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.

 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.

 Thursday, February 16, 2017, 15:04

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 200 discs of UCx with 7.3cm in length [6 packs of 5 + 170 single discs].

Discs in target are arranged as follows: 5singles / 1pack / 40singles / 1pack / 40singles / 2packs / 40singles / 1pack / 40singles / 1pack / 5singles

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 475A at 0.1A/min [same current used to reach 1900C in evap2 when sintering TaC coating - elog340 evap2]

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

NOTE: small bug in evap1 IOC. when current is tapped up 1A, it auto-taps back down 0.01A. should be OK, but will keep an eye on evaporator during conditioning process and acct for changes.

 Friday, February 17, 2017, 09:56

IG1 = 1.56e-6 Torr

Tapped up manually to 35A

Vacuum stable.

IG1 = 1.56e-6 Torr.

Initiating auto-ramp.

 Friday, February 24, 2017, 15:09

Local TGHT 473 A 4.63 V

Monday, February 27, 2017, 09:06 

Target has remained at max setpoints for 20+hrs [epics problems and archives currently not working so unable to find out exact time]

TGHT = 475A, 4.67V

IG1 = 1.48e-6 Torr

Conditioning process is now complete.

Initiating auto-cool at 1.0A/min

 Tuesday, February 28, 2017, 12:00

UCx conditioning process complete.

Vented in Ar and transferred to glove box this morning.

 Tuesday, April 11, 2017, 09:44

A few photos taken of the target post-conditioning.

Note a few flakes came out from one end - end disc from 'open' side flaked off.

 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.

 Wednesday, October 19, 2016, 16:47

Target container was previously coated with TaC spray and sintered.

Container is wrapped with 3 layers of Ta-heat shield, including the center block using one single foil/ layer

The target consists of 165 discs of UCx with 5.4cm in length

Materials: 4 packs of 5 {all made with 'modified' UC2cast} + 145 single discs{20 from 'modified cast'}

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 430A at 0.1A/min [same current used to reach 1900C in evap2 when sintering TaC coating - elog327 evap2]

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

Thursday, October 20, 2016, 10:11

Tapped up manually to 40A

Vacuum stable.

IG1 = 4.45e-6 Torr.

Initiating auto-ramp.

 Monday, October 24, 2016, 11:19

TGHT = 254A, 2.46V

Still ramping up...~half way to final setpoint

Vacuum dropped, looks good, IG1 = 6.77e-6 Torr

 Wednesday, October 26, 2016, 09:38

Target has remained at max setpoints for ~16hrs.

TGHT = 430A, 4.25V

IG1 = 2.3e-6 Torr

Conditioning/ re-carbonization process is now complete.

Initiating auto-cool at 1.0A/min

 Thursday, October 27, 2016, 15:35

UCx done.

Vented in Ar and transferred to glove box.

Looked inside before inserting 2nd endcap - clean view all the way through the materials to the endcap/ no visible shifting.

Ta coated spring helped hold materials in place, materials expanded minimally ~0.5cm

Pushed materials back to desired length.

Successfully removed a single disc for further analysis.

Second endcap now in with 2x graphite foils.

Both endcaps need expanding.

Ready for assembly.

Requires Rh foil - to be inserted during assembly.

Monday, July 11, 2016, 15:54

Target container was previously coated with TaC spray and sintered.

Container is wrapped with 3 layers of Ta-heat shield, including the center block - new wrapping method-see elog112 evap2

The target consists of 216 discs of UCx with 7.6cm in length [4 packs of 5 + 196 single discs].

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 410A at 0.1A/min [same current used to reach 1900C in evap2 when sintering TaC coating - elog308 evap2]

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

 Tuesday, July 12, 2016, 08:50

IG1 = 5.3e-6 Torr

Tapped up manually to 35A

Vacuum stable.

IG1 = 5.25e-6 Torr.

Initiating auto-ramp.

 Friday, July 15, 2016, 16:59

With evap2 not working, water was turned off to check valves...this tripped off evap1 since this also turned off the water to evap1.

TGHT was ~115A when evap1 tripped off.

Vacuum stable = 2.9e-6 Torr.

Tapped back up manually to 115A, 1.08V

Vacuum stable = 2.8e-6 Torr.

Restarting auto ramp at 0.1A/min.

 Friday, July 22, 2016, 16:25

Target has remained at max setpoints for 4.5days.

TGHT = 410A, 3.99V

IG1 = 2.5e-6 Torr

Voltage has wavered a small amount, between 3,91V-4.02V; this can be seen in the photo attached of the screenshot of the striptool.

Conditioning process is now complete.

Initiating auto-cool at 1.0A/min

 Tuesday, July 26, 2016, 16:48

Vented in Ar and currently transfering into glove box

will update elog tomorrow...

 Wednesday, July 27, 2016, 14:56

had a few problems with the transfer chamber in the glove box, but managed to get the target into the glove box okay last night.

was exposed to oxygen for minimal amount of time - transfer chamber wasnt flushing properly/ leak in james bond box

 Thursday, May 10, 2018, 16:00 

Graphite insert fully loaded with UCx was loaded into previously TaC coated target container.

No end caps on Ta target container.

Weight of graphite tube + UCx discs = 27 g

Currently pumping down in evap1.

Friday, May 11, 2018, 11:41 

IGP1 = 1.13e-6 Torr

Good vac at 3.0e-4, bad vac at 6.0e-4 Torr.

Tapped up manually to 100A.

Pressure increased to ~2e-5 Torr

Vacuum stabilized after 40 min

IGP1 = 1e-5 Torr

Initiating auto ramp for TGHT @ 20 A/min to a max setpoint of 520 A

Initiating auto ramp for TBHT @ 10 A/min to a max setpoint of 245 A

Preassure increased o 1e-4 Torr and the auto ramp was aborted

After 8 min IGP1 = 3e-5 Torr

Initiating auto ramp for TGHT @ 10 A/min to a max setpoint of 520 A

Initiating auto ramp for TBHT @ 5 A/min to a max setpoint of 245 A

The vacuum is more stable.

TBHT reached 230 A at 13:00

TGHT reached 520 A at 13:24

Final pressure 1.15e-4 Torr

Target will stay at max current point for a week.

 Friday, May 18, 2018, 18:31

Evap1 was vented in Ar and UCx target was transferred to the glove box

 Monday, September 03, 2018, 10:17

Graphite insert fully loaded with UCx was loaded into previously TaC coated target container.

No end caps on Ta target container.

Weight of graphite tube + UCx discs = 27.118 g

Currently pumping down in evap1.

Tuesday, September 04, 2018, 10:17 

IGP1 = 4.02e-6 Torr

Tapped up TBHT and TGHT manually to 100 A @1 A/s with pauses of 20 s.

Wait for 40 min to pressure to stabilize.

Max pressure 1.38e-4 Torr.

Final pressure 5.93e-5 Torr.

Tuesday, September 04, 2018, 11:46 

Good vacuum 5e-1 Torr

Bad vacuum 8e-1 Torr

Initiating auto ramp for TGHT @ 10 A/min to a max setpoint of 520 A

Initiating auto ramp for TBHT @ 5 A/min to a max setpoint of 245 A

 After achieving 520 A with auto ramp, manually tapped to 599 A.

Manually tapped back to 550 A.

Marla Cervantes wrote:

Monday, September 03, 2018, 10:17 Graphite insert fully loaded with UCx was loaded into previously TaC coated target container. No end caps on Ta target container. Weight of graphite tube + UCx discs = 27.118 g Currently pumping down in evap1. Tuesday, September 04, 2018, 10:17  IGP1 = 4.02e-6 Torr Tapped up TBHT and TGHT manually to 100 A @1 A/s with pauses of 20 s. Wait for 40 min to pressure to stabilize. Max pressure 1.38e-4 Torr. Final pressure 5.93e-5 Torr. Tuesday, September 04, 2018, 11:46  Good vacuum 5e-1 Torr Bad vacuum 8e-1 Torr Initiating auto ramp for TGHT @ 10 A/min to a max setpoint of 520 A Initiating auto ramp for TBHT @ 5 A/min to a max setpoint of 245 A  Tuesday, September 04, 2018, 12:54  After achieving 520 A with auto ramp, manually tapped to 599 A. Manually tapped back to 550 A.

 Friday, September 21, 2018, 10:21

Ramping down heaters at 2 A/min and 1 A/min for TGHT and TBHT.

Marla Cervantes wrote:

Monday, September 03, 2018, 10:17 Graphite insert fully loaded with UCx was loaded into previously TaC coated target container. No end caps on Ta target container. Weight of graphite tube + UCx discs = 27.118 g Currently pumping down in evap1. Tuesday, September 04, 2018, 10:17  IGP1 = 4.02e-6 Torr Tapped up TBHT and TGHT manually to 100 A @1 A/s with pauses of 20 s. Wait for 40 min to pressure to stabilize. Max pressure 1.38e-4 Torr. Final pressure 5.93e-5 Torr. Tuesday, September 04, 2018, 11:46  Good vacuum 5e-1 Torr Bad vacuum 8e-1 Torr Initiating auto ramp for TGHT @ 10 A/min to a max setpoint of 520 A Initiating auto ramp for TBHT @ 5 A/min to a max setpoint of 245 A  Tuesday, September 04, 2018, 12:54  After achieving 520 A with auto ramp, manually tapped to 599 A. Manually tapped back to 550 A.

 Saturday, September 29, 2018, 20:52

Target is taken out from the chamber and transferred to the Ar glove box.

Friday, March 20, 2015, 15:17 

Target container was previously coated with TaC spray and sintered.

It's is wrapped with 3 layers of Ta-heat shield, including the center block.

The target consists of 225 discs of UCx with 9.2cm in length.

Packing step was skipped for first time, loaded singular discs into target container, no binder holding discs together.

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

The chamber is currently pumping down.

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

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

Auto ramp at 0.1A/min.

 Monday, March 23, 2015, 09:09

IOC has been rebooted.

Ion gauge won't turn on - goes into drive, then times out...

 Monday, March 23, 2015, 15:06

Both filaments in IG1 are burnt out.

EVAP1 will be vented tomorrow morning.

UCx will be placed in the pelican case under argon while the filaments are being replaced in the morning.

 Tuesday, March 24, 2015, 11:27

Vented in argon and placed target in pelican case.

Ion gauge replaced this morning.

Continued purging evap1 and re-installed UCx back into evap1.

Currently pumping back down.

 Wednesday, March 25, 2015, 09:38

IG1 = 8.65e-7 Torr

Tapped up evap1 manually to 40A.

Waited ~20min.

Vaccuum stable.

IGP1 = 7.75e-7 Torr.

Initiating auto-ramp.

 Wednesday, April 01, 2015, 15:07

TGHT has reached 520A, 5.82V - YAY!

Will continue to heat overnight and initiate ramp-down/ cooling tomorrow morning.

Slightly shorter time frame to reach max setpoints than normal - possibly due to lack of binder/ skipping packing process.

Great timing before the long weekend 

 Thursday, April 02, 2015, 09:20

Target has been conditioned at max setpoints for 20hours.

Auto-cooling ramp down initiated at 2.0A/min.

 Thursday, April 09, 2015, 16:02

Vented in argon and removed from evap1 tuesday.

Appears as though some discs may be slightly displaced, pictures to follow...

Thursday, October 15, 2015, 15:52

Target container previously sintered with TaC in Evap#2 - Target current at 440A, temp measured at 1900C.  A few tests on the temp measured were done (see Evap#2 elog #251 & 252). 
Note:  This is the new design container with a small back block.

Container is loaded with 245 discs of UC2; measured disc length 7.5 cm

A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down, so the right is open - discs are held on with Ta wire spring.

3 layers of Ta-heat shield is used. 

Target heater will be ramped up to 440A (according to the achieved temperature from Evap#2). 

Ramping rate at 0.1A/min.

Monitor closely on the vacuum around 400A to see if the carbonization process is complete. 

Chamber is currently being pumped down. 

 Friday, October 16, 2015, 10:33

Chamber has pumped down to 2e-6 Torr. 

Stepping up TGHT to 70A/0.23V. 

 Friday, October 16, 2015, 14:55

TGHT stepped up to 70A, pressure went to max 5.7e-5 Torr and it's coming down.

Initated autoramping.  (good vac at 5e-5 Torr, bad at 6.0e-5 Torr)

 Thursday, October 22, 2015, 12:26

TGHT has reached 440A/4.403V and stablized for about 5 hours. 

Pressure started coming down at around 370A which indicated the ending of the carbonization process. 

Currently vacuum is at 5.6e-6 torr. 

Initiated cooling down process at 2A/min.

John Wong wrote:

Thursday, October 15, 2015, 15:52 Target container previously sintered with TaC in Evap#2 - Target current at 440A, temp measured at 1900C.  A few tests on the temp measured were done (see Evap#2 elog #251 & 252).  Note:  This is the new design container with a small back block. Container is loaded with 245 discs of UC2; measured disc length 7.5 cm A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down, so the right is open - discs are held on with Ta wire spring. 3 layers of Ta-heat shield is used.  Target heater will be ramped up to 440A (according to the achieved temperature from Evap#2).  Ramping rate at 0.1A/min. Monitor closely on the vacuum around 400A to see if the carbonization process is complete.  Chamber is currently being pumped down.   Friday, October 16, 2015, 10:33 Chamber has pumped down to 2e-6 Torr.  Stepping up TGHT to 70A/0.23V.   Friday, October 16, 2015, 14:55 TGHT stepped up to 70A, pressure went to max 5.7e-5 Torr and it's coming down. Initated autoramping.  (good vac at 5e-5 Torr, bad at 6.0e-5 Torr)  Thursday, October 22, 2015, 12:26 TGHT has reached 440A/4.403V and stablized for about 5 hours.  Pressure started coming down at around 370A which indicated the ending of the carbonization process.  Currently vacuum is at 5.6e-6 torr.  Initiated cooling down process at 2A/min.

 Monday, October 26, 2015, 16:18

Target vented in argon, taken out and currently in glove box.

Target looks good, last one of the year! 

Endcaps inserted and need to be expanded, Rh foil still needs to be added.

 Thursday, February 18, 2016, 15:34

Target container was previously coated with TaC spray and sintered.

Container is wrapped with 3 layers of Ta-heat shield, including the center block - same method as for sintering TaC coating [new wrapping method-see elog112 eva2].

The target consists of 244 discs of UCx with 7.8cm in length.

A regular TaC coated endcap is inserted left, wrt the ionizer tube pointing down, so the right is open

The chamber is currently pumping down.

TGHT will be ramped up to 520A at 0.1A/min

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

 Friday, February 19, 2016, 08:28

IG1 = 4.7e-6 Torr

Tapped up manually to 35A.

Waited ~1hr, vacuum stable

IG1 = 3.8e-6 Torr.

Initiating auto-ramp.