Difference between revisions of "To-do list"

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'''To-do list (Things that are broken at UITF, or could be improved upon...)'''
+
'''To-do list (Things that are broken at UITF, or could be improved upon...)''' Updated 11/21
  
 
General:
 
General:
 
#Add sufficient concrete shielding to raise deliverable current; validate with RCG Breakpoint measurements. (In progress with FML)
 
#Add sufficient concrete shielding to raise deliverable current; validate with RCG Breakpoint measurements. (In progress with FML)
 
#Update the Operational Restrictions page to reflect new RadCon shielding assessment.  
 
#Update the Operational Restrictions page to reflect new RadCon shielding assessment.  
−
#<s>Add Mu-metal (or other shielding) where appropriate (MeV area - Wastewater) </s> (Unnecessary)
+
#Re-do lead stack on the keV dump structure w/ 80/20 table? (Design required)
−
#<s>Remove Rogowski coil #2 from beamline (HDIce de-install)</s> (completed)
+
#800-line: Shield new dump w/ RCG; work shield design w/ Shaun.
−
#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?)
 
 
#Procure more UHV supplies (another set of them)  
 
#Procure 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  
−
#<s>Two more electronics racks upstairs, one for polarimeter, one for PSS BCM (C channel, 6” tall, 23” long)</s> (Completed - Installation group)
+
#Work table upstairs on mezzanine
−
#Work table upstairs  
 
−
#<s>Shop vacuums in all locations!</s> (done)
 
−
#<s>Resource loaded engineering plan</s> (Complete/In operation - Mike McC)
 
−
#<s>Resource loaded operations plan (Mike McC)</s> (Complete)
 
−
#<s>Book shelf to under AC unit; Double door cabinet to corner (Measures okay)</s> (done)
 
 
#Label all elements with label maker in cave.
 
#Label all elements with label maker in cave.
−
#Hilty Gas bottle rack
+
#Create Generic Experimental Templates for submission
−
#Generic Experimental Templates for submission
+
#Continual quick reference drawing 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? Closed-circuit/ controllable like in Hall A/C?
 +
#UOD Updates: Correct the staffing requirement/ ok for control room unmanned laser master mode in Beam Sync [Max thoughts: Given that setting the beam mode to Beam Sync, being a software setting, is not inherently machine-safe, perhaps modify PSS to have extra physical key or button that inhibits laser? (Have that be part of staffing restrictions) It seems we want to avoid requiring to take down the gun HV, not just the cave resweep.]
 +
#Any/all changes need to be documented, UED updated, and HCO/alarm handler updated from there.
 +
#PSS recertification due by June 2022.
 +
#Move some cabinets into UITF from outside.
  
  
−
Diagnostics:
+
Vacuum:<br>
 +
*600-line:
 +
*#Re-attach IYGM604 viewer to paddle
 +
*#Fix the short in the ion pump beneath the viewer (Screw fell into pump?)
 +
*700 line: Drop VIPM701 vertically on spool to limit stray field.
 +
*800-line: Add old M6 dump to elevated beamline?
 +
*Replace capped roughing valves with new right angle valves when we vent keV region
 +
*Examine where to put valves for better segmentation. Maybe 1 in 500 line. Some in keV region. Manual valves are fine - preferred even.
 +
*More parts cleaning and inventory.
 +
 
 +
 
 +
 
 +
<u>Diagnostics:</u><br>
 +
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)
 
#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) (IC/Keith working on this now...)
+
#Add BPM + corrector @gun, similar to 2I @ CEBAF, but subject to optimization...
 +
#Autogain / auto-threshold script to configure
 +
#Move receivers to vault to limit RF interference? (How rad hard are they / how to shield?)
 +
#Replace IPMM802 receiver.
 +
 
 +
BCM:<br>
 +
#Save/restore feature for register settings
 +
#PSS critical device design / implementation
 +
#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?)  
 +
 +
Viewers/Insertables:<br>
 
#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...)
 
#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...)
−
#<s>Attach fast valve to manual valve VMVM401 (Wastewater)</s> Complete
 
−
#<s>Move Faraday Cup 3 to downstream viewer cross?  Not adjacent to control room, that’s the point here, where radiation levels are problematic (Wastewater)</s> Complete; FC3 adjacent + FC4 downstream.
 
−
#M703 harp doesn’t work - Gain setting was at 1; unable to test w low QE. Tony to signal inject.
 
−
#<s>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…. </s>
 
−
#<s>For regions that get vented frequently, there should be flange mounted NEG pump</s> Many added
 
 
#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.  
 +
#Survey view screens which are already YAG, but inappropriately labelled and correct. Change over remaining screens as opportunities present.
 +
#Swap YAG flags for Chromox everywhere we can.
 +
#Decouple viewer from FC2 upstream of booster, also add another corrector just upstream.
 +
#Re-attach IYGM604 viewer flag to turnbuckle
 
#Ready for I-to-Vs  
 
#Ready for I-to-Vs  
−
#<s>Need specialized lead-brick shielding at insertable cups </s> (Complete)
 
−
#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  
 +
#UED updates: ITV vs IYG survey of all viewers; what flags are presently designated chromox but are YAG?
 +
# Diagnostics girder in front of booster set up poorly. Can we move FC#2 downstream of diagnostic cross (or move cross upstream) so we can use cup for keV emittance measurements and matching. Add wire scanner to cross and make viewer a YAG. [Mike]
 +
 +
Harps:<br>
 +
# Move ITVM504 to cross with a harp; replace flag with a YAG. Get rid of iron parts (needs venting) per Phil. Updated version to replace it with with less ferromagnetic parts further from the beam line.
 +
#IHAM703 X/Y swapped (Fix with rotation angle in UED)
  
  
Line 42: Line 72:
 
#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 measurable field emission 
+
#*Joe's rebuild plan for keV section.
−
::*<s>Align the gun so that the cathode AND the anode are at normal incidence relative to the beamline and trajectory</s> Complete 
+
#*At the chopper chamber, VIPK301 ion pump not energized, it is just spewing CH4 into beamline, replace it  
−
::*Align the rest of the beamline 
+
#*Add load lock to depo chamber (I have cross and manipulator)  
−
::*<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.  
+
#*Add Mott polarimeter on keV line   
−
::setup the chopper phases, use the chopper 
+
#*A3 is in the wrong place, at least in terms of protecting the booster   
−
::*at the chopper chamber, VIPK301 ion pump not energized, it is just spewing CH4 into beamline, replace it  
+
#*Beam appears far right at ITVK203A, beam appears far left at ITVK401, maybe the alignment of the beamline will help?   
−
::*Add load lock to depo chamber (I have cross and manipulator)  
+
#*Install vertical Wien   
−
::*<s>Modify depo chamber to include new chemical sources</s> Completed
 
−
::*<s>Attempt to better align the mask  </s> Completed
 
−
::*<s>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)</s> Replaced with nitronic steel one.
 
−
::*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   
 
 
#BNC spigots for triggers: pockel cell and gun mode  
 
#BNC spigots for triggers: pockel cell and gun mode  
 +
#Permanently incorporate prep chamber instrumentation into EPICS
 +
#*stalk heater PS, temperature readback, ion pump current, anode current. Consider protection logic to disable heater if pressure or temp gets too high. Add oven timer. It should automagically post a completion notice to UITFLOG.
 +
#*maybe also an EPICS-switchable DC voltage for the auxiliary laser diode (replaces manual &quot;beam shutter&quot;)?
 +
#*have a second PS for the dispenser; could be remote-controlled or not, don't really care... we can't automate the whole process anyway because of the manual valve
  
 
Optics/CASA:
 
Optics/CASA:
Line 62: Line 89:
 
::*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 (In progress)
 
#Institutionalize use of qsutility to set quads (In progress)
 +
#Understand out-of-plane focusing from dipoles
 +
#Xi to save relevant field maps to wiki for posterity + GPT model/deck.
 +
#Ditto elegant - opticians - SVT repository?
 +
  
 
RF/LLRF:
 
RF/LLRF:
Line 67: Line 98:
 
#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.  
−
#<s>Complete microphonics assessment, install vibration isolation pads?</s>  SRF completed - Post to wiki?
 
 
#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  
−
#<s>Better rf quality to 2-cell?</s> Continual evolution by LLRF 
 
 
#Do the piezo tuners do anything?  Why not?  
 
#Do the piezo tuners do anything?  Why not?  
−
#<s>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.</s> Already fabricated... c'est la vie
 
 
#LLRF distribution map (frequencies etc.)
 
#LLRF distribution map (frequencies etc.)
 +
#Install Brock cavity in MeV region.
 +
#Jitter assessment and correction
  
 
DC Power:
 
DC Power:
 
#Consolidate the locations of steering magnets? Put them where they need to be  
 
#Consolidate the locations of steering magnets? Put them where they need to be  
−
#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
 +
#Steering magnet holders for big and small Haimsons.
 +
#Systematic Checks of magnet polarity.
 +
#Add hall probes on MDL dipoles
 +
#Move 2 quads from elevated line to 500-region for 6-D phase space matching? [Mike]
 +
  
 
Software:
 
Software:
−
#<s>Global Channel Access button doesn’t work, it would be nice to have </s> (done)
 
 
#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. (Requested from Bevins)
−
#<s>We have a Hot Check Out tool, but we don’t presently use it </s> We do now...
 
 
#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  
−
#<s>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?  </s>
 
−
#<s>Whose responsibility is it to update UED? How does one actually do that? Maybe two people know the answers.</s> (System owners)
 
−
#<s>Survey existing UED for accuracy (Ops Liaison) </s> (Complete)
 
  
  
 
SSG:
 
SSG:
 +
#SSI screens for existing installation
 +
#HMI screen install into pss cabinet
 
#More Robust Rapid Access system?
 
#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?  
 
::*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  
 
::*Need a professional rapid access beacon/system at entry way to the enclosure  
 
::*Closed circuit cameras inside the enclosure  
 
::*Closed circuit cameras inside the enclosure  
−
#SSI screens for existing installation
+
 
  
 
ACE:
 
ACE:
Line 101: Line 133:
 
#*Table top printer for control room
 
#*Table top printer for control room
 
#*<s>Replace central big screen monitor in control room (Property tag F1-8291)</s> (Done; excess bad monitor?)
 
#*<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
 
#*MCC Style Wall monitors
−
#Power Strip, power supply cable, and 2 monitors for control room
 

Latest revision as of 22:46, 21 November 2021

To-do list (Things that are broken at UITF, or could be improved upon...) Updated 11/21

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. Re-do lead stack on the keV dump structure w/ 80/20 table? (Design required)
  4. 800-line: Shield new dump w/ RCG; work shield design w/ Shaun.
  5. Procure more UHV supplies (another set of them)
  6. Boards that convert electrical to fiber and vice versa
  7. Work table upstairs on mezzanine
  8. Label all elements with label maker in cave.
  9. Create Generic Experimental Templates for submission
  10. Continual quick reference drawing 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? Closed-circuit/ controllable like in Hall A/C?
  13. UOD Updates: Correct the staffing requirement/ ok for control room unmanned laser master mode in Beam Sync [Max thoughts: Given that setting the beam mode to Beam Sync, being a software setting, is not inherently machine-safe, perhaps modify PSS to have extra physical key or button that inhibits laser? (Have that be part of staffing restrictions) It seems we want to avoid requiring to take down the gun HV, not just the cave resweep.]
  14. Any/all changes need to be documented, UED updated, and HCO/alarm handler updated from there.
  15. PSS recertification due by June 2022.
  16. Move some cabinets into UITF from outside.


Vacuum:

  • 600-line:
    1. Re-attach IYGM604 viewer to paddle
    2. Fix the short in the ion pump beneath the viewer (Screw fell into pump?)
  • 700 line: Drop VIPM701 vertically on spool to limit stray field.
  • 800-line: Add old M6 dump to elevated beamline?
  • Replace capped roughing valves with new right angle valves when we vent keV region
  • Examine where to put valves for better segmentation. Maybe 1 in 500 line. Some in keV region. Manual valves are fine - preferred even.
  • More parts cleaning and inventory.


Diagnostics:
BPMS:

  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. Add BPM + corrector @gun, similar to 2I @ CEBAF, but subject to optimization...
  3. Autogain / auto-threshold script to configure
  4. Move receivers to vault to limit RF interference? (How rad hard are they / how to shield?)
  5. Replace IPMM802 receiver.

BCM:

  1. Save/restore feature for register settings
  2. PSS critical device design / implementation
  3. 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?)

Viewers/Insertables:

  1. 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...)
  2. Cameras that can be line-synced, then we could use them to look for 60 Hz motion.
  3. Survey view screens which are already YAG, but inappropriately labelled and correct. Change over remaining screens as opportunities present.
  4. Swap YAG flags for Chromox everywhere we can.
  5. Decouple viewer from FC2 upstream of booster, also add another corrector just upstream.
  6. Re-attach IYGM604 viewer flag to turnbuckle
  7. Ready for I-to-Vs
  8. A3 should be closer to booster in order to protect the booster and define the launch
  9. UED updates: ITV vs IYG survey of all viewers; what flags are presently designated chromox but are YAG?
  10. Diagnostics girder in front of booster set up poorly. Can we move FC#2 downstream of diagnostic cross (or move cross upstream) so we can use cup for keV emittance measurements and matching. Add wire scanner to cross and make viewer a YAG. [Mike]

Harps:

  1. Move ITVM504 to cross with a harp; replace flag with a YAG. Get rid of iron parts (needs venting) per Phil. Updated version to replace it with with less ferromagnetic parts further from the beam line.
  2. IHAM703 X/Y swapped (Fix with rotation angle in UED)


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:
    • Joe's rebuild plan for keV section.
    • 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
  6. BNC spigots for triggers: pockel cell and gun mode
  7. Permanently incorporate prep chamber instrumentation into EPICS
    • stalk heater PS, temperature readback, ion pump current, anode current. Consider protection logic to disable heater if pressure or temp gets too high. Add oven timer. It should automagically post a completion notice to UITFLOG.
    • maybe also an EPICS-switchable DC voltage for the auxiliary laser diode (replaces manual "beam shutter")?
    • have a second PS for the dispenser; could be remote-controlled or not, don't really care... we can't automate the whole process anyway because of the manual valve

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)
  2. Understand out-of-plane focusing from dipoles
  3. Xi to save relevant field maps to wiki for posterity + GPT model/deck.
  4. Ditto elegant - opticians - SVT repository?


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.)
  7. Install Brock cavity in MeV region.
  8. Jitter assessment and correction

DC Power:

  1. Consolidate the locations of steering magnets? Put them where they need to be
  2. Polarity of magnets not all correct, and some H/V labels are incorrect
  3. Add corrector in front of Booster for Max
  4. Steering magnet holders for big and small Haimsons.
  5. Systematic Checks of magnet polarity.
  6. Add hall probes on MDL dipoles
  7. Move 2 quads from elevated line to 500-region for 6-D phase space matching? [Mike]


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. SSI screens for existing installation
  2. HMI screen install into pss cabinet
  3. 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


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?)
    • MCC Style Wall monitors
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