Wednesday, March 01, 2023, 21:46

Ta HP-SIS was coated with TaC and wrapped with Ta heat-shields (3 layers + 1 inner layer around fins)

Desired temperature = 1850 C , TBHT will be set fixed at 230A (max).

Evap 2 will be pumped down over previous night

OMEGA slope= 0.990

Good vacuum = 5.00 e-4 Torr

Bad vacuum = 5.00 e-2 Torr

IGP1= 5.7 e-07 Torr

Start autoramp @1A/min to 500 A on TGHT and 230A TBHT. 

Thursday, March 02, 2023, 10:10

ramping to 600A on TGHT @ 2A/30s, TBHT at 230A, 3.2V

Thursday, March 02, 2023, 11:22

At 11 am reached 1800s C and 1851C @1120 am. 

TGHT = 690 A, 10.5V

TBHT = 230 A, 3.3V

Cool down to start at 3 pm

Monday, March 06, 2023, 21:29

Total number of foils:382 ( including 5 analysis discs on the right side of the container)

Total length packed 17 cm (excluding 5 analysis discs that will be removed)

container has 4 Ta heat shields (one inner only around fins)

No endcaps inserted to facilitate out-gassing

Ta coated spring at  both ends

ramp to 500A @ 1A/min TGHT and to 230A on TBHT

max approx 700A on TGHT and 230A on TBHT (Omega slope set = 0.990)

Then temperature = 1800C

TBHT will be set fixed at 230 A (max).  TBHT heated manually and automatically to max.

Good vac at 5.00 e -4 Torr

Bad vac at 5.00 e-2 Torr

 IGP1= 3e-06 Torr at start of initial ramp.

Tuesday, March 07, 2023, 07:23

IGP1= 1.2e-05 Torr

OMEGA = 1288 C

Tuesday, March 07, 2023, 10:01

Will ramp to 715 A and keep there for 4 hours.  OMEGA readings not reliable beyond this point due to coating on EVAP2 window.

Tuesday, March 07, 2023, 11:10

TGHT = 715A, 11.0V

TBHT = 230A, 3.2V

OMEGA = 1750 C (but not reliable)

Maintaining for 4 hours then will ramp down @ -2A/min TGHT and -1A/min TBHT

Wednesday, March 08, 2023, 07:27

Final IGP1= 1.3e-07 Torr (before shutting down pumps)

Sunday, March 12, 2023, 08:04

Ta HP-SIS was coated with TaC and wrapped with Ta heat-shields (3 layers + 1 inner layer around fins)

Desired temperature = 1850 C , TBHT will be set fixed at 230A (max).

Evap 2 will be pumped down over previous night

OMEGA slope= 0.990

Good vacuum = 5.00 e-4 Torr

Bad vacuum = 5.00 e-2 Torr

IGP1=1.9 e-07 Torr

Start autoramp @2A/min to120 A on TGHT and TBHT.

OMEGA target temp = 1850 C

Sunday, March 12, 2023, 13:08

start autoramp to 500A on TGHT @ 4A/min (2A/30s)

from 320A, 4.5 V on TGHT

IGP1= 6.8e-07 Torr

Sunday, March 12, 2023, 19:09

Starting ramp down @ -2A/min TGHT, and -1A/min TBHT

@687A, 10.7 V TGHT OMEGA = 1850 C

final pressure IGP1= 2.4e-06 Torr

Monday, March 13, 2023, 22:28

Total number of foils:380 ( including 5 analysis discs on the front side of the container)

Total length packed 17 cm (excluding 5 analysis discs that will be removed)

container has 4 Ta heat shields (one inner only around fins)

No endcaps inserted to facilitate out-gassing

Ta coated spring at  both ends

ramp to 500A @ 1A/min TGHT and to 230A on TBHT

max approx 700A on TGHT and 230A on TBHT (Omega slope set = 0.990)

Then temperature = 1800 C.  Will ramp to 1820 C

TBHT will be set fixed at 230 A (max).  TBHT heated manually and automatically to max.

Good vac at 5.00 e -4 Torr

Bad vac at 5.00 e-2 Torr

 IGP1= 2.8e-06 Torr at start of initial ramp.

Tuesday, March 14, 2023, 07:26  

Increased autoramp to 2A/min to 700 A on TGHT while keeping TBHT to 230A, 3.3V

Tuesday, March 14, 2023, 09:53

At 743A, 11.8V TGHT

OMEGA = 1780 C.  (not entirely reliable, will leave at this current for 4 hours)

Tuesday, March 14, 2023, 14:00

Starting rampdown at -2A/min on TGHT and -1A/min TBHT

Final IGP1= 5.5e-06 Torr

OMEGA= 1750C

TBHT= 230A, 3.3V

Tuesday, September 12, 2023, 09:51

The coated container was wrapped in 3 Ta foil heatshield and left in evap2 over night to attain vacuum.

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~700A (adjustable)

Heating autoramp starged at 1A/min on  TGHT  and TBHT to 120A

Then at 2 A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Initial IGP1= 2.7e-06 Torr

Tuesday, September 12, 2023, 7:00

Started autoramp @1A/min to 120A on both TGHT and TBHT

Tuesday, September 12, 2023, 09:53

Heating ramp set to 230A for both TGHT and TBHT.  Rate at 2A/min for both heaters.

Tuesday, September 12, 2023, 11:21

Continued ramp on TGHT at 2A/min to 335A and now setting to 3A/min (1.5A/30s)

Tuesday, September 12, 2023, 11:47

Continue ramping @3A/min on TGHT

 Tuesday, September 12, 2023, 13:33

Reached 1840 C at TGHT =677A and 10.5V

Will keep for 4 hours

Thursday, December 14, 2023, 09:53

Target left pumping down in Evap2 overnight. 

Initial weight including protective jig = 1474.3 g

Total number of target foils:388 

 10 analysis discs: 5x 220727-2 labelled as A and 5x 231123-2 labelled as B on the right side (front) of container.  Order of discs ABABABABAB.

Total length packed 15.5 cm

container has 3 Ta heat shields including the inner made of three pieces as to cover the center block.

No endcaps inserted to facilitate out-gassing

Ta coated spring at  both ends

ramp to 500A @ 1A/min TGHT and to 230A on TBHT

max approx 700A on TGHT and 230A on TBHT (Omega slope set = 0.990)

Then temperature = 1800C

TBHT will be set fixed at 230 A (max).  TBHT heated manually and automatically to max.

Good vac at 5.00 e -4 Torr

Bad vac at 5.00 e-2 Torr

 IGP1= 9.3e-07 Torr at start of initial ramp.

Thursday, December 14, 2023, 09:56

Started initial ramp up 1A/min on both heaters

Thursday, December 14, 2023, 11:03

Pressure dropping.  Will increase ramp speed to 2A/min on both heaters (1A/30s)

Thursday, December 14, 2023, 11:17

pressure dropping.  Increase ramp to 4A/min (2A/30s)

Will stop and ramping for temperature measurements

Thursday, December 14, 2023, 13:28

Increased ramp to 5A/min (2.5A/30s)

 Will heat to 703A on TGHT and leave for 4 hours

 Monday, April 29, 2024, 19:50

Started coating with coating stand.

The coated container was wrapped in 3 Ta foil heatshields.

Vacuum IGP1 initial =9.1 e-07 Torr

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~700A (adjustable)

Heating autoramp starged at 2A/min(1A/30s) on  TGHT  100A

Then at 2A/min  to =700 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Monday, April 29, 2024, 20:25

Reached 1810 @700A

Will leave until 1230am

Wednesday, May 01, 2024, 11:53

The coated container was wrapped in 4 Ta foil heatshields.

Vacuum IGP1 initial =8.1 e-06 Torr

Target temperature on OMEGA= 1850-1900 C

OMEGA slope:= 0.990

Target time at max temperature = 4 hours

Final Current TBHT= 230 A

Final TGHT current= ~500A (adjustable)

Heating autoramp starged at 3A/min(1A/30s) on  TGHT  100A

Then at 2A/min  to =400 A TGHT and 230A TBHT

Good vacuum = 5.0 e-04 Torr

Bad vacuum = 5.0E-02 Torr

Wednesday, May 01, 2024, 22:19

1830C reached at 670A. 10.0V TGHT

Start cooling after 4 hours. 

 Monday, October 25, 2021, 11:52

Ta IGLIS tube was coated with TaC and wrapped with Ta heat-shields (3 layers)

Desired temperature = 1900 C (expected TGHT ~430 A), TBHT will be set fixed at 230A (max).

Evap 2 will be pumped down over previous night

Good vacuum = 3.00 e-3 Torr

Bad vacuum = 5.00 e-2 Torr

Initial total weight = 439.0 g

Final weight after sintering = 438.8 g

Tuesday, October 26, 2021, 07:18 

IGP1= 9.2 e-07 Torr

Will ramp to 50A at 1A/min on both TGHT and TBHT.

Tuesday, October 26, 2021, 08:37 

IGP1= 3.0 e-05 Torr

TGHT= 50.2 A, 0.6 V

TBHT = 49.4 A, 0.5 V

Will allow pressure to drop further then start further ramp up

Tuesday, October 26, 2021, 14:36

TGHT =  100 A, 1.3 V

TBHT = 99 A, 1.0 V

IGP1 = 3.e-5 Torr

ramp up TGHT to 400 A and TBHT to 230 A at 1.5 A/ min

Tuesday, October 26, 2021, 18:46 

 Will keep at 430A on TGHT and 230A on TBHT for 4 hours.

OMEGA reading = 1653  C is suspicious based on previous coating.  

Tuesday, October 26, 2021, 23:05

TGHT = 430.5 A, 6.9 V

TBHT = 232.09A, 2.8 V

IGP1= 8.8e-06 Torr

Start cooling THGT at -2A/min and TBHT at -1A/min 

 Thursday, May 11, 2017, 11:21

Turns out SiC HP-FEBIAD that has finished conditioning is loaded in the wrong container and it should be a SiC HP-FEBIAD cold transfer line...so rush on new target.

Container coated with TaC using new method: Ends taped off,  with liquid poured in and swirled around entire container, then poured back out - 'flushing technique'

Container is wrapped with 1x heatshield around each side of cooling fins, not incl center block.

Loaded into EVAP2 and currently pumping down.

 Thursday, May 11, 2017, 13:40

IGP1 = 1.85e-6 Torr.

HS water valves opened.

No leaks detected.

Tapped up manually to 35A.

Vacuum stable.

IGP1 = 3.2e-6 Torr

IGP2 = 4.2e-6 Torr

Initiated auto ramp at 0.2A/min and 0.1A/min for the TGHT and TBHT respectively.

Final setpoints for TGHT = 450A and TBHT = 230A, with final desired temp of 1900C

OMEGA slope = 0.98

 Friday, May 12, 2017, 07:57

IGP1 = 4.3e-7 Torr.

IGP2 = 4.4e-7 Torr

TGHT = 233A, 2.8V

TBHT = 130A, 1.6V

Increasing ramping rate to 2.0A/min and 1.0A/min for the TGHT and TBHT respectively.

 Friday, May 12, 2017, 08:54

Comparing direct readouts with epics:

IGP1: direct = 1.9e-6 Torr; epics = 1.3e-6 Torr

IGP2: direct = 1.55e-6 Torr; epics = 1.4e-6 Torr

TGHT: direct = 320A, 4.38V; epics = 321A, 4.19V

TBHT: direct = 181A, 2.40V; epics = 178A, 2.34V

 Friday, May 12, 2017, 10:28

IGP1 = 1.07e-6 Torr

IGP2 = 1.15e-6 Torr

TGHT = 450A, 6.37V

TBHT = 230A, 3.21V

OMEGA = 1197C

Increasing max setpoint of TGHT = 700A

 Friday, May 12, 2017, 13:06

IGP1 = 2.4e-6 Torr

IGP2 = 2.5e-6 Torr

TGHT = 696A, 11.21V

TBHT = 233A, 3.26V

OMEGA = 1758C

Increasing max setpoint of TGHT = 800A

 Friday, May 12, 2017, 13:32

TGHT maxed out at 715A but continued ramping.

This was noticed when current set of TGHT = 750A but readout = 715A

This is due to max voltage limit = 12.0V and readout =11.58V

Increasing TGHT max setpoint to 14.0V and restarting auto ramp from 714A

 Friday, May 12, 2017, 14:45

Container has reached max setpoint of ~1900C

TGHT setpoint = 775A

TGHT = 769A, 12.54V

TBHT = 233A, 3.28V

IGP1 = 2.94e-6 Torr

IGP2 = 2.99e-6 Torr

OMEGA = 1912C

Will remain at max setpoint over weekend.

See attached photos of temperature measurements using MIKRON while TGHT current set point = 770A.

Photos are not super accurate but good as a rough idea.

Ex. for left side the point in the camera is actually pointed slightly closer to the end of the container but in the photo it looks more centered.

Saturday, May 13, 2017, 10:52 by Anders

Ramping down heaters. Temp 1912 C. Vacuum IGP1 = 5.4e-7 Torr

Monday, May 15, 2017, 13:10

Vented in air and taken out this a.m.

Target container looks good. 

Fully sintered coating.

 Tuesday, May 16, 2017, 10:56

Target container contains 460 discs of SiC 

Target packed length = 17cm. 

Mass of SiC(green)  = 55.5152g

Consists of 4 packs of 5 and 440 singles.

Container is wrapped with 1x heatshield around each side of cooling fins; no end caps are inserted yet - coated spring inserted both sides to hold discs in place.

Sintering temp = 1800C

Chamber is currently being pumped down. 

 Tuesday, May 16, 2017, 15:27

HS water valves turned on, no leaks detected.

Tapped up manually to 30A

Waited ~30min , vacuum stable.

IGP1 = 8.25e-6 Torr

Initiating auto-ramp at 0.2A/min and 0.1A/min for the TGHT and TBHT respectively.

TGHT max = 400A.  TBHT max at 230A. 

Slope on OMEGA = 1.09 [see elog i.d. # 370 for reasoning behind OMEGA slope choice]

 Friday, May 19, 2017, 10:13

TGHT = 250A, 3.11V     DR = 248A, 3.3V

TBHT = 137A, 1.68V     DR = 140A, 1.73V

OMEGA = 1100C

IGP1= 6.9e-6 Torr     DR = 1e-5mbar

IGP2 = 5.9e-6 Torr     DR = 6.45e-6 Torr

Vacuum stable.

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

 Friday, May 19, 2017, 10:33

Change in plan and switching ramping rate to 0.5A/min and 0.2A/min for the TBHT and TGHT respectively.

 Friday, May 19, 2017, 14:49

TGHT = 400A, 5.46

TBHT = 200A, 2.66

IGP1 = 2.7e-5 Torr

IGP2 = 2.2e-5 Torr

OMEGA = 1200C

Increasing max setpoint for TGHT to 550A

Decreasing ramping rate to 0.2A/min and 0.1A/min for over the weekend.

 Tuesday, May 23, 2017, 09:23

TGHT = 550A, 8.37

TBHT = 230A, 3.14

IGP1 = 1.6e-7 Torr

IGP2 = 1.6e-7 Torr

OMEGA = 1570C

Increasing max setpoint for TGHT to 600A at rate to 0.5A/min

 Tuesday, May 23, 2017, 11:45

TGHT = 600A, 9.36

IGP1 = 3.5e-7 Torr

IGP2 = 3.8e-7 Torr

OMEGA = 1675C

Increasing max setpoint for TGHT to 625A at rate to 0.5A/min

 Tuesday, May 23, 2017, 13:03

TGHT = 625A, 9.80V

IGP1 = 5.2e-7 Torr

IGP2 = 5.7e-7 Torr

OMEGA = 1715C

OMEGA no longer valid around 640A as temperature drops instantly after tapping up.

Could be due to target movement at high temperature.

No obvious window coating.

Tapped up manually to 660A, 10.49V.

Will remain at max setpoint overnight.

 Wednesday, May 24, 2017, 11:13

TGHT = 660A, 10.74V

TGHT power supply = 662A, 11.00V

TBHT = 230A, 3.16V

TBHT power supply = 232A, 3.25V

IGP1 = 4.2e-7 Torr

IGP1 direct readout = 5.9e-7 mbar

IGP2 = 4.6e-8 Torr

IGP2 direct readout = 5e-7 Torr

Evap2 reached max setpoint yesterday afternoon.

Window has thiny coating - see attached photo.

OMEGA = 1800

MIKRON = ~1800

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

 Wednesday, May 24, 2017, 11:36

Change of plan.

TGHT = 620A, TBHT = 210A

Ramping back-up to max setpoints and will remain at those points until vacuum starts to decrease more.

 Friday, May 26, 2017, 15:24

IGP1 = 2.1e-7 Torr

IGP2 = 2.2e-7 Torr

TGHT = 660A, 10.72V

TBHT = 230A, 3.21V

All windows coated.

Remained at max setpoints for ~3.5days.

Conditioning process complete.

Initiating auto-cool at 2A/min and 1A/min for the TGHT and TBHT respectively.

 Tuesday, May 30, 2017, 14:41

Target vented in air and removed from evap2

Looks good!

Endcaps inserted and expanded.

See photos attached.

Wednesday, May 16, 2018, 09:56

Container coated with TaC using 'flushing technique' and let dry over weekend.

Cleaned ionizer tube with acetone, no coating inside ionizer tube.

Wrapped with 3 x Ta heat shields, not incl center block

OMEGA slope = 0.98

*NOTE: realized after pumping down, filament on IGP2 is burnt out and needs replacing, will order a new one and use IGP1 for this process

Thursday, May 17, 2018, 13:15 

HS water valves remained open since the last time evap2 was used, no leak check done.

Tapped up manually to 50A.

Waited ~1hr

Vacuum stable.

IGP1 = 1e-6 Torr

Initiating auto ramp for TGHT @ 0.2A/min to a max setpoint of 350A

Initiating auto ramp for TBHT @ 0.1A/min to a max setpoint of 230A

Once max setpoints achieved, will tap up manually to final desired temperature of 1900C

Friday, May 18, 2018, 13:00 

Tapped up manually.

TGHT = 495A, 8.84V

TBHT = 230A, 3.26V

MIKRON = 2000C

Filament = 1910C

OMEGA = 1910C

Will remain at max setpoints over weekend.

Tuesday, May 22, 2018, 10:04 

Remained at max setpoints over long wknd.

TGHT = 495A, 8.85V

TBHT = 230A, 3.26V

IGP1 = 2.47e-7 Torr

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

Wednesday, May 23, 2018, 10:08 

Vented in air this morning.

Container looks good!

Transferred into glove box.

 Sunday, July 22, 2012, 20:30

The NiO target materials were loaded into the container today.  

Total discs = 500, (10 discs/pack) 

length (after loaded) = 9.0cm 

Target container is wrapped with Ta-heat shields, and will be removed after the sintering process. 

One regular end cap is inserted (with Ni-foil inserted as a divider).  The caps, however, are very loose (tried 2 caps and still loose).  Hopefully the thermo diffusion bonding will seal the cap... 

The other end is inserted with a D-cap for out-gassing proposes, and will be replaced with the regular end-cap after the process. 

(see attachment#1)

Sunday, July 22, 2012, 20:48 

The camber has been pumped down and currently IG1=1.3e-6 Torr.

The HS cooling water was turned on and no leaks were detected.  

TGHT and TBHT were stepped up to 50A. 

Auto-ramping is initiated at 0.2A/min for TGHT max = 250A, TBHT max = 230A. 

 Thursday, July 26, 2012, 23:31

TGHT and TBHT have reached to 250A (local @ 242A/2.88V) and 230A, respectively, and have stayed for ~4hrs (see attachment#2)  

Currently, IGP1 = 4.9e-7 Torr, IGP2 = 3.5e-7 Torr, CG1B = 13mTorr. 

Initiating auto-cool down at 2A/min.  

 Monday, July 30, 2012, 15:11

The chamber was vented and the target was removed.

There was significant condensation oily fluid coated Cu-heatshield lid and around the ionizer opening.

Overall, the target looks very good.  The NiO target material was nicely sintered.  No shrinkage or loose particles were observed (see attachment #3).

The endcap, however, was not properly fitted and it just fell off, (see attachment #4). 

Both ends of the target are currently opened; the expension tool for the endcap is in order and hopefully this will solve the problem.

The target is being stored in the fumehood

Tuesday, August 14, 2012, 15:44

This SiC target was prepared in May 2011 with the Evaporator#1.  The target will not used for online. 

Two endcaps were inserted with the new expansion tool.  The target will be heated up to the normal operating condition (TGHT =580A, TBHT = 230A). 

The chamber is currently being pumped down. 

 Tuesday, August 14, 2012, 16:21

Earlier, the Cu-heat shield was removed from the evaporator to replace the insulators, so all the seals were placed with new ones.  However,

there seems to be some leaks after the HS cooling water is turned on.  (see attachment#1).

The TP off, and the chamber is vented for investigation.

 Tuesday, August 14, 2012, 17:25

All the 3 seals for the Cu-heat shield were replaced.  The chamber has been pumped down and the HS water valve is open.  No leaks are detected.

Tuesday, August 14, 2012, 17:29

Initiated auto-ramping at 2A/min for both TGHT and TBHT.

Parameter constraints: good vac @ 2.0e-5 Torr, bad vac @ 3.0e-5 Torr.

Currently, IG1 @ 6.5e-6 Torr.

 Wednesday, August 15, 2012, 09:52

TGHT and TBHT have reached to 520A and 230A, respectively, and have stayed at the currents for about 10 hours. (see attachment #2) 

IG is currently at 7.7e-7 Torr.  

Initiating auto-cool down at 2A/min. 

 Thursday, August 16, 2012, 11:23

Chamber is vented.

Wednesday, March 06, 2013

The Cool Transfer Line (CTL) test target is installed for thermal tests. Drawing number is ITD0431 REV A.

Thermocouple channels are as follows:

T1: Cu block on CTL
T2: Heat Shield above CTL
T3: Heat Shield cooling water Supply
T4: Heat Shield cooling water Return

Cooling water is in Evap2 supplied to the cooling line that goes directly to the area on the Heat Shield above the CTL.

Test results attached.
 

Anders Mjos wrote:

Wednesday, March 06, 2013 The Cool Transfer Line (CTL) test target is installed for thermal tests. Drawing number is ITD0431 REV A. Thermocouple channels are as follows: T1: Cu block on CTL T2: Heat Shield above CTL T3: Heat Shield cooling water Supply T4: Heat Shield cooling water Return Cooling water is in Evap2 supplied to the cooling line that goes directly to the area on the Heat Shield above the CTL.

 Wednesday, March 06, 2013, 17:23

The target has been pumping down to 5.3 e-7 Torr.  On the RGA mass scan, mainly H2O (mass 18 + constituents) was detected at ~2.7pA (see attachment #1).

The target will be heated up: TGHT = 850A (rate @ 1A/min); TBHT = 300A (rate @ 1A/min).

 Thursday, March 07, 2013, 11:51

TGHT and TBHT reached to 850A (local, 845A\13.80V) and 300A, respectively.  The out gassing of CO (mass 28) reached to ~5pA at the max currents.  (see attachment #2) 

 TBHT will be ramped down to 0A to compare the temperatures.  

 Thursday, March 07, 2013, 15:55

TBHT at 0A.  See attachment#3 for the temperatures and RGA data before further ramping down the TGHT.

Monday, March 11, 2013

The CTL test target was installed again for a second thermal test. CTL block fastened to HS with 1 in lbs. A small piece of Ta-foil of 0.001" thickness was used between the CTL Cu-block and the Ta transfer line to reduce the heat transfer..

Thermocouples were re-attached to CTL and Heat Shield (see above for channels #s).

See attached graph (PDF) for details.

Anders Mjos wrote:

Anders Mjos wrote: Wednesday, March 06, 2013 The Cool Transfer Line (CTL) test target is installed for thermal tests. Drawing number is ITD0431 REV A. Thermocouple channels are as follows: T1: Cu block on CTL T2: Heat Shield above CTL T3: Heat Shield cooling water Supply T4: Heat Shield cooling water Return Cooling water is in Evap2 supplied to the cooling line that goes directly to the area on the Heat Shield above the CTL.   Monday, March 11, 2013 The CTL test target was installed again for a second thermal test. CTL block fastened to HS with 1 in lbs. A small piece of Ta-foil of 0.001" thickness was used between the CTL Cu-block and the Ta transfer line to reduce the heat transfer.. Thermocouples were re-attached to CTL and Heat Shield (see above for channels #s).

 Monday, March 11, 2013, 15:55

Chamber was pumped down to 2 e-7 Torr.  HS water valve opened and no leaks were detected.  

TGHT and TBHT are ramping up to 850A and 300A at 2A/min, respectively.  

RGA is running... 

Tuesday, March 12, 2013, 10:44  

TGHT/TBHT reached to max currents. 

See attachment #1 for temperature and RGA measurements. 

Cooling down in process... 5A/min. 

Wednesday, March 13, 2013 

Thermocouple channels (see attached PDF for photos)
T1 - Left target leg at tube
T2 - Between cooling fins close to tube, left side
T3 - Supply water HS
T4 - Return water HS

Friday, March 22, 2013

Test not conducted. Target removed.

Thursday, March 12, 2013 

The CTL was removed and target heated to 580A / 300A

T1: Left target leg close to tube
T2: Heat Shield above CTL
T3: Heat Shield cooling water Supply
T4: Heat Shield cooling water Return

Thursday, March 13, 2013  

The target was cooled down 

Results attached as PDF and Excel