Wednesday, April 30, 2014, 14:50

The target container was previously coated with TaC and sintered in Evap 2.

The target is loaded with 250 discs of UCx (material from batch#09_06022014)

Total length = 9.3cm

The container is wrapped with 3 layers of Ta-heat shield, including the back block.

A regular TaC coated/sintered endcap is inserted on left, wrt to the ionizer tube pointing out of the page, so the right end is open with no cap to allow out-gassing.

(Did not use a D-cap... This worked for UCx#8. Need to be careful when handling the target!)

The chamber is being dumping down.

TGHT will be ramped up to 520A - keep heating at that current for ~4 to 5 hours.

Parameter setup: 5.0e-5 good vac, 6.0e-5 bad vac. The auto-ramping rate is set to 0.1A/min.

 Wednesday, April 30, 2014, 16:41

Vacuum at 1.5 e-5 Torr.  Stepped up TGHT to 25A.

 Wednesday, April 30, 2014, 17:42

Pressure 9.2 e-6 Torr.  Initiate auto-heating.

 Friday, May 16, 2014, 16:02

Conditioning complete. (see attachment)

End-caps need to be expended before assembly.

Friday, August 24, 2012, 16:40

Target is loaded with 245 discs of UCx (material from batch#02-13062012),

Tot length = 9.1 cm. 

The container is wrapped with 3 layers of Ta-heat shield, including the back block. 

A regular TaC-coated endcap is inserted on one end and the other is inserted with a D-cap

The chamber is currently begin pumped down.

 Instructions (while I'm on vacation)

1.  TGHT will need to heat up to ~175A to burn off the organics. 

      Parameter setup:  5.0e-5 good vac, 6.0-5 bad vac.  The auto-ramping rate is set to 0.1A/min.

2.  Once the organics have burnt off, ramp down the TGHT to 0A at 2A/min.

3.  Purge the glovebox with argon gas for at least 5 mins. 

4.  Vent the chamber with Ar gas.  Close the valve when it is completely vented.

5.  Remove the target.  Be careful the left end (view from the top) is open with the D-cap. 

6.  Clean the chamber with TCE and remove all the gunge.

7.  Install the target back

8.  Pump down the chamber to at least low 10e-6 Torr before begin the final carbonization process.

9.  Auto-ramp the TGHT current to 175A at 1A/min.

10.  Once the TGHT reach to 175A.  Auto-ramp TGHT to 520A at 0.1A/min.

11.  At 520A, keep heating the target for at least 4-5 hours.

12.  Auto ramp TGHT to 0A at 2A/min.

13.  Purge the glovebox with argon for at least 5 min

14.  Vent the chamber with argon gas.  Close the vavle when it is completely vented.

15.  Remove the target from the chamber and put in the "orange box" and transport to the Ar-glove box.

Done!

 Monday, August 27, 2012, 11:26

The chamber has been pumped down over the weekend.  Vac is currently at 3.45e-6 Torr. 

Auto-ramping TGHT to 55A at 0.25A/min.

 Monday, August 27, 2012, 16:24

TGHT reached to 55A and stayed for about 2 hours.  Vacuum went up to 1.9e-5 Torr and it's slowly coming down. 

Increase auto ramping to 175A at 0.1A/min.

Thursday, October 11, 2018, 18:06

Target consists of 284 UCx discs, total packing length of 8.0 cm. 

Container was previously coated/sintered with TaC (see elog #417) in Evap#2 with TGHT set to 400A and TBHT 230A, but there was a problem with the readback.  Will ramp up TGHT to 400A to see if the carbonization is complete; if not, additional 50A on TGHT can be applied.

One end-cap is inserted on the right, wrt to the ionizer, and left end is open. 

Vacuum initial setting:

Good Vac = 5.0 e-5 Torr, Bad vac = 8.0 e-5 Torr.

pressure level will be monitored accordingly...

Auto-ramping setting

TGHT: 60 wait time, 0.2A/min, final 400A (or addtional of 50 A if required as mentioned above)

TGHT: 60 wait time, 0.2A/min, final 230A.

 Chamber is currently being pumped down.

 Friday, October 12, 2018, 15:35

Chamber has pumped down to 1.8e-6 Torr. 

Stepping up TGHT and TBHT to 40A.

 Friday, October 12, 2018, 17:07

TGHT/TBTH was held at 40A reaching max pressure of 1.7e-5 before slowly coming down. 

Initiated autoramping.

 Thursday, October 18, 2018, 11:10

TGHT reached to 400A/3.98V, pressure is coming down from the upper limit at around 320A which indicated the carbonization is approaching to completion (see attachment#1).  However, two more out-gassing steps are typically observed as TGHT reached around 450 A (see previous UCx conditioning process).  Currently the pressure is at 1.04 e-5 torr. 

Auto-ramping TGHT to 450A at 1A/min, continue to observe the vacuum...

 Thursday, October 18, 2018, 12:57

TGHT reached to 450A/4.6V. Pressure is coming down from 1.6 e-5 Torr. (see attachment#2).  Will remain at this heating current until pressure reached to mid 10-6 torr.

John Wong wrote:

Thursday, October 11, 2018, 18:06 Target consists of 284 UCx discs, total packing length of 8.0 cm.  Container was previously coated/sintered with TaC (see elog #417) in Evap#2 with TGHT set to 400A and TBHT 230A, but there was a problem with the readback.  Will ramp up TGHT to 400A to see if the carbonization is complete; if not, additional 50A on TGHT can be applied. One end-cap is inserted on the right, wrt to the ionizer, and left end is open.  Vacuum initial setting: Good Vac = 5.0 e-5 Torr, Bad vac = 8.0 e-5 Torr. pressure level will be monitored accordingly... Auto-ramping setting TGHT: 60 wait time, 0.2A/min, final 400A (or addtional of 50 A if required as mentioned above) TGHT: 60 wait time, 0.2A/min, final 230A.  Chamber is currently being pumped down.  Friday, October 12, 2018, 15:35 Chamber has pumped down to 1.8e-6 Torr.  Stepping up TGHT and TBHT to 40A.  Friday, October 12, 2018, 17:07 TGHT/TBTH was held at 40A reaching max pressure of 1.7e-5 before slowly coming down.  Initiated autoramping.  Thursday, October 18, 2018, 11:10 TGHT reached to 400A/3.98V, pressure is coming down from the upper limit at around 320A which indicated the carbonization is approaching to completion (see attachment#1).  However, two more out-gassing steps are typically observed as TGHT reached around 450 A (see previous UCx conditioning process).  Currently the pressure is at 1.04 e-5 torr.  Auto-ramping TGHT to 450A at 1A/min, continue to observe the vacuum...  Thursday, October 18, 2018, 12:57 TGHT reached to 450A/4.6V. Pressure is coming down from 1.6 e-5 Torr. (see attachment#2).  Will remain at this heating current until pressure reached to mid 10-6 torr.

 Friday, October 19, 2018, 10:00

TRIUMF had a total power outage, the TBHT  and TGHT current had been ramped down already.

Marla Cervantes wrote:

John Wong wrote: Thursday, October 11, 2018, 18:06 Target consists of 284 UCx discs, total packing length of 8.0 cm.  Container was previously coated/sintered with TaC (see elog #417) in Evap#2 with TGHT set to 400A and TBHT 230A, but there was a problem with the readback.  Will ramp up TGHT to 400A to see if the carbonization is complete; if not, additional 50A on TGHT can be applied. One end-cap is inserted on the right, wrt to the ionizer, and left end is open.  Vacuum initial setting: Good Vac = 5.0 e-5 Torr, Bad vac = 8.0 e-5 Torr. pressure level will be monitored accordingly... Auto-ramping setting TGHT: 60 wait time, 0.2A/min, final 400A (or addtional of 50 A if required as mentioned above) TGHT: 60 wait time, 0.2A/min, final 230A.  Chamber is currently being pumped down.  Friday, October 12, 2018, 15:35 Chamber has pumped down to 1.8e-6 Torr.  Stepping up TGHT and TBHT to 40A.  Friday, October 12, 2018, 17:07 TGHT/TBTH was held at 40A reaching max pressure of 1.7e-5 before slowly coming down.  Initiated autoramping.  Thursday, October 18, 2018, 11:10 TGHT reached to 400A/3.98V, pressure is coming down from the upper limit at around 320A which indicated the carbonization is approaching to completion (see attachment#1).  However, two more out-gassing steps are typically observed as TGHT reached around 450 A (see previous UCx conditioning process).  Currently the pressure is at 1.04 e-5 torr.  Auto-ramping TGHT to 450A at 1A/min, continue to observe the vacuum...  Thursday, October 18, 2018, 12:57 TGHT reached to 450A/4.6V. Pressure is coming down from 1.6 e-5 Torr. (see attachment#2).  Will remain at this heating current until pressure reached to mid 10-6 torr.    Friday, October 19, 2018, 10:00 TRIUMF had a total power outage, the TBHT  and TGHT current had been ramped down already.

  Sunday, October 21, 2018, 1:00 pm

the pumps went out, and the communication with the IEVAP was recovered on Sunday, the vacuum was 160 mTorr,

the pumps were turned on again.

Marla Cervantes wrote:

Marla Cervantes wrote: John Wong wrote: Thursday, October 11, 2018, 18:06 Target consists of 284 UCx discs, total packing length of 8.0 cm.  Container was previously coated/sintered with TaC (see elog #417) in Evap#2 with TGHT set to 400A and TBHT 230A, but there was a problem with the readback.  Will ramp up TGHT to 400A to see if the carbonization is complete; if not, additional 50A on TGHT can be applied. One end-cap is inserted on the right, wrt to the ionizer, and left end is open.  Vacuum initial setting: Good Vac = 5.0 e-5 Torr, Bad vac = 8.0 e-5 Torr. pressure level will be monitored accordingly... Auto-ramping setting TGHT: 60 wait time, 0.2A/min, final 400A (or addtional of 50 A if required as mentioned above) TGHT: 60 wait time, 0.2A/min, final 230A.  Chamber is currently being pumped down.  Friday, October 12, 2018, 15:35 Chamber has pumped down to 1.8e-6 Torr.  Stepping up TGHT and TBHT to 40A.  Friday, October 12, 2018, 17:07 TGHT/TBTH was held at 40A reaching max pressure of 1.7e-5 before slowly coming down.  Initiated autoramping.  Thursday, October 18, 2018, 11:10 TGHT reached to 400A/3.98V, pressure is coming down from the upper limit at around 320A which indicated the carbonization is approaching to completion (see attachment#1).  However, two more out-gassing steps are typically observed as TGHT reached around 450 A (see previous UCx conditioning process).  Currently the pressure is at 1.04 e-5 torr.  Auto-ramping TGHT to 450A at 1A/min, continue to observe the vacuum...  Thursday, October 18, 2018, 12:57 TGHT reached to 450A/4.6V. Pressure is coming down from 1.6 e-5 Torr. (see attachment#2).  Will remain at this heating current until pressure reached to mid 10-6 torr.    Friday, October 19, 2018, 10:00 TRIUMF had a total power outage, the TBHT  and TGHT current had been ramped down already.     Sunday, October 21, 2018, 1:00 pm the pumps went out, and the communication with the IEVAP was recovered on Sunday, the vacuum was 160 mTorr, the pumps were turned on again.

 Monday, October 22, 2018, 9:00

The target was transferred to the Ar glove box.

 Tuesday, October 23, 2018, 10:19

Target was inspected:

- Discs were in place

- Orange coating formed on the open end of target container

Spring was removed, two graphite discs were introduced, end cap was placed.

Friday, August 03, 2018, 17:44

Target consists of 230 UCx discs, total packing length of 7.1cm. 

Container was previously coated/sintered with TaC (see elog #415) in Evap#2 with TGHT set to 450A/7.5V and TBHT 230A/4.2

Vacuum initial setting:

Good Vac = 5.0 e-5 Torr, Bad vac = 8.0 e-5 Torr.

pressure level will be monitored accordingly...

Auto-ramping setting

TGHT: 60 wait time, 0.2A/min, final 450A

TGHT: 60 wait time, 0.2A/min, final 230A.

Chamber is currently being pumped down.Good

 Monday, August 06, 2018, 00:04

Pressure at 3.6e-6 Torr. 

Initiate autoramping.

 Friday, August 10, 2018, 11:02

TGHT/TBHT have been at 450A(4.5V)/230A(2.9) for over 15 hours.

Pressure is stabilized at 5.2e-6 Torr. 

Initiated auto-cooling at 2A/min for TGHT and 1A/min for TBHT.

Thursday, July 05, 2018, 13:24

Target container was previously coated and sintered with TaC, also wrapped with Ta heat shields (see Evap2 elog# 410).

Loaded 201 discs of UCx with 7.27 cm in length + 5 extra discs for QC samples. 

One end-cap (coated/sintered TaC) inserted right, wrt the ionizer tube pointing down.

Left side is OPEN; a spring is inserted to hold the discs in place.

Chamber is currently being pumped down. 

TGHT will be ramped up to 495A/8.85V and TBHT to 230A/3.26V (same parameters used for sintering the container, evap2 elog#410).

Vacuum initial setting:

Good Vac = 5.0 e-5 Torr, Bad vac = 8.0 e-5 Torr.

pressure level will be monitored accordingly...

Auto-ramping setting

TGHT: 60 wait time, 0.2A/min, final 495A

TGHT: 60 wait time, 0.2A/min, final 230A.

 Thursday, July 05, 2018, 16:50

Tapping up TGHT to 40 A/0.49 V and TGHT to 40A/0.64V.

Vac slowly increasing from 5.0 e-6 Torr. 

Initiate auto-heating

 Tuesday, July 10, 2018, 10:46

Holding TGHT at 495A/5.3V for over 25 hours.  Pressure at 2.9e-6 Torr.

Initiate autocooling TGHT at 2A/min, TBHT 1.0A/min

 Wednesday, July 11, 2018, 17:12

Target was removed from the Evap; it is now in the Ar glovebox.  End cap is inserted. 

Target is ready for installation.

 Tuesday, March 20, 2018, 14:43

Target container was previously coated with TaC and sintered.

Container is wrapped with 3 layers of Ta-heat shield, including the center block

The target consists of 230 discs of UCx with 7.28cm in length [6 packs of 5 + 200 single discs].

Discs in target are arranged as follows: 1pack / 55singles / 1pack / 50singles / 2packs / 50singles / 1pack / 45singles / 1pack

A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down.

The right side is open with a TaC coated spring to help hold materials in.

An extra 5 single discs are loaded on the right side on top of the last pack, these discs will be removed after conditioning and analysed using SEM and XRD

The chamber is currently pumping down.

TGHT will be ramped up to 445A and TBHT will be ramped up to 230A [same parameters used to reach 1900C in evap2 when sintering TaC coating - elog402 evap2]

NOTE: This will be the first UCx target to go online using the TBHT in evap1 after the target is loaded with materials.

 Wednesday, March 21, 2018, 09:37

IGP1 = 2.47e-6 Torr

Tapped up manually to 40A.

TGHT = 40A, 0.61V

TBHT = 40A, 0.78V

Waited ~1hr, vacuum stable IG1 = 9.3e-6 Torr

Initiating auto-ramp for TGHT at a rate of 0.2A/min

Initiating auto-ramp for TBHT at a rate of 0.1A/min

Parameter setup: 5.0e-5 good vac, 8.0e-5 bad vac.

Wednesday, March 21, 2018, 13:02

TGHT = 57A, 0.72V

TBHT = 48A, 0.85V

IG1 = 5.8e-5 Torr

Vacuum stable.

Changing vacuum limits.

Vacuum limit stop at 3.0e-4 Torr, backing off at 6.0e-4 Torr.

 Monday, March 26, 2018, 09:32

TGHT = 450A, 4.54V

TBHT = 230A, 2.75V

IGP1 = 8.99e-7 Torr

Target has remained at max setpoint over weekend.

Initiating auto-cool at 1.0A/min for the TGHT and 0.5A/min for the TBHT.

 Wednesday, March 28, 2018, 11:31

Evap1 was vented in Ar and transferred to the glove box yesterday.

Inspection of target still required as well as 2nd endcap to be inserted.

 Wednesday, July 12, 2017, 17:06

Target container was previously coated with TaC and sintered.

Container is wrapped with 3 layers of Ta-heat shield, including the center block

The target consists of 400 discs of UCx with 13.60cm in length [8 packs of 5 + 360 single discs/ 2.6cm on left side, 2.8cm on right side wrt ionizer into page].

Discs in target are arranged as follows: 1pack / 60singles / 1pack / 60singles / 1pack / 60singles / 2packs / 60singles / 1pack / 60singles / 1pack / 60singles / 1pack

A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down.

The right side is open with a TaC coated spring to help hold materials in.

The chamber is currently pumping down.

TGHT will be ramped up to 450A at 0.1A/min [same current used to reach 1900C in evap2 when sintering TaC coating - elog373 evap2]

Parameter setup: 5.0e-5 good vac, 6.0e-5 bad vac.

Thursday, July 13, 2017, 12:49

Tapped up manually to 35A.

Waited ~2hrs, vacuum stable: IG1 = 2.64e-6 Torr

Initiating auto-ramp.

Laura Lambert wrote:

Wednesday, July 12, 2017, 17:06 Target container was previously coated with TaC and sintered. Container is wrapped with 3 layers of Ta-heat shield, including the center block The target consists of 400 discs of UCx with 13.60cm in length [8 packs of 5 + 360 single discs/ 2.6cm on left side, 2.8cm on right side wrt ionizer into page]. Discs in target are arranged as follows: 1pack / 60singles / 1pack / 60singles / 1pack / 60singles / 2packs / 60singles / 1pack / 60singles / 1pack / 60singles / 1pack A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down. The right side is open with a TaC coated spring to help hold materials in. The chamber is currently pumping down. TGHT will be ramped up to 450A at 0.1A/min [same current used to reach 1900C in evap2 when sintering TaC coating - elog373 evap2] Parameter setup: 5.0e-5 good vac, 6.0e-5 bad vac. Thursday, July 13, 2017, 12:49 Tapped up manually to 35A. Waited ~2hrs, vacuum stable: IG1 = 2.64e-6 Torr Initiating auto-ramp.

 Thursday, July 13, 2017, 14:48

Update: auto-ramp not started.

With recent updates to evap1 epics, not everything was uploaded correctly.

TGHT auto-ramp system not working: parameter boxes have white outline indicating locked.

No parameters can be inputed and therefore unable to start auto-ramp.

 Friday, July 14, 2017, 15:56

Problems still not fixed.

Have tapped up manually to 50A, 0.59V

Vacuum stable; IG1 = 5.26e-6 Torr.

Will remain at setpoints over weekend before continuing to ramp up manually...

 Monday, July 17, 2017, 15:10

New problems:

Paddle wheels for evap2 need replacing asap [see elog evap2 i.d.378]

In order to replace, supply/ return need to be turned off and a full purge; therefore, evap1 must be off otherwise it will trip off from no water.

Evap2 needs to be fixed asap and cannot wait for this process to be complete.

Evap1 had been tapped up manually to 60A.

Tapping down manually to 0A so one can start the paddle wheel replacement work tomorrow.

 Tuesday, July 18, 2017, 15:31

Paddle wheels for evap2 replaced and up and running again.

IG1 = 1.2e-6 Torr.

Starting to tap back-up manually...

Laura Lambert wrote:

Laura Lambert wrote:  Wednesday, July 12, 2017, 17:06 Target container was previously coated with TaC and sintered. Container is wrapped with 3 layers of Ta-heat shield, including the center block The target consists of 400 discs of UCx with 13.60cm in length [8 packs of 5 + 360 single discs/ 2.6cm on left side, 2.8cm on right side wrt ionizer into page]. Discs in target are arranged as follows: 1pack / 60singles / 1pack / 60singles / 1pack / 60singles / 2packs / 60singles / 1pack / 60singles / 1pack / 60singles / 1pack A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down. The right side is open with a TaC coated spring to help hold materials in. The chamber is currently pumping down. TGHT will be ramped up to 450A at 0.1A/min [same current used to reach 1900C in evap2 when sintering TaC coating - elog373 evap2] Parameter setup: 5.0e-5 good vac, 6.0e-5 bad vac. Thursday, July 13, 2017, 12:49 Tapped up manually to 35A. Waited ~2hrs, vacuum stable: IG1 = 2.64e-6 Torr Initiating auto-ramp.    Thursday, July 13, 2017, 14:48 Update: auto-ramp not started. With recent updates to evap1 epics, not everything was uploaded correctly. TGHT auto-ramp system not working: parameter boxes have white outline indicating locked. No parameters can be inputed and therefore unable to start auto-ramp.  Friday, July 14, 2017, 15:56 Problems still not fixed. Have tapped up manually to 50A, 0.59V Vacuum stable; IG1 = 5.26e-6 Torr. Will remain at setpoints over weekend before continuing to ramp up manually...  Monday, July 17, 2017, 15:10 New problems: Paddle wheels for evap2 need replacing asap [see elog evap2 i.d.378] In order to replace, supply/ return need to be turned off and a full purge; therefore, evap1 must be off otherwise it will trip off from no water. Evap2 needs to be fixed asap and cannot wait for this process to be complete. Evap1 had been tapped up manually to 60A. Tapping down manually to 0A so one can start the paddle wheel replacement work tomorrow.  Tuesday, July 18, 2017, 15:31 Paddle wheels for evap2 replaced and up and running again. IG1 = 1.2e-6 Torr. Starting to tap back-up manually...

 Wednesday, July 19, 2017, 14:12

TGHT auto-ramp fixed.

Since TBHT isn't hooked up yet, epics thinks TBHT has tripped off.

Currently during auto-ramp, every time steps up: states TBHT tripped off.

This is not the case but not a big deal as we will soon have TBHT hooked up and this won't be an issue.

Also it only states it, doesn't stop auto-ramp and therefore technically works fine/ will go with this for now...

Note: Might be a few spikes on striptool from past hour when IOC was rebooted.

Laura Lambert wrote:

Laura Lambert wrote: Laura Lambert wrote:  Wednesday, July 12, 2017, 17:06 Target container was previously coated with TaC and sintered. Container is wrapped with 3 layers of Ta-heat shield, including the center block The target consists of 400 discs of UCx with 13.60cm in length [8 packs of 5 + 360 single discs/ 2.6cm on left side, 2.8cm on right side wrt ionizer into page]. Discs in target are arranged as follows: 1pack / 60singles / 1pack / 60singles / 1pack / 60singles / 2packs / 60singles / 1pack / 60singles / 1pack / 60singles / 1pack A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down. The right side is open with a TaC coated spring to help hold materials in. The chamber is currently pumping down. TGHT will be ramped up to 450A at 0.1A/min [same current used to reach 1900C in evap2 when sintering TaC coating - elog373 evap2] Parameter setup: 5.0e-5 good vac, 6.0e-5 bad vac. Thursday, July 13, 2017, 12:49 Tapped up manually to 35A. Waited ~2hrs, vacuum stable: IG1 = 2.64e-6 Torr Initiating auto-ramp.    Thursday, July 13, 2017, 14:48 Update: auto-ramp not started. With recent updates to evap1 epics, not everything was uploaded correctly. TGHT auto-ramp system not working: parameter boxes have white outline indicating locked. No parameters can be inputed and therefore unable to start auto-ramp.  Friday, July 14, 2017, 15:56 Problems still not fixed. Have tapped up manually to 50A, 0.59V Vacuum stable; IG1 = 5.26e-6 Torr. Will remain at setpoints over weekend before continuing to ramp up manually...  Monday, July 17, 2017, 15:10 New problems: Paddle wheels for evap2 need replacing asap [see elog evap2 i.d.378] In order to replace, supply/ return need to be turned off and a full purge; therefore, evap1 must be off otherwise it will trip off from no water. Evap2 needs to be fixed asap and cannot wait for this process to be complete. Evap1 had been tapped up manually to 60A. Tapping down manually to 0A so one can start the paddle wheel replacement work tomorrow.  Tuesday, July 18, 2017, 15:31 Paddle wheels for evap2 replaced and up and running again. IG1 = 1.2e-6 Torr. Starting to tap back-up manually...    Wednesday, July 19, 2017, 14:12 TGHT auto-ramp fixed. Since TBHT isn't hooked up yet, epics thinks TBHT has tripped off. Currently during auto-ramp, every time steps up: states TBHT tripped off. This is not the case but not a big deal as we will soon have TBHT hooked up and this won't be an issue. Also it only states it, doesn't stop auto-ramp and therefore technically works fine/ will go with this for now... Note: Might be a few spikes on striptool from past hour when IOC was rebooted.

 Wednesday, July 19, 2017, 14:16

Tapped up manually to 30A yesterday.

Continued manual tap up today and reached 60A.

Initiated auto-ramp.

IG1 = 4.4e-6 Torr

Laura Lambert wrote:

Laura Lambert wrote: Laura Lambert wrote: Laura Lambert wrote:  Wednesday, July 12, 2017, 17:06 Target container was previously coated with TaC and sintered. Container is wrapped with 3 layers of Ta-heat shield, including the center block The target consists of 400 discs of UCx with 13.60cm in length [8 packs of 5 + 360 single discs/ 2.6cm on left side, 2.8cm on right side wrt ionizer into page]. Discs in target are arranged as follows: 1pack / 60singles / 1pack / 60singles / 1pack / 60singles / 2packs / 60singles / 1pack / 60singles / 1pack / 60singles / 1pack A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down. The right side is open with a TaC coated spring to help hold materials in. The chamber is currently pumping down. TGHT will be ramped up to 450A at 0.1A/min [same current used to reach 1900C in evap2 when sintering TaC coating - elog373 evap2] Parameter setup: 5.0e-5 good vac, 6.0e-5 bad vac. Thursday, July 13, 2017, 12:49 Tapped up manually to 35A. Waited ~2hrs, vacuum stable: IG1 = 2.64e-6 Torr Initiating auto-ramp.    Thursday, July 13, 2017, 14:48 Update: auto-ramp not started. With recent updates to evap1 epics, not everything was uploaded correctly. TGHT auto-ramp system not working: parameter boxes have white outline indicating locked. No parameters can be inputed and therefore unable to start auto-ramp.  Friday, July 14, 2017, 15:56 Problems still not fixed. Have tapped up manually to 50A, 0.59V Vacuum stable; IG1 = 5.26e-6 Torr. Will remain at setpoints over weekend before continuing to ramp up manually...  Monday, July 17, 2017, 15:10 New problems: Paddle wheels for evap2 need replacing asap [see elog evap2 i.d.378] In order to replace, supply/ return need to be turned off and a full purge; therefore, evap1 must be off otherwise it will trip off from no water. Evap2 needs to be fixed asap and cannot wait for this process to be complete. Evap1 had been tapped up manually to 60A. Tapping down manually to 0A so one can start the paddle wheel replacement work tomorrow.  Tuesday, July 18, 2017, 15:31 Paddle wheels for evap2 replaced and up and running again. IG1 = 1.2e-6 Torr. Starting to tap back-up manually...    Wednesday, July 19, 2017, 14:12 TGHT auto-ramp fixed. Since TBHT isn't hooked up yet, epics thinks TBHT has tripped off. Currently during auto-ramp, every time steps up: states TBHT tripped off. This is not the case but not a big deal as we will soon have TBHT hooked up and this won't be an issue. Also it only states it, doesn't stop auto-ramp and therefore technically works fine/ will go with this for now... Note: Might be a few spikes on striptool from past hour when IOC was rebooted.    Wednesday, July 19, 2017, 14:16 Tapped up manually to 30A yesterday. Continued manual tap up today and reached 60A. Initiated auto-ramp. IG1 = 4.4e-6 Torr

 Thursday, July 20, 2017, 14:48

TGHT tripped off yesterday evening 

Auto-ramping was fixed but a few more glitches in the system caused the TGHT to trip.

Please refer to photos.

When auto-ramp is running and vacuum reaches the parameter set for 'Good Vacuum', the auto-ramp should stop until the vacuum drops below the good vacuum at which point it can then continue to auto-ramp.

When auto-ramp is running and vacuum reaches the parameter set for 'Bad Vacuum', the auto-ramp should initiate auto-cool/ramp-down until the vacuum drops to the good vacuum parameter at which point it can then proceed with the 'Good Vacuum' requirement.

With this scenario, the auto-ramp system ignored the parameters set for good and bad vacuum, proceeded past both points and continued to ramp until the vacuum eventually reached it's trip off vacuum causing the TGHT to trip.

The TGHT current was at ~90A when it tripped off, so the target should be OK.

Laura Lambert wrote:

Laura Lambert wrote: Laura Lambert wrote: Laura Lambert wrote: Laura Lambert wrote:  Wednesday, July 12, 2017, 17:06 Target container was previously coated with TaC and sintered. Container is wrapped with 3 layers of Ta-heat shield, including the center block The target consists of 400 discs of UCx with 13.60cm in length [8 packs of 5 + 360 single discs/ 2.6cm on left side, 2.8cm on right side wrt ionizer into page]. Discs in target are arranged as follows: 1pack / 60singles / 1pack / 60singles / 1pack / 60singles / 2packs / 60singles / 1pack / 60singles / 1pack / 60singles / 1pack A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down. The right side is open with a TaC coated spring to help hold materials in. The chamber is currently pumping down. TGHT will be ramped up to 450A at 0.1A/min [same current used to reach 1900C in evap2 when sintering TaC coating - elog373 evap2] Parameter setup: 5.0e-5 good vac, 6.0e-5 bad vac. Thursday, July 13, 2017, 12:49 Tapped up manually to 35A. Waited ~2hrs, vacuum stable: IG1 = 2.64e-6 Torr Initiating auto-ramp.    Thursday, July 13, 2017, 14:48 Update: auto-ramp not started. With recent updates to evap1 epics, not everything was uploaded correctly. TGHT auto-ramp system not working: parameter boxes have white outline indicating locked. No parameters can be inputed and therefore unable to start auto-ramp.  Friday, July 14, 2017, 15:56 Problems still not fixed. Have tapped up manually to 50A, 0.59V Vacuum stable; IG1 = 5.26e-6 Torr. Will remain at setpoints over weekend before continuing to ramp up manually...  Monday, July 17, 2017, 15:10 New problems: Paddle wheels for evap2 need replacing asap [see elog evap2 i.d.378] In order to replace, supply/ return need to be turned off and a full purge; therefore, evap1 must be off otherwise it will trip off from no water. Evap2 needs to be fixed asap and cannot wait for this process to be complete. Evap1 had been tapped up manually to 60A. Tapping down manually to 0A so one can start the paddle wheel replacement work tomorrow.  Tuesday, July 18, 2017, 15:31 Paddle wheels for evap2 replaced and up and running again. IG1 = 1.2e-6 Torr. Starting to tap back-up manually...    Wednesday, July 19, 2017, 14:12 TGHT auto-ramp fixed. Since TBHT isn't hooked up yet, epics thinks TBHT has tripped off. Currently during auto-ramp, every time steps up: states TBHT tripped off. This is not the case but not a big deal as we will soon have TBHT hooked up and this won't be an issue. Also it only states it, doesn't stop auto-ramp and therefore technically works fine/ will go with this for now... Note: Might be a few spikes on striptool from past hour when IOC was rebooted.    Wednesday, July 19, 2017, 14:16 Tapped up manually to 30A yesterday. Continued manual tap up today and reached 60A. Initiated auto-ramp. IG1 = 4.4e-6 Torr    Thursday, July 20, 2017, 14:48 TGHT tripped off yesterday evening  Auto-ramping was fixed but a few more glitches in the system caused the TGHT to trip. Please refer to photos. When auto-ramp is running and vacuum reaches the parameter set for 'Good Vacuum', the auto-ramp should stop until the vacuum drops below the good vacuum at which point it can then continue to auto-ramp. When auto-ramp is running and vacuum reaches the parameter set for 'Bad Vacuum', the auto-ramp should initiate auto-cool/ramp-down until the vacuum drops to the good vacuum parameter at which point it can then proceed with the 'Good Vacuum' requirement. With this scenario, the auto-ramp system ignored the parameters set for good and bad vacuum, proceeded past both points and continued to ramp until the vacuum eventually reached it's trip off vacuum causing the TGHT to trip. The TGHT current was at ~90A when it tripped off, so the target should be OK.

 Thursday, July 20, 2017, 15:14

Turns out the auto-ramp was reading the vacuum of 'IGP1' which is what the old ion gauge used to be called for evap1 and is currently one on evap2

AKA attempting to take a vacuum reading from one that doesn't exist for evap1

This ion gauge is now labelled 'IGP' and the auto-ramp system now uses 'IGP' for the vacuum parameter confirmations.

Changed a few things in the auto-ramp system:

-Updated messages.

-Auto-ramp aborts when TGHT/TBHT trips off.

-Displays setpoint it is ramping up to for next step

-Confirms which ion gauge it is reading

-Displays final setpoint and increment on message board

-No longer displays TBHT as 'tripped off' when not running.

System updated.

Laura Lambert wrote:

Laura Lambert wrote: Laura Lambert wrote: Laura Lambert wrote: Laura Lambert wrote: Laura Lambert wrote:  Wednesday, July 12, 2017, 17:06 Target container was previously coated with TaC and sintered. Container is wrapped with 3 layers of Ta-heat shield, including the center block The target consists of 400 discs of UCx with 13.60cm in length [8 packs of 5 + 360 single discs/ 2.6cm on left side, 2.8cm on right side wrt ionizer into page]. Discs in target are arranged as follows: 1pack / 60singles / 1pack / 60singles / 1pack / 60singles / 2packs / 60singles / 1pack / 60singles / 1pack / 60singles / 1pack A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down. The right side is open with a TaC coated spring to help hold materials in. The chamber is currently pumping down. TGHT will be ramped up to 450A at 0.1A/min [same current used to reach 1900C in evap2 when sintering TaC coating - elog373 evap2] Parameter setup: 5.0e-5 good vac, 6.0e-5 bad vac. Thursday, July 13, 2017, 12:49 Tapped up manually to 35A. Waited ~2hrs, vacuum stable: IG1 = 2.64e-6 Torr Initiating auto-ramp.    Thursday, July 13, 2017, 14:48 Update: auto-ramp not started. With recent updates to evap1 epics, not everything was uploaded correctly. TGHT auto-ramp system not working: parameter boxes have white outline indicating locked. No parameters can be inputed and therefore unable to start auto-ramp.  Friday, July 14, 2017, 15:56 Problems still not fixed. Have tapped up manually to 50A, 0.59V Vacuum stable; IG1 = 5.26e-6 Torr. Will remain at setpoints over weekend before continuing to ramp up manually...  Monday, July 17, 2017, 15:10 New problems: Paddle wheels for evap2 need replacing asap [see elog evap2 i.d.378] In order to replace, supply/ return need to be turned off and a full purge; therefore, evap1 must be off otherwise it will trip off from no water. Evap2 needs to be fixed asap and cannot wait for this process to be complete. Evap1 had been tapped up manually to 60A. Tapping down manually to 0A so one can start the paddle wheel replacement work tomorrow.  Tuesday, July 18, 2017, 15:31 Paddle wheels for evap2 replaced and up and running again. IG1 = 1.2e-6 Torr. Starting to tap back-up manually...    Wednesday, July 19, 2017, 14:12 TGHT auto-ramp fixed. Since TBHT isn't hooked up yet, epics thinks TBHT has tripped off. Currently during auto-ramp, every time steps up: states TBHT tripped off. This is not the case but not a big deal as we will soon have TBHT hooked up and this won't be an issue. Also it only states it, doesn't stop auto-ramp and therefore technically works fine/ will go with this for now... Note: Might be a few spikes on striptool from past hour when IOC was rebooted.    Wednesday, July 19, 2017, 14:16 Tapped up manually to 30A yesterday. Continued manual tap up today and reached 60A. Initiated auto-ramp. IG1 = 4.4e-6 Torr    Thursday, July 20, 2017, 14:48 TGHT tripped off yesterday evening  Auto-ramping was fixed but a few more glitches in the system caused the TGHT to trip. Please refer to photos. When auto-ramp is running and vacuum reaches the parameter set for 'Good Vacuum', the auto-ramp should stop until the vacuum drops below the good vacuum at which point it can then continue to auto-ramp. When auto-ramp is running and vacuum reaches the parameter set for 'Bad Vacuum', the auto-ramp should initiate auto-cool/ramp-down until the vacuum drops to the good vacuum parameter at which point it can then proceed with the 'Good Vacuum' requirement. With this scenario, the auto-ramp system ignored the parameters set for good and bad vacuum, proceeded past both points and continued to ramp until the vacuum eventually reached it's trip off vacuum causing the TGHT to trip. The TGHT current was at ~90A when it tripped off, so the target should be OK.    Thursday, July 20, 2017, 15:14 Turns out the auto-ramp was reading the vacuum of 'IGP1' which is what the old ion gauge used to be called for evap1 and is currently one on evap2 AKA attempting to take a vacuum reading from one that doesn't exist for evap1 This ion gauge is now labelled 'IGP' and the auto-ramp system now uses 'IGP' for the vacuum parameter confirmations. Changed a few things in the auto-ramp system: -Updated messages. -Auto-ramp aborts when TGHT/TBHT trips off. -Displays setpoint it is ramping up to for next step -Confirms which ion gauge it is reading -Displays final setpoint and increment on message board -No longer displays TBHT as 'tripped off' when not running. System updated.

Thursday, July 20, 2017, 15:57

Tapped up manually to 35A, 0.45V

IG1 = 5.26e-6 Torr

Re-initiated auto-ramp at 0.1A/min.

 Friday, July 21, 2017, 13:50

TGHT = 81A, 0.92V

IG1 = 5.2e-5 Torr

Vacuum currently yo-yo-ing, but stable.

Changing vacuum limits.

Vacuum limit stop at 1.0e-4 Torr, backing off at 5.0e-4 Torr.

TP = 28.4C, RT = 27.3C

 Thursday, July 27, 2017, 09:02

TGHT = 431A, 4.37V

IG1 = 1.32e-5 Torr

Vacuum stable.

Increasing ramping rate to 0.2A/min

TP = 26.7C, RT = 22.0C

 Friday, July 28, 2017, 09:35

TGHT = 450A, 4.59V

IG1 = 5.4e-6 Torr

Target has remained at max setpoint for 23hrs.

TP = 25.9C, RT = 19.5C

Initiating auto-cool at 1.0A/min

 Friday, August 04, 2017, 13:59

Evap1 was vented in Ar and transferred to the glove box on monday.

A few discs on opened end had slightly shifted [see photo], discs moved back in place - can see down into target.

Discoloration of Ta container to gold in some spots - this is normal as seen with most UCx targets

Target looks good.

Still requires 2nd endcap to be inserted.

 Monday, August 21, 2017, 11:13

Both endcaps in.

No Rh foil inserted.

Endcaps require expanding.

 Thursday, April 20, 2017, 11:31

Target container was previously coated with TaC spray and sintered.

Container is wrapped with 3 layers of Ta-heat shield, including the center block

The target consists of 220 discs of UCx with 7.55cm in length [6 packs of 5 + 190 single discs].

Discs in target are arranged as follows: 1pack / 45singles / 1pack / 50singles / 2packs / 50singles / 1pack / 45singles / 1pack

A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down.

The right side is open with a TaC coated spring to help hold materials in.

The chamber is currently pumping down.

TGHT will be ramped up to 490A at 0.1A/min [same current used to reach 1900C in evap2 when sintering TaC coating - elog350 evap2]

Parameter setup: 5.0e-5 good vac, 6.0e-5 bad vac.

 Friday, April 21, 2017, 10:14

IG1 = 2.47e-6 Torr

Tapped up manually to 35A.

Waited ~1.5hrs, vacuum stable IG1 = 2.37e-6 Torr

Initiating auto-ramp.

 Thursday, April 27, 2017, 09:19

IG1 = 4.611e-6 Torr

TGHT = 490A, 4.93V

Target has remained at max setpoints for ~9hrs.

Initiating auto-cool at 1.0A/min

 Tuesday, May 16, 2017, 13:21

Update: 

Target looks good, see photos attached post sintering.

Gold tint on container commonly seen with the Uranium targets.

Orange colouring on inside of container end - also common.

Both endcaps in and handed off to assembly yesterday.