ID |
Date |
Author |
Target Material |
Target Oven W.O# |
Source |
Status |
Subject |
269
|
Tuesday, March 30, 2021, 16:04 |
Marla Cervantes | UO2/C | P2N-02 | | Done | P2N-3 carbothermal reduction | Green target material characteristics (elog 105)
#discs = 49
Average disc thickness = 0.453mm
Empty cartridge weight = 9.42 g
Full cartridge weight = 39.86 g
UO2+C weight = 30.44 g
Tuesday, March 30, 2021, 16:04
The target material was loaded in a P2N oven, wrapped with three heat shields, and set in the EVAP1
EVAP1 is currently being evacuated.
Wednesday, March 31, 2021, 09:42
IGP1 = 3.24e-6 Torr
Good vacuum 1e-1 Torr
Bad vacuum 5e-1 Torr
Autoramp set to 1A/10s to 150 A.
Wednesday, March 31, 2021, 10:17
TGHT = .54 V, 149.88 A
IGP1 = 6.3e-4 Torr and increasing
Max pressure = 0.06 Torr
Wednesday, March 31, 2021, 10:33
IGP1= 0.004 Torr
Autoramp set to 1A/10s to 200 A
Wednesday, March 31, 2021, 10:43
Maximum pressure 0.03 Torr and going down
Autoramp set to 1A/10s to 250 A
Wednesday, March 31, 2021, 11:04
TGHT = 1.1 V, 299.9 A
IGP1 = 6e-4 Torr and going down
Autoramp set to 2.5 A/10 s to 700 A
Wednesday, March 31, 2021, 11:35
Ramp stopped at 690 A
TGHT = 2.9V, 689.1A
IGP1 = 0.127 Torr
Wednesday, March 31, 2021, 11:37
Autoramp set to 700 A at 1A/20s
Manually ramped to 740 A (3V) to make sure carbothermal reduction is done.
Wednesday, March 31, 2021, 12:00
The power supply tripped, Gelo was monitoring the heating process.
Wednesday, March 31, 2021, 14:33
The target will be heated for 4 hours to get read of impurities.
IGP1 = 6e-6 Torr
Autoramp set to 650 at 1A/10s
Wednesday, March 31, 2021, 20:37
TGHT = 2.77 V, 669.6A
IGP1 = 8.5e-6 Torr
EVAP1 ramped down to 0 A at 2 A/min |
270
|
Thursday, April 15, 2021, 15:01 |
Marla Cervantes | | | | | IGP1 patch | Thursday, March 31, 2021, 14:42
EVAP1's TGHT has been tripping even when the pressure is below the tripping limits. The temperature of the turbo pump and the TGHT's power supply were monitored discarding the possibility of tripping due to the overheating of these pieces of equipment.
Gelo has been monitoring the IGP1 during carbothermal reductions to pinpoint the tripping issue, below is Gelo description to the issue and the patch he implemented to fix it.
"IGP loses its STATON (On status) if the value from the device is not within the valid voltage window (0.7 to 10 V). IEVAP:IGP1 for some reason goes to 0V for a few seconds then goes back up to where it left off.
Prior to the latest software updated, I added a 2 second delay in the code so that any invalid signal <=2s will be ignored.
Here is the data that you sent me specifically looking at when it tripped. I also attached the data that you sent me. << File: 310321-P2N-3-CR (1).txt >>
Time
|
IEVAP:TGHT:RDVOL [V]
|
IEVAP:TGHT:RDCUR [A]
|
IEVAP:IGP1:RDVAC [T]
|
03/31/2021 12:00:25
|
3.07
|
740.9
|
0.01866428
|
03/31/2021 12:00:26
|
3.07
|
741.1
|
0.01838651
|
03/31/2021 12:00:27
|
3.07
|
740.7
|
0.01838651
|
03/31/2021 12:00:28
|
3.07
|
740.8
|
0.01797758
|
03/31/2021 12:00:29
|
3.08
|
740.9
|
0.0178433
|
03/31/2021 12:00:30
|
3.08
|
740.6
|
0.0178433
|
03/31/2021 12:00:31
|
3.08
|
740.8
|
0
|
03/31/2021 12:00:32
|
3.08
|
741.1
|
0
|
03/31/2021 12:00:33
|
0.14
|
42.2
|
0.01680456
|
03/31/2021 12:00:34
|
0
|
3.3
|
0.01513015
|
03/31/2021 12:00:35
|
0
|
3.4
|
0.01071685
|
03/31/2021 12:00:36
|
0
|
3.2
|
0.00788081
|
03/31/2021 12:00:37
|
0
|
3.2
|
0.00673278
|
03/31/2021 12:00:38
|
0
|
2.6
|
0.00445774
|
TGHT Voltage and TGHT current are both read from the same PLC module, which tells me that the PLC module is not likely the issue since we were still reading other signals when IGP was reading 0.
For the new update, I adjusted the delay to 5 seconds since the signal drop seemed like it was about 2s and was enough to lose the IGP STATON bit which tripped TGHT.
The delay only applies for the STATON status which can also be described as reading OK status in this case. Any other trip will be instantaneous and work as normal.
STATON is “ANDed” with other trips. i.e. IEVAPIGP_LESS10MTORR = IEVAPIGP1_RDVAC < 10mTorr AND IEVAPIGP1_STATON."
|
271
|
Saturday, June 05, 2021, 09:14 |
Marla Cervantes | UC2 | | TARGET BOAT | In progress | UCx#33 Conditioning | Saturday, June 05, 2021, 08:57
Target #33 was installed in the EVAP1 and pumped down yesterday (Friday 4).
Target #33 is going to be conditioned on a Ta boat wrapped with 3 Ta foils.
IGP1 = 3.85e-6 Torr
Good vacuum = 1e-1 Torr
Bad vacuum = 5e-1 Torr
Power desired 1.6kW. This is the first target conditioned this way,
Saturday, June 05, 2021, 09:13
Current ramp is 2A/30s to 400 A
Saturday, June 05, 2021, 10:59
TGHT = 3.5V, 399.7 A, 1.4 kW
IGP1 = 4.4e-5 Torr
Saturday, June 05, 2021, 11:00
Current ramp is 2A/30s to 450 A
Saturday, June 05, 2021, 11:14
TGHT = 4.06 V, 451.584 A, 1.4 kW
IGP1 = 4.86e-5 Torr
Saturday, June 05, 2021, 11:15
Current ramp is 2A/30s to 500 A
Saturday, June 05, 2021, 11:23
TGHT = 4.23 V, 467.2 A, 1.97 kW pressure was still increasing a little at 1.6kW
IGP1 = 4.86e-5 Torr
Saturday, June 05, 2021, 19:10
TGHT = 4.08 V, 459.52 A,
IGP1 = 6.4e-6 Torr
Initiate ramp down at 2 A/min to 0A |
274
|
Wednesday, September 15, 2021, 07:19 |
Marla Cervantes | UC2 | | TARGET BOAT | Done | Conditioning 2sc samples | Wednesday, September 14, 2021, 21:14
Boat is wrapped with 2 layers of Ta-heat shield
The samples consists of 15 discs of UCx of 14mm diameter
The chamber is currently pumping down.
TGHT will be ramped up to 450 A
Wednesday, September 15, 2021, 07:17
IGP1 = 6.75e-6 Torr
Tapped up manually to 40A.
TGHT = 60 A, 2.39 V
Vacuum stable IG1 = 7.25e-6 Torr
Initiating auto-ramp for TGHT at a rate of 0.2A/min to 445 A
Parameter setup: 5.0e-5 good vac, 8.0e-5 bad vac.
Wednesday, September 15, 2021, 11:57
IGP1=2.24e-5 Torr
TGHT= 102.016 A, 1.275 V
Autoramp changed to 1A/min to 450 A
Wednesday, September 15, 2021, 12:53
IGP1 = 3.3e-5 torr
TGHT= 150 A, V
Autoramp changed to 2A/30s to 450 A
1e-1 good vac, 5e-1 bad vac
Wednesday, September 15, 2021, 12:59
Friday, September 17, 2021, 07:54
IGP1 = 3.81e-6 Torr
TGHT = 449.6 A, 4.31 V
Autoramp set to -2A/min to 0 A |
44
|
Monday, November 14, 2011, 11:56 |
Peter Kunz | UC2 | 38634-10 | LP-SIS | Done | UCx03: Conditioning up to 175A | Evaporator was cleaned Nov 11 from after target was conditioned up to 175A. There was significant condensation of oily fluid on the left side where the target container was open (D-shaped end cap). There were also deposits in the hole for the ionizer, but the ionizer itself seemed to be clean. |
Attachment 1: 0--0009.jpg
|
|
Attachment 2: 0--0011.jpg
|
|
58
|
Monday, September 03, 2012, 02:56 |
Peter Kunz | UC2 | 39165-5 | LP-SIS | In progress | Conditioning UCx05 | Organic/volatile burnoff complete at TGHT = 190A. Rampdown initiated. |
59
|
Tuesday, September 04, 2012, 17:26 |
Peter Kunz | UC2 | 39165-5 | LP-SIS | In progress | Conditioning UCx05 | Organic gunk cleaned out. Beginning 2nd phase of conditioning. |
60
|
Friday, September 07, 2012, 17:21 |
Peter Kunz | UC2 | 39165-5 | LP-SIS | In progress | Conditioning UCx05 | Target 6h at 520A. IEVAP:IG1 8.4e-6 Torr. Cool down sequence initiated. |
61
|
Monday, September 10, 2012, 11:00 |
Peter Kunz | UC2 | 39165-5 | LP-SIS | In progress | Conditioning UCx05 | Plot of conditioning run: IEVAP:IG1, TGHT |
Attachment 1: UC2_05_conditioning.png
|
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70
|
Tuesday, July 02, 2013, 11:13 |
Peter Kunz | UO2/C | Target boat #2 | | Done | Processing UC2 flakes (batch#05 - 18062013) |
1. stage - burning off organics complete
2. stage - carbonization began 1-8 am 2013/07/02 |
Attachment 1: UO2-C-01.png
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