Sunday, August 30, 2020, 06:47

A short tantalum tube was coated with TaC and wrapped with 3 layers of Ta,

a Ta cap was inserted to the end of the tube to be able to measure the temperature during heating

Desired temperature= 1900 C,

Omega Slope set = 0.990

Sunday, August 30, 2020, 06:48

IGP1 = 3.9e-7 Torr

Autoramp set to 0.5A/min to 400 A 

Sunday, August 30, 2020, 18:27

IGP1 8.41e-7 Torr

TGHT = 4.2 V, 327.15 A

Omega  = 1367 °C 

Sunday, August 30, 2020, 18:49

IGP1 = 9.6e-7 Torr

TGHT = 4.4 V, 337.1 a

Omega = 1402 °C 

Sunday, August 30, 2020, 19:25

IGP1 = 9.5e-7 Torr

TGHT = 4.6 A, 347.5 A

Omega = 1472 °C 

Autoramp set to 450 A at 0.1A/30s

Sunday, August 30, 2020, 19:59

IGP1 = 8.5e-7 Torr

TGHT = 4.8 V, 360.5 A

Omega = 1510 °C

 Sunday, August 30, 2020, 22:07

IGP1 = 7.2e-7 Torr

TGHT = 5.3 V, 392.6 A

Omega = 1675 °C 

 Sunday, August 30, 2020, 22:16

IGP1 = 7.1e-7 Torr

TGHT = 5.5 V, 403.2 A

Omega = 1678 °C

Autoramp set to 450 at 0.1A/min

 Sunday, August 30, 2020, 22:26

IGP1 = 6.9e-7 Torr

TGHT = 5.5 V, 399.15 A

Omega = 1689 °C

Monday, August 31, 2020, 08:08

IGP1 = 4.4e-7 Torr

TGHT = 6.4 V, 453.4

Omega =  1852 °C

Monday, August 31, 2020, 08:12 

Autorap set to 0 A at -5 A/min

Saturday, September 05, 2020, 12:56

A Ta tube was wrapped with 3 tantalum foils,

a tantalum cap was inserted in both sides of the Ta tube, the caps weren't sealed.

The tube was set in the EVAP2 

IGP1 = 3.6e-7 Torr 

Saturday, September 05, 2020, 12:57

Autoram set to 10A/30 s to 200 A

 Saturday, September 05, 2020, 13:11

TGHT = 2.7 V, 198.9 A

IGP1 =3e-6 Torr

Autoramp set to to 300 A at 5A/30s 

 Saturday, September 05, 2020, 14:45

IGP1 = 5.1e-7 torr

TGHT = 4.5 V, 303 A

Oemga = 1259 C, 

AP = 1233.5 C

Autoramp set to 450A at 5 A/30s 

 Saturday, September 05, 2020, 15:05

TGHT = 7.3 V, 457.7 A

IGP1 = 2.8e-6 Torr

Omega = 1722 °C

AP = 1572.2 °C

Saturday, September 05, 2020, 15:16 

TGHT = 9.2 V, 552.5 A

IGP1 = 7.5e-6 Torr

Omega = 2016 °C 

AP= 1735.9 °C

Saturday, September 05, 2020, 21:33 

IGP1 = 1.1e-6 Torr

TGHT = 11.2 V, 651.9 A

Omega = 2300 °C

 FEBIAD installed. Anode PS installed. ANODE connected!.

Leak check

Thursday, September 10, 2020, 07:46: Vacuum @ 6.30e-07T

Thursday, September 10, 2020, 07:47: HS Waterline open. Stable vacuum.

Thursday, September 10, 2020, 07:51: Auto-ramp TGHT / TBHT to 400 / 200 A @ 2 A per min. 

FM

Thursday, September 10, 2020, 13:28: Pyrometer aligned.  Current reading 1106.7 @ slope=0.9

Thursday, September 10, 2020, 13:46: Auto-ramp TGHT / TBHT to 580/ 250A @ 2 A per min. 

Thursday, September 10, 2020, 13:47: Recording pyrometer data 

Thursday, September 10, 2020, 15:33: Auto-ramp finished. Temperature=1568.0 @slope=0.9

Thursday, September 10, 2020, 15:35: Voltage power supply limited to 150 mA.

Thursday, September 10, 2020, 15:36: Voltage power supply is set to output. Nothing strange on the other PS.

Thursday, September 10, 2020, 15:42: Slowly increased the voltage to 150 V but nothing read. two times during the voltage sweep the current on the Ps showed 1mA. Nothing strangeon the vacumm or the other power supply voltages

Thursday, September 10, 2020, 15:45: Auto-rampup TBHT to 290 @ 2A/min 

Thursday, September 10, 2020, 16:08: Voltage sweep  

Thursday, September 10, 2020, 17:24: Auto-rampup to 300 @ 2A/min

Friday, September 11, 2020, 11:05: Auto-ramping to 290 @ -2A/min 

Friday, September 11, 2020, 13:22: auto-ramping to 305 @ 2A/min 

Friday, September 11, 2020, 14:10: The power supply is not reading current anymore. At 305 A I couldn't get any reading. I lowered the current to 290 A and the PS displays 0 mA even at 500 V, whereas before it showed 13 mA.

Vacuum looks normal not any sort of spike.

I will open the system to inspect the interior.

Friday, September 11, 2020, 14:15: Auto-cooling to 0 A TGHT/TBHT @-2A/min 

Saturday, September 12, 2020, 10:52: Venting 

Saturday, September 12, 2020, 14:00: Confirmed anode de-attached. I will spot welded again. 

Saturday, September 12, 2020, 18:29: After many failures I aborted the spot welding. The anode ended up looking pretty bad. 

 Sunday, September 13, 2020, 19:06: Opened waterlines. Vacuum still decreasing.

Monday, September 14, 2020, 09:12: Vacuum @  8.15e-7 T. and decreasing. I will start the ramping now.

Monday, September 14, 2020, 09:28: Auto-ramping to 400/200 A @ 4/min (1 A/15 s) .

No reading on the 2-color pyrometer channel. 1-color channels indicate around 1000C

 Monday, September 14, 2020, 12:49: Recording temperature and vacuum. Auto-ramp TBHT to 210 @ 4A/min.

 Monday, September 14, 2020, 12:57: Emissivity slope sweep. Only "under" is being shown

Monday, September 14, 2020, 12:58:  Auto-ramp TBHT to 220 @ 4A/min. 

Monday, September 14, 2020, 13:05: Emissivity slope sweep. Only "under" is being shown

Monday, September 14, 2020, 13:06: Auto-ramp TBHT to 240 @ 4A/min.  

Monday, September 14, 2020, 13:17: Auto-ramp TBHT to 250 @ 4A/min.   

Monday, September 14, 2020, 13:22: Emissivity slope sweep. Only "under" is being shown 

Monday, September 14, 2020, 13:23: Auto-ramp TBHT to 260 @ 4A/min.    

Monday, September 14, 2020, 13:27 : Emissivity slope sweep. Only "under" is being shown 

Monday, September 14, 2020, 13:27 : Auto-ramp TBHT to 275 @ 4A/min.    

Monday, September 14, 2020, 13:36: Emissivity slope sweep. Only "under" is being shown for the 2-color channel. 1-color channel displays around 1200 C. Maybe there is a different  cutoff for the 2-color channel

Monday, September 14, 2020, 13:38: At 400V the PS reads back 1mA 

Monday, September 14, 2020, 13:39 : Auto-ramp TBHT to 290 @ 4A/min.   

Monday, September 14, 2020, 17:41: Roughing 

Tuesday, September 15, 2020, 07:03: Vacuum stable at 4.65e-7T.

Tuesday, September 15, 2020, 07:03:  Auto-ramp TGHT / TBHT to 400/ 200A @ 4 A per min. 

Tuesday, September 15, 2020, 10:00:  Auto-ramp TGHT  to 500 @ 4 A per min. 

Tuesday, September 15, 2020, 11:13:  Auto-ramp  TBHT to 250@ 4 A per min. 

Tuesday, September 15, 2020, 15:44: There is a short inside the system. I  thought it might be the vanadium wire but increasing the tbht current did not indicate a clear evaporation so I don't think this is the case.

I'll ramp down to 0 at 8A/min to open and inspect. My measurements don't make any sense without both the pyrometer and the anode leakage current reading.

Tuesday, September 15, 2020, 15:49: Auto-cooling TGHT/TBHT to 0A at 8A/min (2A /15 s).

 Tuesday, September 15, 2020, 16:00: Auto-cooling aborted, the system is no longer current limited. The contact causing the issue probably moved while cooling.

***many ramp ups.downs, Temperature measurements, voltage sweeps, inverse temperature estimations. Absolute temperature measurements for when the vanadium wire melted, the pyrometer was already reading 1920, a slightly adjust on the emissivity slope move it to 1911C

Tuesday, September 15, 2020, 18:47: Ramp down TGHT/TBHT to 500/250 A @ -1A/min

Tuesday, September 15, 2020, 18:48: Done for today. 

Wednesday, September 16, 2020, 10:02: Auto-ramp up TGHT/TBHT to 580/285 A @ 2A/min 

Wednesday, September 16, 2020, 12:59: Auto-ramp  up TGHT/TBHT to 600 A @ 2 A/min 

Wednesday, September 16, 2020, 13:45: Auto-ramp up TBHT to 290 A @ 1A/min 

Wednesday, September 16, 2020, 18:45: Auto-ramp down TGHT/TBHT to 400/200 A @ -2A/min 

Thursday, September 17, 2020, 08:46: Auto-ramp up TBHT to 285 A @ 2A/min 

Thursday, September 17, 2020, 12:03: Auto-cooling TGHT/TBHT to 0A @ -4A/min

Thursday, September 17, 2020, 13:49: Turbo off. Roughing pump off 

 Thursday, September 17, 2020, 16:10

An LP-SIS was wrapped with 3 Ta layers, and installed in the EVAP2

Desired temperature= 1900 C, Omega Slope = 0.990

Friday, September 18, 2020, 10:56

IGP1 = 4.4e-7 Torr 

Leak check performed, no leak observed

Friday, September 18, 2020, 11:16

Power supplies on.

Good vac at 3.00e -5 Torr

Bad vac at 5.00e-5 Torr

Autoramp at 0.5A/min to 400A on TGHT and 230A on TBHT

 Friday, September 18, 2020, 11:21

Autoramp paused because, TBHT is not ramping

Ramping manually current to 10 A in 0.5 A steps

Friday, September 18, 2020, 11:38

Restarted autoramp  (Autoramp at 0.5A/min to 400A on TGHT and 230A on TBHT)

Friday, September 18, 2020, 22:50

IGP1 = 2.04e-6 Torr 

TGHT = 5 V, 322.8 A

TBHT = 4 V, 233.1 A

Omega = 1459 °C

Autoramp changed to 0.2 A/min to 450 A

Saturday, September 19, 2020, 10:49

IGP1 = 8e-7 Torr

TGHT = 7.3 V, 449.1 A

TBHT = 4 V, 233.1 A

Omega = 1789 degC

 Saturday, September 19, 2020, 13:25

IGP1 = 6.5 e-7 Torr

TGHT  7.2 V, 447.975 A

TBHT = 4.08 V, 233.09 A

Omega = 1785 °C

Saturday, September 19, 2020, 13:26

Starting ramp down at Commence cooling at -2 A/min for TGHT and -1 A/min for TBHT 

Monday, September 21, 2020, 09:16

Turning off pumps 

Monday, September 21, 2020, 16:47

EVAP2 was vented with air and the tantalum oven was removed, the coating seems sintered. 

 2020-10-09 9:48 The target was installed the day before and left pumping over night. IGP1=4.7e-7Torr. leak check when water on, ok. Setting ramp up

 2020-10-09 10:16 Ramping up the target to 50A, 1.5A/30s. All good. Going to 200A same rate.

 2020-10-09 11:11 Target at 200A. Pyrometer 1170degC. ramping to 300A same rate. 

 2020-10-09 11:51 Target at 300A. Pyr. 1510. Ramping to 400A same rate.

 2020-10-09 12:27 Target at 400A. Pyr. 1820. Ramping to 500A same rate.

 2020-10-09 13:01 Target at 500A. Pyr. 2100. Ramping down to 0A 2A/30s.

 2020-10-13 11:13 Target was left under vacuum over the weekend. IGP1: 1.6e-7T water on- leak check ok. Ramping up 2A/30s to 100A.

 2020-10-13 11:47 All ok at 100A. Ramping up, 1A/10s to 200A.

 2020-10-13 12:08 All ok at 200A. Temp tc on foil 200degC. Ramping up, 1A/10s to 300A.

 2020-10-13 12:08 All ok at 300A. Temp tc on foil 340degC. Ramping up, 1A/10s to 400A.

 2020-10-13 12:48 All ok at 400A. Temp tc on foil 474degC. pyro shows 1050degC Ramping up, 1A/10s to 500A.

 2020-10-13 13:06 All ok at 500A. Temp tc on foil 615degC. pyro shows 1238degC Ramping down, 1A/10s to 0A.

 2020-10-13 17:04 The foil has been replaced due to suspected radiation transparency being the cause of low measured temperatures. A graphite and tantalum pack is now attached. Vacuum is back to IGP1: 9.5e-6T. Ramping up to 100A, 1A/10s.

 2020-10-13 17:31 All ok at 100A. Temp tc on foil 80degC. Ramping up, 1A/10s to 200A.

 2020-10-13 17:31 All ok at 200A. Temp tc on foil 310degC. Ramping up, 1A/10s to 300A.

 2020-10-13 17:31 All ok at 300A. Temp tc on foil 468degC. Ramping up, 1A/10s to 400A.

2020-10-13 17:31 All ok at 400A. Temp tc on foil 598degC. Ramping up, 1A/10s to 500A.

2020-10-13 17:31 All ok at 500A. Temp tc on foil 700degC. Ramping up, 1A/10s to 600A.

2020-10-13 17:31 All ok at 600A. Temp tc on foil 760degC. Ramping down, 1A/20s to 0A.

2020-10-14 17:09 foils for radiation focusing have been replaced and doubled to reduce transmission. IGP1:1.5e-5T , water leak check ok. Ramping up to 100A 1A/10s.

2020-10-14 17:30 All ok at 100A. Temp tc on foil 60degC. Ramping up, 1A/10s to 500A. 

2020-10-14 17:50 All ok at 200A. Temp tc on foil 378degC. 

2020-10-14 18:10 All ok at 300A. Temp tc on foil 550degC. 

2020-10-14 18:10 All ok at 400A. Temp tc on foil 705degC. 

2020-10-14 18:10 All ok at 500A. Temp tc on foil 816degC.Ramping up, 1A/10s to 600A.

2020-10-14 18:10 All ok at 600A. Temp tc on foil 906degC.Ramping up, 1A/10s to 625A.

2020-10-14 18:10 All ok at 625A, IGP1: 1.3e-5T. Temp tc on foil 924degC.Ramping up, 1A/10s to 650A.

2020-10-14 19:21 All ok at 650A. Temp tc on foil 940degC.Ramping down, 1A/10s to 0A. Pyrometer on foil 1200degC

 2020-10-15 18:51 : Setup installed during the day. Pumped down to IGP1:1.5e-5T , water leak check ok. Ramping up to 100A. 

 2020-10-15 19:30 : A heating element was showing bad signs and failed very early. ramping down and venting. 

Friday, October 16, 2020, 11:30

 Target mounted in EVAP2. Pump down started

Friday, October 16, 2020, 12:05

Pressure goes up. Checked with Ferran and he says that the valve IEVAP2:RV1 automatically closes sometimes. WEIRD, to be chacked.

Friday, October 16, 2020, 15:20

IGP2 bottoms at 0.2T, and doesn't increase recover if I close RV1 while it shouldn't (as shown before). --> Vented to restart from scratch

Friday, October 16, 2020, 15:45

Pumped down again, vacuum went down to 0.16 and then started raising until ~0.18. This time the valve was open indeed! opening and closing the valve had no effect on the vacuum as if the  booster pump was not effective

Friday, October 16, 2020, 16:27

Tried a THIRD time, this time effectively, to turn the turbo ON. I managed to, but the turbo makes weird spinning sounds every ~30 sec. Moreover, its pumping down plot seems quite weird  - see spike UP while pumping. Could it be related to a dysfunction of the backing pump?

 2020-10-27 10:24 setup introduced yesterday. Pumping over night IGP1: 5.7e-7T. Water leak check ok. Performing heating elements check.

 2020-10-27 10:43 Heating elements check show low cooling. Ramping up target 1A/15s to 200A.

 2020-10-27 11:54 all ok 200A, thermocouples show room temperature on cartridge and heat shield. Ramping up target 2A/10s to 300A.

 2020-10-27 11:54 all ok 300A, thermocouples show 28/25degC. Ramping up target 2A/10s to 400A.

 2020-10-27 11:54 all ok 400A, thermocouples show 36.5/29degC. Ramping up target 2A/10s to 500A.

 2020-10-27 11:54 all ok 500A, thermocouples show 48.9/33degC. Ramping up target 2A/15s to 550A.

 2020-10-27 12:43 all ok 550A, thermocouples show 55/34degC. Ramping up target 2A/15s to 600A.

 2020-10-27 12:43 all ok 600A, thermocouples show 61.5/35.2degC. Ramping up target 2A/15s to 625A.

 2020-10-27 13:14 all ok 625A, thermocouples show 64.6/34.2degC. Ramping up target 2A/15s to 650A.

2020-11-02 6:32: roughing on

2020-11-02 7:21: Turbo on for a while, IGP1:1.8e-5T . water leak check ok.

2020-11-02 7:47: IGP1:1e-5T . Ramping up target heater to 200A, 1A/10s.

2020-11-02 7:47: TGHT at 275A, pyrometer at 1300degC. Leaving it hot for 24h.

 2020-11-04 9:06: After 37h treatment, ramping down to 0A.2A/10s.

2020-11-04 9:46: target ramped down. Venting.

2020-11-04 17:30: Big amounts of outgassing non detected in GP1 coated some inner walls in evap2. The walls got cleaned with acetone. All as before now.

 2020-11-04 17:31: target installed with boat containing graphite container for outgassing. Roughing pump on.

 2020-11-04 17:49 turbo on, leaving it pumping over night.

 2020-11-05 11:32 leak check ok. Ramping up target to 200A 2A/10s.

 2020-11-05 11:53 IGP1:1.1e-6T . Ramping up target to 300A 1A/10s.

 2020-11-05 11:53 IGP1:1.2e-6T . Pyrometer:1320degC. Ramping up target to 400A 1A/10s.

 2020-11-05 11:53 IGP1:1.8e-6T . Pyrometer:1650degC. Ramping up target to 500A 1A/10s.

 2020-11-05 12:57 IGP1:3.4e-6T . Pyrometer:1910degC. Ramping up target to 525A 1A/10s.

 2020-11-05 13:02 IGP1:3.6e-6T . Pyrometer:1990degC. Leaving it hot for 1h.

 2020-11-05 14:00 IGP1:2e-6T stable . Pyrometer:1990degC. cooling down 2A/10s.

 2020-11-05 15:44 empty and naked boat in for heating up system and clean up. Turbo on.

 2020-11-06 16:58 IGP1:4e-7T leak check ok. Ramping up target to 500A. 1A/10s.

 2020-11-09 12:43 The target was left at 1500degC during the weekend. 

 2020-11-17 14:11 turbo pump off. Slow venting.

 2020-11-18 09:18 Evap2 vented. Target removed.

 Tests were performed with external power supply. No target boat or container.

Small power on heating small heating elements on parasitic target attached on isac heatshield with water cooling on. 

Objective: Coating the inner surface of a short tantalum boat with rhenium.

Result:

• The wire snnaped around 376 W (53 A, and 7.09 V) and 2170 °C (measured with filament pyrometer)
• The tube does not have indications of coating

Thursday, March 25, 2021, 11:23

Yesterday a heat shield was installed in the EVAP2.

The desired temperature of the Re wire is 2500 degC

A water leak was performed (elog 539 describes it), no leak was detected.

Tuesday, March 23, 2021, 11:01

Pressure 3.8e-7 Torr, current rate set to 6 A @ 0.5 A/min

The wire started glowing at TGHT =  4W, 7A, 0.56V

When reaching 7A the current was increased 0.5 A manually 

When reaching 16 A,  the current was increased 1 A manually until reaching 54 A when the wire snapped

Objective: Coating the inner surface of a short tantalum tube with rhenium.

Result:

• The wire snnaped around 376 W (53 A, and 7.09 V) and 2170 °C (measured with filament pyrometer)
• The tube is coated

Thursday, March 25, 2021, 11:23

Yesterday a heat shield was installed in the EVAP2.

The desired temperature of the Re wire is 2500 degC

A water leak was performed (elog 539 describes it), no leak was detected.

Tuesday, March 23, 2021, 11:01

Pressure 3.8e-7 Torr, current rate set to 6 A @ 0.5 A/min

The wire started glowing at TGHT =  4W, 7A, 0.56V

When reaching 7A the current was increased 0.5 A manually 

When reaching 16 A,  the current was increased 1 A manually until reaching 54 A when the wire snapped

Friday, March 26, 2021, 13:55

Yesterday a heat shield was installed in the EVAP2.

A 1mm thick rhenium wire was held within two copper brackets to pass through a Cu tube with the intention of coating its inside face.

The desired temperature of the Re wire is 2500 degC

A water leak was performed and no leak was detected

Objective: Coating the inner surface of a tantalum tube to make a destructive test and use a reference for the tantalum boats coatings

Results: 

Sunday, March 27, 2021, 11:23

No water leak

IGP1 = 3.7e-7 torr

Sunday, March 27, 2021, 16:10

The wire was heated in the same manner as the last three runs

From 0A to 7A the autoramp was set to 0.5A/min

At 8A the wire started the glow dimmly 

Above 8A, the wire was heated manually at 0.5A until 16A where the step was changed to 1A, 

the temperature was measured with the filament pyrometer every 2 A starting at 10A

At 42 A the step was changed to 0.6A until 42.6A, 4.38V (2020 °C), the wire was kept at that temperature for 90 min

After that time, the current was ramped down at 0.5A/min until ~20A when the current rampping was changed too 1A/min

 2021-03-30 7:48 Target loaded with parasitic target only. No container. Leaving under vacuum over night.

 2021-03-31 13:43 Leak check performed. Water on. Need to vent system, electric connection disconnected.

 2021-03-31 15:02 First test successfully finished. Venting to introduce container with radiating heating gun.

 2021-04-01 14:58 Vacuum 3.5E-7 torr. Leak check done. Ramping up target heater to 100A at 1A/10s

 2021-04-01 14:58 Vacuum 5E-7, 100A all ok. Temp foil 24.3DegC. ramping to 500A at 1A/10s.

 2021-04-01 14:58 Temp of foil not increasing much. Probably issue with TC. ramping down at 1A/10s to vent and inspect.

 2021-04-02 11:03 Target reinstalled, foil TC reinstalled. Vacuum 3E-7 torr. Leak check done. Ramping up container to 500A 1A/10s. 

 2021-04-02 13:07 Still isues with TC. Container ramped down at 1A/10s. Venting, brought heat gun to check TC.

 2021-04-02 15:10 TC connection fixed, origin of issues. Vacuum down to 3E-5 torr. Ramping up container to 200A 1A/10s.

 2021-04-02 18:32 TGTH 200A Tc temp 327.5degC. ramping up to 300A. 1A/10s.

 2021-04-02 18:32 TGTH 300A Tc temp 500degC. ramping up to 400A. 1A/10s.

 2021-04-02 19:17 TGTH 400A Tc temp 618degC. ramping down.

 2021-04-03 13:37 Foil was changed, ramped up to 200A at 1A/10s, Temp TC 360degC. Ramping to 300A. Vac 8.6E-6 torr.

 2021-04-03 13:59 300A Temp TC 580degC. Ramping to 500A, 1A/10s. Vac 7.6E-6 torr.

 2021-04-03 14:36 500A Temp TC 836degC. Ramping to 600A, 1A/10s. Vac 9E-6 torr.

 2021-04-03 14:36 600A Temp TC 960degC. Vac 1.1E-5 torr. Ramping down. 

2021-04-03 19:00 After venting an opening the evap2, it was found that remaining from a past heat treatment where on the Tantalum container. The sublimation of the material coated the inner walls of the evap.2. Now cleaned.

 2021-04-04 16:07 New container is in with heatshields, vacuum 8.6E-6 torr. leak check done. ramping up current, checking both pyrometer and TC, 1A/10s.

 2021-04-04 16:49 200A TGHT 250degC on TC 1130degC on pyrometer. Too low on TC, ramping down and venting to reposition TC in the foil. 

 2021-04-04 18:00 TC was slightly broken, repaired now. Pumping chamber.

 2021-04-04 18:41 ramping up to 200A 1A/10s.

2021-04-04 18:41 200A TGHT, TC 389degC pyro 1130degC. ramping to 400A 1A/10s.

2021-04-04 18:41 300A TGHT, TC 554degC pyro 1440degC. 

2021-04-04 18:41 400A TGHT, TC 735degC pyro 1720degC. ramping to 600A 1A/10s. 

2021-04-04 20:15 500A TGHT, TC 891degC pyro 1990degC

2021-04-04 20:15 553A TGHT, TC 975degC pyro 2129degC, ramping down.

2021-04-06 13:44 Parasitic target plus thermocouples were introduced in evap2 the day before and put under vacuum. IG1 3E-7 torr, leak check done. Putting some power into HE while ramping up container to 100A 1a/10s.

2021-04-06 14:06 20W on HE 100A on target container. Everything stable. Ramping up to 200A 1A/10s 

2021-04-06 14:06 20W on HE 200A on target container. Everything stable. Ramping up to 300A 1A/10s 

2021-04-06 14:06 20W on HE 300A on target container. Everything stable 4.6E-7 torr. Ramping up HE to 40W.

2021-04-06 14:06 40W on HE 300A on target container. Everything stable 4.6E-7 torr. Ramping up container to 400A 1A/10s.

2021-04-06 14:06 40W on HE 400A on target container. Everything stable 1E-6 torr. Ramping up container to 500A 1A/10s.

2021-04-06 15:52 35W on HE 500A on target container. Everything stable 1.6E-6 torr. Ramping up He to 65W.

2021-04-06 18:40 at 50W on HE one of them broke, system ramped down, vented, HE replaced, pumping down system again.

2021-04-07 10:38 HE at 70W, ramping up container to 200A 1A/10s. Vacuum 3.3E-7 torr.

2021-04-07 10:59 HE at 70W, 200A on container, ramping up container to 300A 1A/10s. Vacuum 3.9E-7 torr.

2021-04-07 10:59 HE at 65W, 300A on container, ramping up container to 400A 1A/10s. Vacuum 4.5E-7 torr.

2021-04-07 11:50 HE at 70W, 400A on container, ramping up container to 500A 1A/10s. Vacuum 7.8E-7 torr.

2021-04-07 11:50 HE at 65W, 500A on container, ramping up container to 553A 1A/10s. Vacuum 1.4E-6 torr.

2021-04-07 11:50 HE at 65W, 553A on container. All good, ramping down. 1A,10s.

 Tuesday, April 13, 2021, 09:51

IGP1 = 2.5e-7 Torr

Tuesday, April 13, 2021, 10:17 

The wire was heated in the same manner as the last three runs

From 0A to 7A the autoramp was set to 0.5A/min

At 8A the wire started the glow dimmly 

Above 8A, the wire was heated manually at 0.5A until 15A where the step was changed to 1A, 

the temperature was measured with the filament pyrometer every 2 A starting at 10A

At 42 A the step was changed to 0.5A until 44.5A, 4.61V (2120 °C), the wire was kept at that temperature for 6 hours.

After that time, the current was ramped to 0A at 0.5A/min.