the heater control.
 
#Wouldn’t it be easier to use a 200 W solid state amp to drive the 2-cell?  Forward power today is only 40 W, the 2-cell is not meant to be driven hard.  
 
#Wouldn’t it be easier to use a 200 W solid state amp to drive the 2-cell?  Forward power today is only 40 W, the 2-cell is not meant to be driven hard.  
−
#Complete microphonics assessment, install vibration isolation pads? 
 
 
#Microphonics diagnostics should be available when running beam, so that when problems are encountered, we can see immediately if there’s a correlation with microphonic vibrations. At the moment, we can only assess microphonics from inside the cave, when the beam is OFF  
 
#Microphonics diagnostics should be available when running beam, so that when problems are encountered, we can see immediately if there’s a correlation with microphonic vibrations. At the moment, we can only assess microphonics from inside the cave, when the beam is OFF  
−
#Better rf quality to 2-cell? 
 
 
#Do the piezo tuners do anything?  Why not?  
 
#Do the piezo tuners do anything?  Why not?  
−
#I think the booster should have been a low Q design to make it more reliable. I am not expert on this topic, but high Q is important for long linacs that present a large cryo burden.  The booster does not pose a large cryo burden - we should have forgone Q for reliability. 
+
#LLRF distribution map (frequencies etc.)
  
 
DC Power:
 
DC Power:
Line 69: Line 70:
 
#Need a supply of large haimson steering magnets on the shelf (five sets should arrive soon)  
 
#Need a supply of large haimson steering magnets on the shelf (five sets should arrive soon)  
 
#Polarity of magnets not all correct, and some H/V labels are incorrect  
 
#Polarity of magnets not all correct, and some H/V labels are incorrect  
 +
#Add corrector in front of Booster for Max
 +
#BdL in 15/45 degree bends in keV region a mystery. Gary updated field map. Reboot iocitfmag when convenient.
 +
#Steering magnet holders for big and small Haimsons.
 +
#Systematic Checks of magnet polarity.
  
 
Software:
 
Software:
−
#Global Channel Access button doesn’t work, it would be nice to have
+
#MAC Access for Training purposes, so global doesn't have to be opened. (Requested from Bevins)
−
#MAC Access for Training purposes, so global doesn't have to be opened
 
−
#We have a Hot Check Out tool, but we don’t presently use it
 
 
#Some epics screens were hastily prepared, copied from CEBAF.  Epics screens should be improved, streamlined  
 
#Some epics screens were hastily prepared, copied from CEBAF.  Epics screens should be improved, streamlined  
−
#UED remains a mystery to me, and from what I can tell, to most everyone else too, even people in software know little about it.  Who does what?  Whose responsibility is it to update UED? How does one actually do that? Maybe two people know the answers.
 
−
#Update the Operational Restrictions page to reflect RadCon shielding assessment, maybe I did this already?
 
  
  
 
SSG:
 
SSG:
−
#Probably need a beacon or locked door to the aisle way above UITF (where we store stuff), or at least verification from RadCon that it’s ok to access this space when running beam.  Or maybe it’s safe to go back there when running beam?  
+
#More Robust Rapid Access system?
−
#Need a professional rapid access beacon/system at entry way to the enclosure  
+
::*Probably need a beacon or locked door to the aisle way above UITF (where we store stuff), or at least verification from RadCon that it’s ok to access this space when running beam.  Or maybe it’s safe to go back there when running beam?  
−
#Closed circuit cameras inside the enclosure  
+
::*Need a professional rapid access beacon/system at entry way to the enclosure  
 +
::*Closed circuit cameras inside the enclosure  
 +
#SSI screens for existing installation
  
 
ACE:
 
ACE:
 
#We need a map of our network connections, what is the network layout now at UITF? Do all network connections go through the rack behind the laser room/control room.  Are they all owned by Accelerator Division.  I think we have a combination of IT and Accel network routers  
 
#We need a map of our network connections, what is the network layout now at UITF? Do all network connections go through the rack behind the laser room/control room.  Are they all owned by Accelerator Division.  I think we have a combination of IT and Accel network routers  
−
Where are all the pc104s and how do we reset them?
+
#Where are all the pc104s and how do we reset them?
 +
#*Table top printer for control room
 +
#*<s>Replace central big screen monitor in control room (Property tag F1-8291)</s> (Done; excess bad monitor?)
 +
#*Replace left monitor on ITFL03 work station... aperiodic line of dead pixels down middle of screen. Maybe a digitizer issue.
 +
#*MCC Style Wall monitors
 +
#Power Strip, power supply cable, and 2 monitors for control room

Revision as of 17:14, 22 September 2021

To-do list (Things that are broken at UITF, or could be improved upon...)

General:

  1. Add sufficient concrete shielding to raise deliverable current; validate with RCG Breakpoint measurements. (In progress with FML)
  2. Update the Operational Restrictions page to reflect new RadCon shielding assessment.
  3. I am uncomfortable with the amount of lead stacked on the keV dump structure (If Cameron has a bit of time available, an 80/20 table maybe?)
  4. Procure more UHV supplies (another set of them)
  5. Boards that convert electrical to fiber and vice versa
  6. Work table upstairs
  7. Label all elements with label maker in cave.
  8. Hilty Gas bottle rack
  9. Generic Experimental Templates for submission
  10. Continual quick reference updates
  11. Procedure development:
    • Cold Start-up
    • Shut down
    • Hot Standby / Daily Start-up
    • Power outage response checklist
  12. Add Video camera inside cave - preferably through viewer system for flexibility. Additional I/O required?


Diagnostics:

  1. BPMs don’t report the same orbit in tune mode and CW & BPMs report beam when there is no beam: Too much 1497 MHz rf inside the enclosure? Can the stripline BPMs look for a harmonic of 1497 MHz? Were strip lines / DR receivers right choice vs older SEE antenna-style bpms? (Musson studying behavior; RF shielding put into place upstairs)
  2. BCM outputs (we have cavities, need receivers) (IC/Keith working on this now...)
  3. Viewers were not always installed at useful Z locations, i.e., betatron phase advance. What is a useful location? At a beam waist. “Viewers at nodes, BPMs at anti-nodes” (Need Model or Beta functions, which means model work need to happen first to validate...)
  4. Cameras that can be line-synced, then we could use them to look for 60 Hz motion.
  5. Ready for I-to-Vs
  6. Need a beam loss accounting system; MPS BCM cavity or PSS BCM but this is a much bigger project (can’t we just buy a system that Trent designed/built for SLAC, or duplicate it?)
  7. A3 should be closer to booster in order to protect the booster and define the launch
  8. Survey view screens which are already YAG, but inappropriately labelled and correct. Change over remaining screens as opportunities present.
  9. Decouple viewer from FC2 upstream of booster, also add another corrector just upstream.
  10. IHAM703 X/Y swapped
  11. Current Monitor Screen: Fix dump labels; Add BCM
  12. IYGM604 vibrating?? Loose turnbuckle?


Gun/Laser (EGG):

  1. Laser power is very small. OK for bulk GaAs and keV Mott, but not enough for a program with superlattice photocathodes
  2. Move the laser under the table inside the enclosure? Eliminate the fiber... work with SSG needed to maintain all the PSS hooks.
  3. Laser power drift (temp cycle of the room AC?), but the current lock can deal with this, so not actually a problem when beam arrives at a cup or dump. Maybe a problem for Wastewater Treatment
  4. Install an insertable halfwave plate to flip the sign of the polarization
  5. Photogun and keV beamline:
  • The photocathode lifetime at UITF is REALLY bad, the field emission at 200 kV certainly doesn’t help (is it the sole problem?). So take apart gun polish electrode, krypton process until there’s NO measurable field emission
  • Align the rest of the beamline
  • Fix the chopper slit (Kurt Lesker says we just need a 50:1 gear box, I’ve ordered it) STAC5 controller issue; S. Windham ordered new - A5 aperture controls on it at present.
setup the chopper phases, use the chopper
  • At the chopper chamber, VIPK301 ion pump not energized, it is just spewing CH4 into beamline, replace it
  • Add load lock to depo chamber (I have cross and manipulator)
  • Add Mott polarimeter on keV line
  • A3 is in the wrong place, at least in terms of protecting the booster
  • Beam appears far right at ITVK203A, beam appears far left at ITVK401, maybe the alignment of the beamline will help?
  • Install vertical Wien
  1. BNC spigots for triggers: pockel cell and gun mode

Optics/CASA:

  1. The optics modeling program should tell us beam size and aspect ratio at each viewer, so we have something to work towards, quickly, empirically
  • Electron beam optics not presently good, there is beta mismatch across the booster
  1. Institutionalize use of qsutility to set quads (In progress)

RF/LLRF:

  1. Yao cavity damaged during one of the bake outs? Check in-situ
  2. Buncher heater control is primitive: local heater with feedback. There is epics temperature readback, but no epics interface to the heater control.
  3. Wouldn’t it be easier to use a 200 W solid state amp to drive the 2-cell? Forward power today is only 40 W, the 2-cell is not meant to be driven hard.
  4. Microphonics diagnostics should be available when running beam, so that when problems are encountered, we can see immediately if there’s a correlation with microphonic vibrations. At the moment, we can only assess microphonics from inside the cave, when the beam is OFF
  5. Do the piezo tuners do anything? Why not?
  6. LLRF distribution map (frequencies etc.)

DC Power:

  1. Consolidate the locations of steering magnets? Put them where they need to be
  2. Need a supply of large haimson steering magnets on the shelf (five sets should arrive soon)
  3. Polarity of magnets not all correct, and some H/V labels are incorrect
  4. Add corrector in front of Booster for Max
  5. BdL in 15/45 degree bends in keV region a mystery. Gary updated field map. Reboot iocitfmag when convenient.
  6. Steering magnet holders for big and small Haimsons.
  7. Systematic Checks of magnet polarity.

Software:

  1. MAC Access for Training purposes, so global doesn't have to be opened. (Requested from Bevins)
  2. Some epics screens were hastily prepared, copied from CEBAF. Epics screens should be improved, streamlined


SSG:

  1. More Robust Rapid Access system?
  • Probably need a beacon or locked door to the aisle way above UITF (where we store stuff), or at least verification from RadCon that it’s ok to access this space when running beam. Or maybe it’s safe to go back there when running beam?
  • Need a professional rapid access beacon/system at entry way to the enclosure
  • Closed circuit cameras inside the enclosure
  1. SSI screens for existing installation

ACE:

  1. We need a map of our network connections, what is the network layout now at UITF? Do all network connections go through the rack behind the laser room/control room. Are they all owned by Accelerator Division. I think we have a combination of IT and Accel network routers
  2. Where are all the pc104s and how do we reset them?
    • Table top printer for control room
    • Replace central big screen monitor in control room (Property tag F1-8291) (Done; excess bad monitor?)
    • Replace left monitor on ITFL03 work station... aperiodic line of dead pixels down middle of screen. Maybe a digitizer issue.
    • MCC Style Wall monitors
  3. Power Strip, power supply cable, and 2 monitors for control room
Retrieved from "https://wiki.jlab.org/ciswiki/index.php?title=To-do_list&oldid=26225"