Laura Lambert wrote:

John Wong wrote: Laura Lambert wrote:  Thursday, October 02, 2014, 11:51 Target container sprayed with TaC, currently drying in fume hood  Monday, October 06, 2014, 12:11 Target container & back block is wrapped with 3 layers of Ta-heat shield.  The chamber has been pumped down over the weekend.  Pressure currently at 2.23e-7 Torr.  HS water valves open; no leaks detected. TGHT will be ramped up to 580A at 0.2A/min TBHT will be ramped up to 230A at 0.2A/min.    Monday, October 06, 2014, 12:16 Stepped up both TGHT/TBHT to 35A.  Tuesday, October 07, 2014, 12:54 TBHT reached to 230A/3.7V and TGHT is still ramping up, currently at 303A/4.5V. Temp measured with Omega-IR2 = 1165C with e'=0.85 Pressure @ 5.2e-7 Torr.  Increase ramping rate to 2A/min.  Tuesday, October 07, 2014, 16:21 TGHT is now at 580A and TGHT at 230A. Temperature is measured with OMEGA-IR2, MIKRON, and analog pyrometer - All the measurements are agreed at 1700C (without the tantalum emissivity correction of 250C) The OMEGA-IR2 slope has changed to 0.97 for the correction - The real temperature reading from the display is showing 1935C. Now... attempting to low TBHT to see any temperature change.  Tuesday, October 07, 2014, 17:01 TGHT @ 580A. TBHT = 180C, Temp = 1925C TBHT = 130C, Temp = 1920C Not much of change in the temperature on the target tube... Tuesday, October 07, 2014, 17:07 Attempting to increase the temperature to 2000C TGHT = 600A, Temp = 1955C TGHT = 620A, Temp = 2000C Target will continue heating at this temperature overnight... Will continue to monitor.  Tuesday, October 07, 2014, 20:59 After almost 4 hours of heating at 620A on TGHT, the temperature has dropped to 1980C.   Pressure is coming down to 1.17e-6 Torr.   Increased TGHT to 630A to maintain temp @ 2000C    Wednesday, October 08, 2014, 11:46 Temperature readout from omega-IR2C = 2054C TGHT = 11.14V, 628.0A TBHT = 2.01V, 129.8A IGP1 = 8.2e-7Torr Initiating auto-cool for TGHT @ 2A/min, TBHT @ 1A/min  Thursday, October 09, 2014, 16:00 vented in air and opened up this morning target container looks good!

 Thursday, October 09, 2014, 16:36

Photos for the OMEGA-IR2C temp measurement can be found on this link (see also the subfolder for the heating process):

https://www.dropbox.com/sh/n5sxcepg7e847xw/AACMubuKW1idd49D1Nz_0diNa?dl=0

Monday, November 10, 2014, 13:51

target container was sprayed with TaC on friday and sintered over the weekend.
vented and removed from evap2 this morning, looks good.

this container will be used as a round2 for UCx #11 since the last container broke as it was being assembled.

hopefully all the materials can be recovered and re-used/re-loaded into the new container...

 Wednesday, November 19, 2014, 15:10

currently pumping down

 Wednesday, November 19, 2014, 15:28

container is wrapped with 3 x Ta-heat shield

leak check done

Starting voltage = -0.017mV

TGHT = 0A, 0V

TBHT = 0A, 0V

IGP1 = 1.7e-6 Torr

 Wednesday, November 19, 2014, 16:33

Tapped TGHT up manually to 100A

DV [direct voltage] = 0.33V

TGHT = 109A

TBHT = 0A

IGP1 = 1.3e-6 Torr

Initiating auto-ramp of TGHT to 400A at 2A/min

 Thursday, November 20, 2014, 09:49

DV = 3.47V

OMEGA = 1645C

TGHT = 401A, 6.49V

TBHT = 0

IGP1 = 4.5e-7Torr

TGHT finished auto-ramping ~19:00 last night

initiating manual tap up to 2000 celsius or 580A [whichever is higher] and recording activity

 Friday, November 21, 2014, 12:50

TGHT was ramped up to 580A yesterday and left overnight.

In the picture attached one can see the TGHT current has remained constant at 578A [red = TGHT current, green = TGHT voltage]

The vacuum has slowly gone down as expected.

However, the DV, TGHT voltage and temperature have deviated. They have dipped up and down several times throughout the night. The first deviation was observed ~3.5hours after it reached its target of 580A.

DV reached 6.02V [when TGHT initially hit 580A] and increased to 6.27V after 3.5hrs and is currently sitting at 5.94V

OMEGA reached 2111C [when TGHT initially hit 580A] and increased to 2154C after 3.5 hrs and is currently sitting at 2094C

TGHT voltage reached 10.4V [when TGHT initially hit 580A] and increased to 10.6V after 3.5hrs and is currently sitting at 10.3V

 Friday, November 21, 2014, 17:59

EVAP2 sat at max setting: TGHT = 580A and TBHT = 230A for ~4hours

Initiating auto-cool TGHT 2A/min, TBHT 1A/min

 Monday, November 24, 2014, 14:28

Vented and opened this morning.

No notable changes on target container.

[See attachments for more detailed information of results]

 Wednesday, January 14, 2015, 13:46: Roughing

Wednesday, January 14, 2015, 14:57: Starting turbo

Monday, January 19, 2015, 13

Water opened up to one circuit at at time. No response on the vacuum could be seen.

IGP1 at 1.7E-7 T

IGP2 at 3E-8 T

Tuesday, January 20, 2015, 13:11: Stopped turbo and roughing pump.

Wednesday, January 21, 2015, 15:46: Venting

Rick and Anders found CG1A to be reading too high a value. A borrowed gauge from the vacuum group confirmed this. A new gauge will be installed

Thursday, January 22, 2015, 14:06: Roughing

Thursday, January 22, 2015, 14:18: Venting

The reading is consistent between CG1A and CG1B, which simplifies pump down.

 See previous e-log entry for details

Monday, February 02, 2015, 16:28

Container is coated with TaC.  No Ta foil wrapped around. 

Chamber is being pumped down.

TGHT/TBHT will be ramped up to 580A/230A at 0.2A/min.

John Wong wrote:

Monday, February 02, 2015, 16:28 Container is coated with TaC.  No Ta foil wrapped around.  Chamber is being pumped down. TGHT/TBHT will be ramped up to 580A/230A at 0.2A/min.

 Tuesday, February 03, 2015, 10:28

HS water valves opened; no leaks detected.

IGP1 = 5.9e-7 Torr

 Wednesday, February 04, 2015, 11:10

attempted to initiate manual ramp up of TGHT and TBHT yesterday, but not responding to EPICS

currently sitting under vacuum, waiting on fix...

 Wednesday, February 04, 2015, 14:16

controls fixed.

initiated auto-ramp.

 Thursday, February 05, 2015, 08:56

IGP1 = 4.1e-7 Torr

TGHT = 290A

TBHT = 225A

Increasing auto-ramp to 1.0A/min

 Thursday, February 05, 2015, 13:49

IGP1 = 1.4e-6 Torr

TGHT = 569A

TBHT = 232A

Increasing auto-ramp to 2.0A/min

Laura Lambert wrote:

John Wong wrote: Monday, February 02, 2015, 16:28 Container is coated with TaC.  No Ta foil wrapped around.  Chamber is being pumped down. TGHT/TBHT will be ramped up to 580A/230A at 0.2A/min.      Tuesday, February 03, 2015, 10:28 HS water valves opened; no leaks detected. IGP1 = 5.9e-7 Torr  Wednesday, February 04, 2015, 11:10 attempted to initiate manual ramp up of TGHT and TBHT yesterday, but not responding to EPICS currently sitting under vacuum, waiting on fix...  Wednesday, February 04, 2015, 14:16 controls fixed. initiated auto-ramp.  Thursday, February 05, 2015, 08:56 IGP1 = 4.1e-7 Torr TGHT = 290A TBHT = 225A Increasing auto-ramp to 1.0A/min  Thursday, February 05, 2015, 13:49 IGP1 = 1.4e-6 Torr TGHT = 569A TBHT = 232A Increasing auto-ramp to 2.0A/min

 Thursday, February 05, 2015, 18:02

Auto-cooling TGHT to 400A at 1A/min.  Need to take voltage reading tomorrow. 

John Wong wrote:

Laura Lambert wrote: John Wong wrote: Monday, February 02, 2015, 16:28 Container is coated with TaC.  No Ta foil wrapped around.  Chamber is being pumped down. TGHT/TBHT will be ramped up to 580A/230A at 0.2A/min.      Tuesday, February 03, 2015, 10:28 HS water valves opened; no leaks detected. IGP1 = 5.9e-7 Torr  Wednesday, February 04, 2015, 11:10 attempted to initiate manual ramp up of TGHT and TBHT yesterday, but not responding to EPICS currently sitting under vacuum, waiting on fix...  Wednesday, February 04, 2015, 14:16 controls fixed. initiated auto-ramp.  Thursday, February 05, 2015, 08:56 IGP1 = 4.1e-7 Torr TGHT = 290A TBHT = 225A Increasing auto-ramp to 1.0A/min  Thursday, February 05, 2015, 13:49 IGP1 = 1.4e-6 Torr TGHT = 569A TBHT = 232A Increasing auto-ramp to 2.0A/min    Thursday, February 05, 2015, 18:02 Auto-cooling TGHT to 400A at 1A/min.  Need to take voltage reading tomorrow.

 Tuesday, February 10, 2015, 09:35

Vented and opened this morning.

Container fully sintered.

 Tuesday, February 10, 2015, 14:00

Container loaded into EVAP2 at noon.

no heat shields.

Chamber currently being pumped down.

TGHT/ TBHT will be ramped up to 580A/ 230A, tapped up manually.

 Tuesday, February 10, 2015, 14:39

HS water valves opened, no leaks detected.

Tapping up manually / recording data in excel

 Wednesday, February 11, 2015, 11:24

Reached max set points yesterday early evening.

Tapped down manually this a.m.

Will vent and open this afternoon.

 Wednesday, February 11, 2015, 15:54

Took out this afternoon.

container looks good.

graphite insert removed/ inspected - not much change, slightly lighter in colour.

[see attachments for graphs/ table]

 Wednesday, February 11, 2015, 16:10

Container loaded into EVAP2.

3xTa heat shields.

Chamber currently being pumped down.

TGHT/ TBHT will be ramped up to 580A/ 230A or 1800C tapped up manually.

 Thursday, February 12, 2015, 09:39

HS water valves opened, no leaks detected.
Tapping up manually.

 Thursday, February 12, 2015, 12:07

OMEGA reached 1805C; TGHT = 415A, TBHT = 205A

Will continue to tap up manually to 2000C

 Thursday, February 12, 2015, 15:19

Reached TGHT = 500A, TBHT = 230A, OMEGA = 2035C.

Sat for ~2hrs.

Tapping up a further 25A on the TGHT.

 Thursday, February 12, 2015, 16:05

Tapped up manually to:

OMEGA = 2250C

DV = 5.65V

TGHT = 580A

TBHT = 230A

Friday, February 13, 2015, 10:05

Reached max setpoint last night.

Voltage starting to increase at contant TGHT @ 580A.  Lower TGHT to 525A, temp at 2150C (time 6:30pm) 

Initiating manual cool down.

Friday, February 13, 2015, 15:31

vented and opened up this afternoon.

everything looked good, container not broken! graphite insert looked good! the container was slightly bent, but nothing of significance.

however, the graphite insert bonded to the container so it was not taken out in one piece...

 Thursday, February 19, 2015, 15:19

Target container coated with TaC, loaded in EVAP2.

No Ta heat shields.

Will pump down over the weekend.

 Monday, February 23, 2015, 10:22

IGP1  = 1.75e-7 Torr

TGHT will be ramped up to 580A at 0.2A/min

TBHT will be ramped up to 230A at 0.2A/min

evap2 power supply not responding to epics controls...waiting on fix

 Wednesday, February 25, 2015, 16:05

controls now fixed.

danceioc1 involving evap ioc will be updated tomorrow by controls.

once ioc update complete will ramp up.

 Friday, February 27, 2015, 09:34

ioc update complete yesterday afternoon.

IGP1 = 1.1e-7

initiating ramp up...

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

 Monday, March 02, 2015, 09:01

IGP1 = 2.5e-7 Torr

TGHT = 578A

TBHT = 232A

OMEGA = 1750C

Increasing to 1800C

 Monday, March 02, 2015, 10:42

Reached 1800C at 10:30

TGHT = 603A

TBHT = 232A

IGP1 = 2.8e-7 Torr

 Monday, March 02, 2015, 14:26

Sat at max set point for 4hrs.

IGP1 = 2.7e-7 Torr.

Initiating auto-cool, TGHT @ 2A/min, TBHT @ 1A/min.

 Tuesday, March 03, 2015, 09:17

vented and opened this a.m.

target container looks good, TaC coating fully sintered.

 Thursday, April 09, 2015, 09:33

Target container is coated with TaC and wrapped with 3-Ta heat shields, not incl center block.

TGHT and TBHT will be ramped up to 820A and 230A, respectively.

Chamber pumped down overnight.

IGP1 = 5.2e-7 Torr.

HS cooling water valves opened; no leaks detected.

TGHT max voltage = 18V, TBHT max voltage = 5V

Stepping TGHT and TBHT up to 35A...

 Thursday, April 09, 2015, 10:07

Waited ~20min, vacuum stable.

IGP1 = 5.3e-7 Torr.

Good vac = 3e-5 Torr. Bad vac = 4e-5 Torr.

Auto-ramp initiated at 0.2A/min.

 Monday, April 13, 2015, 09:06

Reached max setpoints sunday morning [see attached photo for striptool].

Internal temperature measured with OMEGA  = 1965C

IGP1 = 4.4e-7 Torr,

Initiating auto cool for TGHT and TBHT at 2.0A/min and 1.0A/min respectively.

 Tuesday, April 14, 2015, 14:12

Vented in air and opened up this morning.

Fully sintered.

 Tuesday, May 19, 2015, 13:33

Target container is coated with TaC.  No Ta-heat shields are used.

TGHT will be ramped up to 580A at 0.2A/min.

TBHT will be ramped up to 230A at 0.1A/min.

Chamber is currently being pumped down

 Tuesday, May 19, 2015, 15:04

Opened up HS water, no leaks detected.

Stepped up to 35A.

Waited ~35min, vacuum stable.

IGP1 = 1.7e-6 Torr.

Initiating auto-ramp.

 Wednesday, May 20, 2015, 11:43

IGP1 = 3e-7 Torr.

TGHT = 282A, 3.8V

TBHT = 156A, 2.2V

Increasing ramping rate to 1.0A/min and 0.5A/min for the TGHT and TBHT respectively.

 Thursday, May 21, 2015, 10:42

IGP1 = 2.9e-7

Direct voltage = 5.48V

OMEGA = 1703C.

Initiating auto-cool at 2.0A/min  and 1.0A/min for the TGHT and TBHT.

 Friday, May 22, 2015, 11:41

Vented in air and opened up this morning.

TaC coating fully sintered, looks good! 

 Friday, May 22, 2015, 11:43

A target boat was sprayed with TaC coating and let dry yesterday.

The target boat is wrapped with 3-layers of Ta-heat shield.

The boat was installed in EVAP2, chamber is currently being pumped down.

 Friday, May 22, 2015, 14:22

HS water valves opened, no leaks detected.

IGP1 = 2.4e-6 Torr.

Tapping up manually...

 Friday, May 22, 2015, 14:33

Tapped up to 20A.

Vacuum jumped up to 7e-6 Torr.

Backed off to 5A before vacuum started to drop again.

IGP1 = 5e-6 Torr.

Tapping up manually again...just more slowly...

 Friday, May 22, 2015, 15:31

Tapped up to 12A, unable to tap up very fast due to volatile content in coating.

IGP1 = 3.6e-6 Torr.

Initiating auto-ramp at 0.1A/min with a max current of 580A.

 Monday, May 25, 2015, 09:03

IGP1 = 3e-7 Torr.

TGHT = 397.5A, 6.43V

Increasing ramping rate to 1.0A/min.

Laura Lambert wrote:

Friday, May 22, 2015, 11:43 A target boat was sprayed with TaC coating and let dry yesterday. The target boat is wrapped with 3-layers of Ta-heat shield. The boat was installed in EVAP2, chamber is currently being pumped down.  Friday, May 22, 2015, 14:22 HS water valves opened, no leaks detected. IGP1 = 2.4e-6 Torr. Tapping up manually...  Friday, May 22, 2015, 14:33 Tapped up to 20A. Vacuum jumped up to 7e-6 Torr. Backed off to 5A before vacuum started to drop again. IGP1 = 5e-6 Torr. Tapping up manually again...just more slowly...  Friday, May 22, 2015, 15:31 Tapped up to 12A, unable to tap up very fast due to volatile content in coating. IGP1 = 3.6e-6 Torr. Initiating auto-ramp at 0.1A/min with a max current of 580A.  Monday, May 25, 2015, 09:03 IGP1 = 3e-7 Torr. TGHT = 397.5A, 6.43V Increasing ramping rate to 1.0A/min.

 Monday, May 25, 2015, 17:06

TGHT at been at 580A for over 4 hours.  Cooling down in process at 1A/min. 

John Wong wrote:

Laura Lambert wrote:  Friday, May 22, 2015, 11:43 A target boat was sprayed with TaC coating and let dry yesterday. The target boat is wrapped with 3-layers of Ta-heat shield. The boat was installed in EVAP2, chamber is currently being pumped down.  Friday, May 22, 2015, 14:22 HS water valves opened, no leaks detected. IGP1 = 2.4e-6 Torr. Tapping up manually...  Friday, May 22, 2015, 14:33 Tapped up to 20A. Vacuum jumped up to 7e-6 Torr. Backed off to 5A before vacuum started to drop again. IGP1 = 5e-6 Torr. Tapping up manually again...just more slowly...  Friday, May 22, 2015, 15:31 Tapped up to 12A, unable to tap up very fast due to volatile content in coating. IGP1 = 3.6e-6 Torr. Initiating auto-ramp at 0.1A/min with a max current of 580A.  Monday, May 25, 2015, 09:03 IGP1 = 3e-7 Torr. TGHT = 397.5A, 6.43V Increasing ramping rate to 1.0A/min.    Monday, May 25, 2015, 17:06 TGHT at been at 580A for over 4 hours.  Cooling down in process at 1A/min.

 Vented in air and opened up this morning.

Target boat looks good! fully sintered! 

 Thursday, June 04, 2015, 9:07

Container was sprayed with TaC and let dry.

Container has 3x Ta heat shields including center block.

Container was loaded into EVAP2 yesterday and pumped down overnight.

HS water valves were opened up this morning, no leaks detected.

IGP1 = 4.6e-7 Torr.

Tapped up manually to 40A.

Waited ~25min, Vacuum stable.

IGP1 = 5.0e-7 Torr.

Initiating auto-ramp.

TGHT will be ramped to reach 2000C

 Friday, June 05, 2015, 10:01

IGP1 = 4.5e-7 Torr.

TGHT = 313A, 4.47V

OMEGA = 1444C

Increasing ramping rate to 1.0A/min

 Friday, June 05, 2015, 11:31

IGP1 = 1.2e-6 Torr.

Increasing ramping rate to 2.0A/min

Laura Lambert wrote:

Thursday, June 04, 2015, 9:07 Container was sprayed with TaC and let dry. Container has 3x Ta heat shields including center block. Container was loaded into EVAP2 yesterday and pumped down overnight. HS water valves were opened up this morning, no leaks detected. IGP1 = 4.6e-7 Torr. Tapped up manually to 40A. Waited ~25min, Vacuum stable. IGP1 = 5.0e-7 Torr. Initiating auto-ramp. TGHT will be ramped to reach 2000C  Friday, June 05, 2015, 10:01 IGP1 = 4.5e-7 Torr. TGHT = 313A, 4.47V OMEGA = 1444C Increasing ramping rate to 1.0A/min  Friday, June 05, 2015, 11:31 IGP1 = 1.2e-6 Torr. Increasing ramping rate to 2.0A/min

 Friday, June 05, 2015, 12:01

TGHT reached to 465A/7.56V, temp is stable at 2000C. Current vac at 1.2e-6 Torr and coming down

Cooling down process can be initiated after 4 hours. 

John Wong wrote:

Laura Lambert wrote:  Thursday, June 04, 2015, 9:07 Container was sprayed with TaC and let dry. Container has 3x Ta heat shields including center block. Container was loaded into EVAP2 yesterday and pumped down overnight. HS water valves were opened up this morning, no leaks detected. IGP1 = 4.6e-7 Torr. Tapped up manually to 40A. Waited ~25min, Vacuum stable. IGP1 = 5.0e-7 Torr. Initiating auto-ramp. TGHT will be ramped to reach 2000C  Friday, June 05, 2015, 10:01 IGP1 = 4.5e-7 Torr. TGHT = 313A, 4.47V OMEGA = 1444C Increasing ramping rate to 1.0A/min  Friday, June 05, 2015, 11:31 IGP1 = 1.2e-6 Torr. Increasing ramping rate to 2.0A/min    Friday, June 05, 2015, 12:01 TGHT reached to 465A/7.56V, temp is stable at 2000C. Current vac at 1.2e-6 Torr and coming down Cooling down process can be initiated after 4 hours.

 Friday, June 05, 2015, 13:21

OMEGA = 1995C

Increasing TGHT to 470A to achieve desired max temperature of 2000C

Friday, June 05, 2015, 15:59

TGHT sat at max desired temperature of 2000C for ~4hrs.

TGHT = 470A, 7.7V

Initiating auto-cool at 1.0A/min.

 Monday, June 08, 2015, 11:31

Vented in air and opened up this morning.

Target container mostly sintered, two tiny patches near both ends not fully sintered.

Will re-install and re-sinter next week as another container with priority needs to be sintered first.

 Tuesday, June 09, 2015, 10:45

See attachements for 'not-fully-sintered' photos