Wednesday, September 21, 2011, 13:23

Target oven was wrapped with 3-Ta heatshields including the back block. 

Target is in the chamber and currently being pumped down.

Wednesday, September 21, 2011, 15:52  

IG @ 5.9e-6 Torr.  

TGHT stepped up to 85A, and pressure slowly rising. 

Started auto heating:  0.5A/min.  TGHT to max 580A.  

Thursday, September 22, 2011, 10:19 

Target was heated up to 580A, and held for 3 hrs. 

Currently IG @ 6.15e-6 Torr.

Auto-cooling started...

Thursday, September 22, 2011, 20:20 

Target oven was removed from the evaporator, and it was successfully sintered with TaC. 

Friday, September 23, 2011, 13:39 :

See attachment1: Archiver_TGHt0-580A.

Monday, September 12, 2011, 13:07

Target boat is loaded with coated TaC end caps for sintering.  Target boat is wrapped with 3 Ta-heat shields. 

Max TGHT = 580A

Monday, September 12, 2011, 14:58 

Vac @ 3.72e-6 Torr.  Stepping up TGHT to 90A; pressure starting to increase.

 Monday, September 12, 2011, 15:33

Evaporator tripped twice when TGHT was at 90A and 85A.  Lowered TGHT to 75A.

Tuesday, September 13, 2011, 09:56 

TGHT was on auto-heating and reached to 580A yesterday evening.  The auto cooling began at mid-night after heated for a few hours. 

The chamber will be vented shortly.

See attachment#1: striptool.

 Thursday, September 22, 2011, 20:21

Target oven was wrapped with 3 Ta-heat shields and has been pumping down.

IG currently @ 3.2e-6 Torr, BP @ 25mT. 

TGHT stepped up to 85A, 

Began auto-heating: TGHT to max 580A @ 0.5A/min. 

Monday, September 26, 2011, 10:23 

TGHT reached to 580A on last Friday and was held at that current for 3hrs then followed by the auto-cooling.

Chamber was vented.

Target oven looks great.

 Monday, July 18, 2011, 15:53:  Target oven was coated with TaC and let dry over the weekend.  The target is now installed in the evaporator and currently being pumped down.  No Ta-heat shields are required for LP target ovens. 

Wednesday, July 20, 2011, 11:42:  Evaporator had to be vented to remove the target because Ta-heat shields were actually required for UCx target at 2uA p+.  Target heater was never turned on.   After removing the target oven, it was rolled around Ta wire; this prevent the Ta foil to stick on the oven.  Then 3 Ta-heat shields were wrapped around it, plus 2 shields on the back block.  The evaporator has been pumped down over night, currently vac @ 1.30e-6 Torr. 

Wednesday, July 20, 2011, 12:35: TGHT stepped up to 110A, pressure began to increase exponentially.   Brought THGT down to 100A. Will being auto cooling soon.

Wednesday, July 20, 2011, 12:48:  Auto heating beings.  2A/min, max current @ 520A.

Wednesday, July 20, 2011, 17:49:  TGHT reached to 520A.  Increased heater to 570A according to last year UCx procedures.

Wednesday, July 20, 2011, 19:46:  TGHT held at 570A for about 2 hours.  Cooling down has begun.  Set rate at 0.5A/min for slow cool down.  

Thursday, July 21, 2011, 12:20 :  TGHT cooling rate increased to 2A/min at about 10:25 am.  At 10:55am, TGHT p/s tripped off, and the water valve was closed.  Not sure what was the reason.  Rest p/s and water valve, and turned back the p/s and continue to cool down from 74A.  (see attachment#1: striptool)

Thursday, July 21, 2011, 14:45 :  TGHT off, chamber about to be vented into atmosphere.  

Wednesday, August 03, 2011, 20:27 :  Target was wrapped with 3 new Ta-heat shields and 2 around the back block.  The tar from the previous UCx conditioning remained in the chamber was removed and cleaned.  Chamber is currently being pumped down, vac currently @ 8.3 e-6 Torr. 

Wednesday, August 03, 2011, 21:01:  Begin to step up TGHT, currently vac @ 7.5e-6 Torr.

Wednesday, August 03, 2011, 21:30 : TGHT stepped to 110A, vac raising exponentially. 

Wednesday, August 03, 2011, 21:34:  Brought down TGHT to 100A, and began auto heating.  Set rate @ 2A/min, max current to 520A. 

Thursday, August 04, 2011, 00:33:  THGT is ramping up nicely and the vacuum is coming down.  It should reach to 520at 01:30.  I asked ISAC Ops to cool down the target heater at 04:00.

Thursday, August 04, 2011, 10:26 :  TGHT has reached to 0A.  Chamber will be vented.  See attachment1 for striptool.

Friday, September 09, 2011, 10:05

Target oven coated with TaC, and wrapped with 3-Ta heat shields.  Chamber is currently being pumped down. 

TGHT @ 140A, IG 9.2 e-6 Torr, BP 20mT. 

Started auto heating, rate @ 2A/min, to max current of 820A. 

Friday, September 09, 2011, 12:25

Evaporator tripped off at 163A. 

Stepped TGHT back to 160A.  Vacuum holding at 4.3e-5 Torr.

Monday, September 12, 2011, 09:55

Evaporator was cooled down over the weekend. 

Chamber will be vented shortly.

See attachment#1: striptool

Tuesday, August 23, 2016, 17:33

Target boat coated with TaC (sprayed) and wrapped with Ta-heat shield. 

chamber is currently being pumped down. Vac currently at 3.3e-5Torr. 

TGHT to be ramped up to 580A.

Initiate autoramping at 0.1A/min

 Wednesday, August 24, 2016, 10:34

TGHT at 111A/1.07V.  Vac at 7.5e-6 Torr and coming down.

Increase ramping rate to 2A/min.

 Thursday, August 25, 2016, 12:01

TGHT has been stabilized at 580A/6.89V for over 24 hours.  Vac at 7.5e-6 Torr.

Initiated cooling at 2A/min.

 Monday, September 12, 2016, 17:30

Container was properly sintered.

Thursday, January 23, 2014, 16:26 

 A new target boat was sprayed with TaC coating and let dry, the coating appeared slightly bubbly once dried [see attached photos].

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

The boat was installed in Evap#1, chamber is currently being pumped down overnight.

Laura Lambert wrote:

Thursday, January 23, 2014, 16:26   A new target boat was sprayed with TaC coating and let dry, the coating appeared slightly bubbly once dried [see attached photos]. The target boat was wrapped with 3-layers of Ta-heat shield. The boat was installed in Evap#1, chamber is currently being pumped down overnight.

 Friday, January 24, 2014, 14:42

Chamber was pumped down to 5.9e-6 Torr overnight.

TGHT was stepped up to 35A.

Waited 20min, vacuum consistently stable, auto-ramp initiated at 0.2A/min and max setpoint to 580A.

Good vacuum: 5e-5 Torr. Bad vacuum: 6e-5 Torr.

Laura Lambert wrote:

Laura Lambert wrote: Thursday, January 23, 2014, 16:26   A new target boat was sprayed with TaC coating and let dry, the coating appeared slightly bubbly once dried [see attached photos]. The target boat was wrapped with 3-layers of Ta-heat shield. The boat was installed in Evap#1, chamber is currently being pumped down overnight.    Friday, January 24, 2014, 14:42 Chamber was pumped down to 5.9e-6 Torr overnight. TGHT was stepped up to 35A. Waited 20min, vacuum consistently stable, auto-ramp initiated at 0.2A/min and max setpoint to 580A. Good vacuum: 5e-5 Torr. Bad vacuum: 6e-5 Torr.

 Monday, January 27, 2014, 11:01

TGHT reached 580A over the weekend.

TGHT auto-cooldown initiated at 2.0A/min.

 Tuesday, January 28, 2014, 15:51

Chamber cooled down overnight, vented and opened up this morning.

Target boat looks good! [See attached photos]

Tuesday, May 08, 2012, 07:32

Target oven is filled with 240 discs of SiC/C, and wrapped with 3 Ta-foils.

Tot mass= 31.95g (SiC + C foil + Org)

Tot length packed @ 8.2cm

Target was installed in the chamber yesterday and has been pumped down to low 10e-6 torr.

Increased TGHT to 70A and vacuum is starting to rise, currently at 2.6e-6 Torr.

Max target current = 820A or until there is no further reaction. 

 Tuesday, May 08, 2012, 08:55

Pressue is slowly coming down after heating for a while at 70A. 

Initiated auto heating at 0.5A/min. Parameter set for increasing current if <4.0e-5 torr, and backing off if >5.0e-5 torr.

Wednesday, May 09, 2012, 10:31

 There seems to be a pipe leakage in the ISAC-I B2 level, and the cooling water for the evaporator #1 is connected to the pipe.  

The TGHT was tapped down from 115A, and the p/s was turned off.  The water valve is now shut, and Curtis B. is looking into it.  

Wednesday, May 09, 2012, 13:44

As per Curtis, the drainage pipe was leaky, and it has been fixed. The evaporator is now turned back on.  TGHT was tabbed up to 115A, and has remained at that current for an hour.  The pressure is slowly raising, current at 4.6e-6 Torr.

Wednesday, May 09, 2012, 14:24

Initiated TGHT...

Saturday, May 12, 2012, 23:38 

TGHT is ramping up very slowly (currently at 270A) due to pressure restriction.  It has already taken over 4 days.  (see attachment 1: TGHT 0_270A)

Changed the parameter to <5.0e05 Torr for stepping up in current and >6.0e-5 Torr for backing off current.

 Sunday, May 13, 2012, 20:44

Pressure has started to come down to 3e-6 Torr.  Increased heating rate from 0.5A/min to 1.0A/min.

 Monday, May 14, 2012, 01:09

TGHT has reached to 820A and been holding at that current for about 3hr.  The pressure is coming down steadily, currently at 1.6e-5 Torr.

Asked ISAC OPS (Ed P.) to initial the auto-cool down at 03:00h, at 2A/min.

The target should be ready by 10:00h.

 Monday, May 14, 2012, 10:56

TGHT is now at 0A (see attachment 2).  The chamber is now being vented.  The target will be inspected.

Thursday, May 17, 2012, 12:51 

The target looks good and was tested in the teststand, see https://elog.triumf.ca/TIS/Test-Stand/97

It will be used as SiC#27.  

Thursday, October 25, 2012, 14:50

Previous sintering BeO tests, pellets 1 to 4 were done in Evaporator#2.

3 BeO pellets were made.  Each weights about 1.3g (including org mass). 

A piece of Re foil (0.002" thick) is used as the under layer to protect the reaction between Be(g) and the Ta-boat.  (see attachment#1)

Another layer of Ta-foil is used as the heat-shield to wrap around the Ta-boat.

The chamber is currently being pumped down. 

TGHT will be ramped up to 600A (~1360C) at 0.2A/min.

The pressure, voltage and current will be closely monitored. 

If the Ta-boat survives, the TGHT will continue to ramp up to max 800A (~1580C).

 Friday, October 26, 2012, 11:15

Chamber has been pumped down over night. 

IG1 @ 8.93e-6 Torr. 

Auto-ramping parameter:

Good Vac @ 2.0e-5 Torr, Bad Vac @ 3.0e-5 Torr.

rate @ 0.2A/min. 

 Tuesday, October 30, 2012, 10:57

TGHT has reached to 370A. The organic binder has burnt off. 

The pressure came down to  6.6e-6 Torr, but it is slowly going up to 8.6e-6 Torr (something is outgassing... Dissociation of BeO --> Be(g) + O(g) ?).  BP @ 39mTorr.  (see attachment#2).

 Wednesday, October 31, 2012, 12:07

TGHT has reached to 600A/6.338V for just over 6 hours.  IG is slowly coming down fro 1.2e-5 Torr.  BP @ 38mTorr. (see attachment #3)

 Wednesday, October 31, 2012, 16:49

Vacuum is coming down to 8.49e-6Torr.  TGHT has stayed at 600A/6.24V for over 11hrs.  (see attachment #4)

Auto-cooling initiated at 1A/min. 

The chamber will be vented tomorrow and the material will be inspected.

 Thursday, November 01, 2012, 10:57

TGHT has reached to 0A.  Vacuum holding at 1.9e-6Torr.

Turning off P/S and pumps prior to venting chamber.

Oiled as per work permit:  I2019-03-26-2.

Tuesday, March 26, 2019, 08:53: Start RP1

Tuesday, March 26, 2019, 09:03: Holding at 0.303T on CG2. 

Tuesday, March 26, 2019, 09:10: Turned off RP1. Vent chamber slightly. Close VV1. Restarted RP1.

Open RV1.

Tuesday, March 26, 2019, 09:13: Vacuum stalls out at approx 0.300T.

Tuesday, March 26, 2019, 09:16: Shut off RP1. Contact Vacuum group.

 Checked as per work permit: I2019-03-26-5

Tuesday, March 26, 2019, 13:50: Filter checked. OK

Tuesday, March 26, 2019, 14:00: Tees checked. OK.

Tuesday, March 26, 2019, 14:05: Line / bellows. Fail

Tuesday, March 26, 2019, 14:11: New line / bellows. OK 

Tuesday, March 26, 2019, 14:19: TP1 on, IV1 opened. Vacuum @ 3.5e-05T and dropping.

Pumping down evap1. Dispose of the old line. Replacement successful. No contamination was found on the swipes.

Tuesday, March 26, 2019, 14:36: Vacuum @ 1.12e-05T and dropping. 

Saturday, August 29, 2015, 16:10: Roughing

Saturday, August 29, 2015, 16:10: Starting turbo

Saturday, August 29, 2015, 16:12: Turbo running. IG1 at 2.4E-4 T

Thursday, August 04, 2011, 17:44:  All the UCx material from target oven 38634-3 was recovered and repacked in this new oven.  Total mass recovered = 45.911g and packed in 10.7cm length.  Target is currently being pumped down. 

Thursday, August 04, 2011, 20:23:  Current vac 5.6e-6 Torr.  Stepping up TGHT to 104A, vac increasing slowly.  Being auto heating @ 2A/min to 200A. 

Thursday, August 04, 2011, 21:32 THGT @ 200A,( see attachment1: 200A.jpg)

Friday, August 05, 2011, 09:04:  TGHT reached to 520A, and was cool down last night by ISAC Ops.  (See attachment2: re-conditioning).  Target looks good! 

Tuesday, September 13, 2011, 16:51

Target is wrapped with 3-Ta heat shields. 

Loaded with 555 SiC discs (total mass 64.24g)

18cm in length.

D-end cap on one end, and a regular end end on the other.

Chamber is currently being pump down

 Wednesday, September 14, 2011, 09:58

Evaporator has been pumped down over night, currently IG @ 1.71e-6 Torr. BP @ 23mT.

The target will be heated up to 550A and will wait to see any reaction happen before increasing TGHT (Max 820A).

TGHT stepped up to 90A, local @ 87A.  Pressure slowly rising, IG @ 2.7e-6 Torr. BP @ 23mT. 

Start auto-heating @ 0.5A/min to max TGHT @ 500A.  

 Friday, September 16, 2011, 00:27:

TGHT @ 250A and pressure has already started to come down, currently at 2.8e-5 Torr.  

Increased TGHT rate from 0.5A/min to 2A/min, and pressure started to rise.  Stopped auto-ramping after pressure increased to 4.4e-5 Torr.  (see attachment#1: TGHT_270A-300A.jpg).

Decreased TGHT rate back to 0.5A/min and changed pressure limit to 3.0e-5 Torr.  

Friday, September 16, 2011, 01:49 :

TGHT @ 347A, and pressure seems to come down slowly. 

Change TGHT auto heating to 550A and pressure limit at 2.5e-5 Torr.  Vac currently at 2.4e-5 Torr.  Ramping rate at 0.5A/min. 

Friday, September 16, 2011, 10:58  

TGHT reached 580A and no spike in the vacuum.  Ramping up TGHT to 590A, keeping pressure limit @ 1.35e-5 Torr,

Currently IG @ 1.33 e-5 Torr.  Current TGHT @ 585.5A, local @  579A.

(see attachment 3: TGHT_580A)

Friday, September 16, 2011, 11:35:

TGHT reached to 590A, not much of out-gassing.  Pressure increased from 1.30e-5 Torr to 1.40e-5 Torr.  

Continue ramping up TGHT, set to 700A, pressure limiting @ 1.5e-5 Torr.

Friday, September 16, 2011, 15:29:

TGHT reached to 700A, local @ 692A; pressure was stable at 1.38e-5 Torr throughout the whole time.  

Continues ramping up TGHT to 820A (max) at 0.5A/min; pressure limiting @ 1.5e-5 Torr. 

Friday, September 16, 2011, 22:05 

TGHT reached to 820A (local 810A) and held for ~3hrs.  IG @ 5.4e-6Torr and coming down, BP @ 20mT. 

See attachment#4:  TGHT_820A.

TGHT cooling down begins... 

 Monday, September 19, 2011, 10:08

TGHT was cooled down over the weekend. 

See attachment#4: archiver_TGHT_0-820A. 

Currently, IG @ 6.9e-7 Torr, BP @ 27mT.

Evaporator will be vented. 

Tuesday, September 20, 2011, 08:51 

Target turned out well.  

D-cap was removed and replaced with a regular TaC-coated sintered endcap with a graphite foil.  

See attachments for details.

Target is now ready for assembly and test for test-stand. 

Tuesday, March 04, 2014, 15:43

Theses endcaps (4) were previously sinterred in Evap#2 but some surfaces were not fully sinterred. (See Evaporator2 E-log ID119: https://elog.triumf.ca/TIS/Evaporator_2/119)

The endcaps are inserted in a target boat wrapped with 3 heat-shields. 

Chamber is currently being pumped down. 

TGHT will be rampped up to 580A and heat for >4hrs.

John Wong wrote:

Tuesday, March 04, 2014, 15:43 Theses endcaps (4) were previously sinterred in Evap#2 but some surfaces were not fully sinterred. (See Evaporator2 E-log ID119: https://elog.triumf.ca/TIS/Evaporator_2/119) The endcaps are inserted in a target boat wrapped with 3 heat-shields.  Chamber is currently being pumped down.  TGHT will be rampped up to 580A and heat for >4hrs.

 Wednesday, March 05, 2014, 10:20

IGP1 = 9.2e-7 Torr.

TGHT was stepped up to 35A and stabilized after half an hour.

Auto-ramp initiated at 2.0A/min, max setpoint = 580A.

Vacuum started to climb too fast, auto-ramp aborted.

Will step up manually...

 Wednesday, March 05, 2014, 12:18

Slowly stepped up to 100A manually.

Vacuum stable.

Initiating auto-ramp at 1.0A/min

 Wednesday, March 05, 2014, 13:17

IGP1 = 9.8e-6 Torr.

Current = 200A

Vacuum stable.

Stepping ramping rate up to 2.0A/min.

 Wednesday, March 05, 2014, 16:12

IGP1 = 4.6e-5 Torr, TGHT = 548A

Stopped auto-ramp to allow vacuum to settle back down.

Waited ~10min

IGP1 = 3.6e-5 Torr

Re-initiating auto-ramp at 2.0/min

Laura Lambert wrote:

John Wong wrote: Tuesday, March 04, 2014, 15:43 Theses endcaps (4) were previously sinterred in Evap#2 but some surfaces were not fully sinterred. (See Evaporator2 E-log ID119: https://elog.triumf.ca/TIS/Evaporator_2/119) The endcaps are inserted in a target boat wrapped with 3 heat-shields.  Chamber is currently being pumped down.  TGHT will be rampped up to 580A and heat for >4hrs.    Wednesday, March 05, 2014, 10:20 IGP1 = 9.2e-7 Torr. TGHT was stepped up to 35A and stabilized after half an hour. Auto-ramp initiated at 2.0A/min, max setpoint = 580A. Vacuum started to climb too fast, auto-ramp aborted. Will step up manually...  Wednesday, March 05, 2014, 12:18 Slowly stepped up to 100A manually. Vacuum stable. Initiating auto-ramp at 1.0A/min  Wednesday, March 05, 2014, 13:17 IGP1 = 9.8e-6 Torr. Current = 200A Vacuum stable. Stepping ramping rate up to 2.0A/min.  Wednesday, March 05, 2014, 16:12 IGP1 = 4.6e-5 Torr, TGHT = 548A Stopped auto-ramp to allow vacuum to settle back down. Waited ~10min IGP1 = 3.6e-5 Torr Re-initiating auto-ramp at 2.0/min

 Wednesday, March 05, 2014, 23:02

End caps have been heated for 6.5 hours at 580A. Vac @ 7.4e-6 Torr. 

Auto-cooilng initiated at 2A/min. 

 Thursday, March 06, 2014, 14:48

The TaC on the endcaps is fully sinterred. (see attachment#1).

2011-09-01:

• Glove box was leaking (air/argon) between base and box. Light was shining through.
• Removed old neoprene seal at base.
• Resealed glove box between base and box with DAP Butylflex. No light shining through after repair.
• Replaced rubber disks at 4 feed-throughs.
• Maico Dalla Valle replaced the inner ring on the glove ports. See dwg ITA2954 and ECO-2418.
• After the repair, the glove box has a significantly reduced leak, estimated to a few liters per minute at an air pressure of  0.5" H₂O.

Evaporator drawings can be found on ITA2900D

Work Permit: 2011-09-01-2