 Wednesday, April 26, 2017, 16:52, Aurelia Laxdal, South Hot-Cell, Repair, TM3, , TM3 Lower Service Tray Video Inspection 
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chad fisher wrote:
A video inspection of the lower service tray was performed this morning. Camera was inserted upwards |
 Wednesday, April 26, 2017, 17:37, Aurelia Laxdal, South Hot-Cell, Repair, TM3, no target, TM3 HV tests at atmosphere Pictures from April 19-21, 2017
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Please see the first two pictures of the HV test at atmosphere done on April 19.
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Wednesday, April 26, 2017, 17:55, Aurelia Laxdal, South Hot-Cell, Repair, TM3, no target, TM3 Schedule updates at the South Hot Cell and CS
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Please see TM3's Updated Schedule (the current schedule) at the SHC and TCS.
For the record I am uploading TM3's Initial Schedule at the SHC and TCS. |
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Thursday, April 27, 2017, 19:59, Aurelia Laxdal, South Hot-Cell, Repair, TM3, no target, TM3 HV tests at atmosphere for Each Line(s) April 27, 2017
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Today a HV test at atmosphere was performed for Each Line(s), while floating the other lines.
Please note the Einzel Lens line (Y) was grounded.
Tests performed: |
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Sunday, April 30, 2017, 20:57, Aurelia Laxdal, South Hot-Cell, Repair, TM3, no target, TM3 May 1-15, 2017 Tentative Schedule at the SHC and TCS
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| Please see attachment for TM3 May 1-15, 2017 Tentative Schedule at the SHC and TCS. |
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Monday, May 01, 2017, 08:53, chad fisher, South Hot-Cell, Repair, TM3, , Fiberglass removal
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| Fiberglass, capton tape and tie straps have been removed from TM3. |
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Monday, May 01, 2017, 13:11, David Wang, South Hot-Cell, Repair, TM3, , Electrical Check on TM3 after fibergalss is moved in SHC.
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RU( coil 1), F (anode), and 60kv bias(HS, Gasline, and MSP) are shorted together. Other lines are good. They are measured between individual
line each other @500V. The megga showed OL. All of them to ground are OL @500V as well. EL is grounded during check. |
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Tuesday, May 02, 2017, 18:33, Aurelia Laxdal, South Hot-Cell, Repair, TM3, no target, TM3 HV tests at atmosphere for Each Line(s) after the Fiber Glass removal May 2, 2017
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Today a HV test at atmosphere was performed for Each Line(s), while floating the other lines. THIS TEST AT ATMOSPHERE IS THE FIRST ONE AFTER THE FIBER
GLASS WAS REMOVED.
Please note: |
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Thursday, May 04, 2017, 14:06, David Wang, Conditioning Station, Repair, TM3, , A vacuum to air leak on TM3 service cap round side panel was found and fixed..
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During TM3 roughing down yesterday afternoon,The vacuum gauges CG1 and CG1S stopped at 1.20 torr and refused to drop down. Leak detector was used to
found where the problem was. LD was in rough detecting mode and showed 2.7xE-6 atm.cc/sec as base leak rate. Spray medium amount of helium to TM3
service top, and found this leak was on round panel of TM3 side wall. LR climbed to E-4 atm.cc/sec range on helium spraying. In my vie,One 10# socket head |
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Thursday, May 04, 2017, 19:10, Aurelia Laxdal, Conditioning Station, Repair, TM3, no target, TM3 HV test at TCS up to 50kV
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Today TM3 was conditioned up to 50kV. At 50kV sparking started and to go higher in voltage it needs more conditioning time. Lowered it to 49kV for the
night. |
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Friday, May 05, 2017, 11:06, David Wang, Crane, Standard Operation, TM3, , TH crane is used for 5 shielding blocks transferring.
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TH crane is used for transferring five shielding blocks(30000lbs) today. All brakes work fine. Mostly, I do not need crane slow up motion for
this job so during 1 hour moving, no rattle sound and burning smell has been found. I think TH crane is good to use as we decided. |
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Friday, May 05, 2017, 11:53, David Wang, Conditioning Station, Repair, TM3, , sparking on TM3 serice cap top.
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Sparking was found this morning inside HV cover on TCS in TH while TM3 was HV conditioning at TCS. The TCS bias was set to 50KV when I found this spark.
It sparks between HV cover front side wall to a KF 25 clamp on HS water terminal. The KF 25clamp is used in this situation on HS water line top because
the HS line is opened inside module, and we need a vacuum seal on the top of this line. Actually, The clap is much smaller than the corona ring on |
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Friday, May 05, 2017, 19:36, Aurelia Laxdal, Conditioning Station, Repair, TM3, no target, TM3 HV test at TCS up to 65kV
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Today TM3 HV conditioning went up to 65kV. I'll leave it here over night. ISAC OPS have instructions to keep an alarm on the HV, and ion gauge and turbo
pump (TP2 tripped 3 times due to sparking). |
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Saturday, May 06, 2017, 13:30, Aurelia Laxdal, Conditioning Station, Repair, TM3, no target, TM3 current limiting
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Today the voltage was raised from 65kV to 65.7kV. After about 10min at this level TM3 started current limiting. TM3 was not sparking when this happened.
ISAC OPS turned it OFF and then tried to ramp it back ON, but could not do it due to the current limiting.
I turned OFF/ON the PS (locally) 20ming ago and and then tried to get it back from the Control Room, but around 4-5kV it started current limiting. |
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Tuesday, May 09, 2017, 07:00, David Wang, Conditioning Station, Repair, TM3, , Follow up Aurelia's entry, TM3 and TCS current limits investigation.
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Aurelia and I investigated this current limit issue May 8th. First, By separating TM3 from TCS. we found the problem is on TCS side. We did a Megga
test on TM3 as well. TM3 is good at 1KV megga test. After that, The insulators between TCS to ground is test. they are good which could hold 1G ohm at
1000V megga test. So the problem should be on power supply side including power supply itself ,cables and transformer. Later, Tom and John found |
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Tuesday, May 09, 2017, 12:45, David Wang, Conditioning Station, Repair, TM3, , TM3 service tray side panel is cleaned and installed back to TM3
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TM3 service tray side panel is cleaned and installed back to TM3 this morning. I visually inspected service tray insulators. Nothing is changed comparing
to inspection before.Nine screws are installed on panel to hold it onto TM3. |
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Thursday, July 13, 2017, 10:53, Travis Cave, Conditioning Station, Standard Operation, TM3, no target, Module move
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| TM#3 has been moved from the north east silo to the conditioning station. |
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Monday, July 17, 2017, 16:28, Anders Mjos, Conditioning Station, Development, TM3, No target, Conditioning TM3
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50 kV stable with less than 1 spark/h during the weekend by RIB obs.
Today 57 kV reached, but observed sparking on the resistors of the new HV cable. The cable will be removed to take out the resistors, before reinstalling
it. |
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Monday, July 17, 2017, 17:50, Aurelia Laxdal, Conditioning Station, Development, TM3, No target, Conditioning TM3
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Anders Mjos wrote:
50 kV stable with less than 1 spark/h during the weekend by RIB obs. |
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Tuesday, July 18, 2017, 16:53, Anders Mjos, Conditioning Station, Development, TM3, No target, Conditioning TM3
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Conditioning continues today with resistors removed from the HV cable
Tuesday, July 18, 2017, 16:53: BIAS / EZL 50 / 25 kV - no sparks
Tuesday, July 18, 2017, 16:56: BIAS / EZL 55 / 27.5 kV - one spark |
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