Difference between revisions of "May 19, 2017 - 200kV gun upgrade meeting"
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(Created page with "===200kV Gun=== * Task and Timeline Gantt chart => media:170421_CHG.pdf ===Gun2 NEG Tube=== * Updated NEG tube => media:NEGTUBE_MAY03.pdf :M20 Old Assembly Modificati...") |
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===200kV Gun=== | ===200kV Gun=== | ||
* Task and Timeline Gantt chart => [[media:170421_CHG.pdf]] | * Task and Timeline Gantt chart => [[media:170421_CHG.pdf]] | ||
+ | * The electrode is out of the machine shop | ||
+ | ** The key was filed to prevent it from being jammed in the electrode | ||
+ | ** With the key fixed, the electrode assembly was measured by S&A, with and w/o the key. Danny M. compared to the model: "so the height is correct and the pitch is off 0.008 inches. those numbers seem o.k. much better than the previous numbers, and we know the key fits o.k." | ||
+ | * Bubba polished the electrode with 320 grit sandpaper in prep for barrel polishing with corncob. | ||
+ | * The electrode has been ultrasonic cleaned in micro in preparation for vacuum firing to 900C. | ||
+ | |||
+ | ===325kV Gun .... WHAT ?!?!?=== | ||
+ | [[media:170519_325kV_simulations.pdf]] | ||
===Gun2 NEG Tube=== | ===Gun2 NEG Tube=== | ||
− | * | + | * Final NEG tube design => [[media:NEGTUBE_MAY03.pdf]] |
− | :M20 Old Assembly Modification [[media:0990.pdf]] | + | : Ordered (6) 4.5" rotatable, 2-1/2" bore => (2) in hand, (4) on back order |
− | :M20 New Assembly Can [[media:0991.pdf]] | + | : Ordered 6" to 4-1/2" reducers => |
− | :M20 New Assembly 6.00 x 4.500 reducer flange[[media:0.992.pdf]] | + | : (3) FH sent to MMF => One will be read for NEG tube by next Friday 5/26, others week after |
+ | ::a) check/replace coil leads w/ 240C insulator as needed, some have old shrink wrap | ||
+ | ::b) hi pot each coil | ||
+ | ::c) measure each coil using HMIN/HMAX -2.5A/+2.5A | ||
+ | ::d) Bz v. z at r=0 ALL (and r=2,4,6 mm for ONE) | ||
+ | ::e) Bz v. I at r=0,z=0 ALL | ||
+ | * BPM process : Fabricate, Clean, Leak Test, Optical Align, Electrical Acceptance and/or Gabou Line, Install | ||
+ | :: Pete Francis performing optical/electrical acceptance testing... | ||
+ | :: M20 #1 (Musson tested) - > First M20 with no serial number optically looks bad and did not pass acceptance test. | ||
+ | :: M20 #2 (Musson tested) -> Second M20 with serial no. #PM20-127 looks ok...... but probably could use an Optical Alignment | ||
+ | :: M20 #3 (Greg Marble spare) -> Third M20 tested great | ||
+ | :: M20 #4 (Greg Marble spare) -> Fourth M20 test occurred during electrical interference, re-test on Monday | ||
+ | * What next? | ||
+ | : Send to shop for modification (327755) => Request June 9 | ||
+ | ::M20 Old Assembly Modification [[media:0990.pdf]] | ||
+ | ::M20 New Assembly Can [[media:0991.pdf]] | ||
+ | ::M20 New Assembly 6.00 x 4.500 reducer flange[[media:0.992.pdf]] | ||
+ | : Leak check | ||
+ | : Repeat optical/electrical acceptance | ||
+ | : NEG coat | ||
+ | : Gabou measurement | ||
+ | : Install | ||
===Gun3 Removal and Diagnostics Chamber Installation === | ===Gun3 Removal and Diagnostics Chamber Installation === | ||
Line 19: | Line 48: | ||
===Radmon update=== | ===Radmon update=== | ||
+ | :[https://logbooks.jlab.org/entry/3473167 Installed at CEBAF] | ||
+ | :[https://logbooks.jlab.org/entry/3473203 Checked and ready] | ||
=== Summer 2017 SAD Update === | === Summer 2017 SAD Update === | ||
− | [[media: | + | :[[media:SADCIS_v5.docx]] |
Latest revision as of 10:00, 19 May 2017
200kV Gun
- Task and Timeline Gantt chart => media:170421_CHG.pdf
- The electrode is out of the machine shop
- The key was filed to prevent it from being jammed in the electrode
- With the key fixed, the electrode assembly was measured by S&A, with and w/o the key. Danny M. compared to the model: "so the height is correct and the pitch is off 0.008 inches. those numbers seem o.k. much better than the previous numbers, and we know the key fits o.k."
- Bubba polished the electrode with 320 grit sandpaper in prep for barrel polishing with corncob.
- The electrode has been ultrasonic cleaned in micro in preparation for vacuum firing to 900C.
325kV Gun .... WHAT ?!?!?
media:170519_325kV_simulations.pdf
Gun2 NEG Tube
- Final NEG tube design => media:NEGTUBE_MAY03.pdf
- Ordered (6) 4.5" rotatable, 2-1/2" bore => (2) in hand, (4) on back order
- Ordered 6" to 4-1/2" reducers =>
- (3) FH sent to MMF => One will be read for NEG tube by next Friday 5/26, others week after
- a) check/replace coil leads w/ 240C insulator as needed, some have old shrink wrap
- b) hi pot each coil
- c) measure each coil using HMIN/HMAX -2.5A/+2.5A
- d) Bz v. z at r=0 ALL (and r=2,4,6 mm for ONE)
- e) Bz v. I at r=0,z=0 ALL
- BPM process : Fabricate, Clean, Leak Test, Optical Align, Electrical Acceptance and/or Gabou Line, Install
- Pete Francis performing optical/electrical acceptance testing...
- M20 #1 (Musson tested) - > First M20 with no serial number optically looks bad and did not pass acceptance test.
- M20 #2 (Musson tested) -> Second M20 with serial no. #PM20-127 looks ok...... but probably could use an Optical Alignment
- M20 #3 (Greg Marble spare) -> Third M20 tested great
- M20 #4 (Greg Marble spare) -> Fourth M20 test occurred during electrical interference, re-test on Monday
- What next?
- Send to shop for modification (327755) => Request June 9
- M20 Old Assembly Modification media:0990.pdf
- M20 New Assembly Can media:0991.pdf
- M20 New Assembly 6.00 x 4.500 reducer flangemedia:0.992.pdf
- Leak check
- Repeat optical/electrical acceptance
- NEG coat
- Gabou measurement
- Install
Gun3 Removal and Diagnostics Chamber Installation
- May 8-12 => Remove and replace Gun3 ATLIS task
Eliminating Gun Switch Software
- April 28 => Remove gun switch software ATLIS task
- Software removed and interlocks tested ELOG entry
- Yet to do a) remove VBV3I02 from special interlock and b) swap PLC for relays