Wednesday, May 04, 2022, 09:42

Yesterday, a second graphite cartridge was installed in EVAP1, it consists of the old, 3-body cartridge design, and was sanded on the outside to be able to fit a P2N container. 

First I tried ramping manually, but the heating tripped because pressure was too high.

Then the parameters were set as previously, but it tripped again

IGP1= 2e-5 Torr

Good vacuum 8e-2 Torr

Bad vacuum 5e-1 Torr

Autoramp set to 1A/10s to 500A

Autoramped up to 700A @ 1A/10s. 

Wednesday, May 04, 2022, 11:40

Another ramping trial, with different heating rate:

IGP1= 3e-5 Torr

Good vacuum 8e-2 Torr

Bad vacuum 5e-1 Torr

Autoramp set to 1A/20s to 700A

Autoramped up to 700A @ 1A/20s.  

Wednesday, May 04, 2022, 15:50

IGP1= 3e-2 Torr

Good vacuum 8e-2 Torr

Bad vacuum 5e-1 Torr

Autoramp set to 1A/20s to 730A

Autoramped up to 720A @ 1A/20s.  

Pressure dropping while current is increasing at autoramp rate.

Wednesday, May 04, 2022, 16:10

From 730A, once the pressure went down to ~1E-3T, the current was suddenly raised to 750A and 770A to see if significant pressure increase was noticed, but small bumps reaching 1.5E-3T were not considered a sign of further reduction.

The rampdown started from a pressure ~1E-3T, from 770A to zero with rate 2A/10s 

Wednesday, October 19, 2022, 10:27

Cartridge-220510Cx was installed in the EVAP1 and pumped down yesterday.

Material will be further conditioned at 450A for 4 hours.

The material will be conditioned inside a container tube with both ends open at the ends.  Two springs are inserted at the ends of the graphite cartridge to contain the material as graphite caps not inserted.

IGP1 = 7.8e-07 Torr

Good vacuum = 5e-4 Torr

Bad vacuum = 5e-2 Torr

Will autoramp @2A/30s (4A/min) to 40 A and then to 120A.  Fast ramp rate because material had previously been conditioned

Wednesday, October 19, 2022, 12:23

TGHT 450A, 5.2 V

Will leave for 4 hours and then begin ramp-down.

Wednesday, October 19, 2022, 16:21

IGP1= 3.1e-06Torr

450A, 5.2V

Start rampdown @- 2A/min

Thursday, October 20, 2022, 09:23

IGP1= 4.6e-7 Torr

Friday, July 04, 2014, 10:13

Target boat contains 4 set of samples.  Each sample consists of 5pack ThO2/Nb.  (see photos).

The container is wrapped with 3 layers of heat shield. 

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

Chamber has been pumped over night, pressure at 4.20e-6 Torr.

The purpose of this test:

1.  Will the Ta- target boat survive at that current?

2.  How will ThO2 sintered?  Shrinkage? Grain-growth? mass loss? density? SEM will be done later.

3.  How will the pressure behave at the max operating temperature (or current)?

  Friday, July 04, 2014, 12:29

Stepped up TGHT to 40A,  Vac went to max at 3.5e-5 Torr and is coming down.

Auto-ramping initiated. 

 Tuesday, August 19, 2014, 10:20

Sample was successfully sinterred to 520A. 

SEM on raw, treated powder, and sintered samples were perform.  Pressure vs current plot can also be found. (see attachments)

More information can be found here:

https://www.dropbox.com/sh/fj78m7tyy7mj99p/AABfm-fQMeoaWhf6HjT8Vzn1a

John Wong wrote:

Friday, July 04, 2014, 10:13 Target boat contains 4 set of samples.  Each sample consists of 5pack ThO2/Nb.  (see photos). The container is wrapped with 3 layers of heat shield.  TGHT will be ramped up to 520A at 0.1A/min. Chamber has been pumped over night, pressure at 4.20e-6 Torr. The purpose of this test: 1.  Will the Ta- target boat survive at that current? 2.  How will ThO2 sintered?  Shrinkage? Grain-growth? mass loss? density? SEM will be done later. 3.  How will the pressure behave at the max operating temperature (or current)?   Friday, July 04, 2014, 12:29 Stepped up TGHT to 40A,  Vac went to max at 3.5e-5 Torr and is coming down. Auto-ramping initiated.

Wednesday, July 09, 2014, 13:55

TGHT reached 520A tuesday morning. [see attached archive screenshot]

Initiated auto-cool at 1.0A/min tuesday afternoon.

Vented in air and took samples out of EVAP1 wednesday morning. [see attached sample photo]

 Thursday, August 14, 2014, 17:54

Target container consists of 240 discs of ThO2/Nb discs.  The container is not required to be wrapped with Ta-heat shields.  

One end cap is inserted on the left end (wrt to the ionizer pointing into the page).  

The chamber is currently being pumped down.  

TGHT will be heated up to 520A, ramping rate at 0.1A/min.

 Friday, August 15, 2014, 15:55

A sampling filter has been installed by RPG; this will be used to analyze any volatile particle releases out from the target. 

An alpha monitor is being install on the exhaust line; air sample will be collected for further analyzse.  

Vacuum has come down to 7.2 e-6 Torr.  

Target heat will be ramped up on Monday since it is coming late to the day.  

Chamber will continue to pump down.  

Next week, RPG will start taking the first air sample before the target is heated up.  More discussion on that later...

 Monday, August 18, 2014, 11:18

Chamber has been pumped down over the weekend. 

Pressure @ 2.67e-6 Torr. 

Note:  RPG decides not to take any gas sample since the filter installed in between the backing and turbo pumps is sufficient for the analysis.

TGHT stepped up to 30A.

 Monday, August 18, 2014, 14:17

TGHT stepped up further to 40A; Pressure stabalized >100min at 4e-6 Torr, bp @ 44mTorr.

Initiated auto-ramping.

 Thursday, August 21, 2014, 17:20

TGHT continues to ramp up and pressure is coming down - Currently @ 7.7-6 Torr.

Increased TGHT ramping rate to 0.5A/min. 

The sintering process will be complete by Friday (Aug 8, 21), and the chamber will be cooled down over the weekend.

By Monday, the chamber can be vented in air, and the target can be removed from the chamber.  Then RPG can remove the filter in the backing pump for the analysis.

 Friday, August 22, 2014, 08:57

TGHT has reached to 520A for just over 10 hrs.  Vac at 8.6e-6 Torr, BP @ 40mTorr.

Cooling initiated at 2A/min

 Friday, August 22, 2014, 16:52

Target was cooled to room temp and was removed from the chamber.

5 discs were removed from the target because it was shrunk up; the rest of the discs were fine.  

2 extra Nb foils and end cap were inserted. 

Target is stored in the Hotlab - awaiting to be assembled.

Wednesday, September 07, 2011, 15:31

125 discs of TaC/C

Total discs mass = 125

Total length = 4.5mm

Total Mass = 30.41g

No Ta-heat shield. 

Left opening with D-TaC-sintered cap, and Right opening with regular TaC-sintered cap (orientation with the ionizer tube pointing out of the page).

Target is currently in the evaporator and being pumped down. 

Thursday, September 08, 2011, 09:13

Evaporator has been pumped down over night, IG1 currently at 1.74 e-6 Torr.   

Will begin TGHT, max @ 580A.

TGHT @ 50A, vac stable @ 1.7e-6 Torr.

Thursday, September 08, 2011, 10:18 

THGT @ 90A, pressure is increasing, currently at 4.7e-5 Torr and going up. 

 Thursday, September 08, 2011, 10:25

Auto-heating has begun. Set rate at 2A/min to max current 580A.

Incrementing if vac < 5.0 e-5 Torr, backing off if vac > 6.0 e-5 Torr. 

Friday, September 09, 2011, 07:58

TGHT auto cool down started @ 02:00, and at 0A.  IG currently @ 1.3e-6 Torr.  Venting chamber in progress.  Target will be removed from the evaporator afterward.

Target looks good :)  No signs of damage on the end cap or the target oven overall. 

See attachment 1 for the striptool. 

See attachment 2 and 3 for the target and endcaps after the sintering process.

 Friday, September 24, 2021, 15:38

Full target loaded with ~500 non-active foils plus 4 active foils.  

Initial pressure when heating: 6.6E-5 T 

Manually went to:

TGHT=125 A 

TBHT=50 A

with increments of 5 A each. Pressure has little spikes but mostly unchanged (going down, actually).

Friday, September 24, 2021, 15:42

Manually went to

TGHT=180 A 

TBHT=80 A

Pressure going up steadily, max pressure <2E-4

Friday, September 24, 2021, 16:48

From TGHT=180 A, TBHT=80 A we are aiming at going to TGHT=580 A and TBHT=230 A in increments of 50 A each and leave it there for a total of 5 minutes after nominal parameters are reached. Initial pressure 1.3E-5 T.

Friday, September 24, 2021, 17:01

Fast rampup done, we were up there in 30 seconds.

TGHT VOL = 6.6 V

TBHT VOL = 3 V

Max pressure 2E-3 T. Both TGHT and TBHT were shut off abruptly on purpose. 

 Friday, November 05, 2021, 13:23

Full target loaded with ~500 non-active foils plus 4 active foils.  

Initial pressure when heating: 1.6E-5 T 

Manually went to:

TGHT=125 A 

TBHT=50 A

with increments of 5 A each. Pressure has little spikes but mostly unchanged (going down, actually).

Stayed at those values for 2 min 

Friday, November 05, 2021, 13:37 

Manually went to

TGHT=180 A 

TBHT=80 A

maximum pressure 6.6e-5 Torr

Friday, November 05, 2021, 13:43

IGP1 =  2.45e-5 Torr

We are aiming at going to TGHT=580 A and TBHT=230 A in increments of 50 A each and leave it there for a total of 5 minutes after nominal parameters are reached 

Friday, November 05, 2021, 13:55

IGP1 =  1.7e-5 Torr

Heating done, we stayed at 530A for a bit long (~15 sec) during the heating so the total heat time at 580A was interrupted at 4 mins 50 seconds instead of 5 mins. All good, max pressure during the heating was 0.013 T.

Wednesday, November 24, 2021, 10:38

A first, short "FullTa1" target was loaded into the evap1. It consists of a short container (10 cm) with lateral thickness of ~0.2mm. The ends of the target connect with the TGHT terminals through two copper adapters.

After pumpdown down to ~4E-5 T, the TGHT was ramped gradually to 200 A in the next ~5 mins, leaving the target at 200 A for about 10 mins. Then, the current was increased fastly to 450 A in about 30 seconds, and was left at 450 A for a minute. 

Note: the one minute at 450 A started when the TGHT voltage drop across stabilized, considered a sign of temperature homogeneity across the target container

Wednesday, November 24, 2021, 14:34

The second short container "FullTa2" target has been loaded and heated, following the same procedure as above. In this case, the initial pumpdown went to a lower pressure (1.5E-5 T instead of ~4E-5 T) resulting in lower pressure throughout the whole procedure

Wed May 11 16:20:21 2011:  The HP-FEBIAD (w.o#38481-8) was filled with SiC (8.5mm, 555 discs).  The target is wrapped with 3 Ta-heat shields and is in the evaporator, which is being pumped down. 

Thu May 12 10:52:48 2011:  The evaporator ion gauge, IEVAPIG1 filament burnt out.  The gauge comes in two filaments, so it is now running on the second one.  The chamber has been pumped down overnight, currently it's @ 2.29e-6 torr. 

Thu May 12 11:15:59 2011:  TGHT was stepped up to 80A, vac @ 2.47e-6 Torr.  Begin auto heating at 1A/min to 820A and will increase the rate to 2A/min if the vacuum is stable. 

Thu May 12 12:27:35 2011:   TGHT went up to 101A, and the vacuum started to reach close to the trip limit (8.7e-6 Torr).  TGHT was auto ramped down but the vacuum kept rising and tripped off the heater @ 94A.  TGHT was turned back on after 30mins, vac @ 8.7e-6 Torr.  TGHT was tapped up slowly to 95A.  The ramping rate has also decreased to 0.5A/min.  (See attachment#1: high_vacuum)

Thu May 12 12:58:51 2011:  Lowered TGHT to 90A.  Vac stayed at 7.8e-5 Torr.

Fri May 13 15:47:42 2011:  TGHT @ 128A, incrementing rate @ 1A/min, Vac @ 5.4e-5 Torr after 30 hrs. (See Attachment#2:  current_pressure_30hrs)

Fri May 13 16:22:54 2011:  THGT and vacuum over the past 12 hrs.  (See Attachment#3: current_pressure_past12hrs)

Mon May 16 11:03:54 2011:  THGT reached to 820A and held for over 12 hrs.   (See Attachment#4_Sintering process). 

Tue May 17 16:26:34 2011

Problem Occurred: 

• The end caps of the target got vaporized after the sintering process.  (See Attachment#5:  end_caps_vaporized)
• The caps were not coated with TaC and a D-shaped graphite foil were used. 
  

Solutions: 

• The caps were removed - No damage to the target oven.  (See Attachment#6/#7: left_end/ right_end )
• New caps  were used and coated with TaC.   Two circled-graphite foils were used on the both ends and then sealed with the TaC coated caps. (See Attachment 8: TaC_coated_endcaps)
• Re-heating the target to 820A.

Tue May 17 16:35:13 2011:  Target is wrapped with 3 Ta-heat shields.  The target is in the evaporator which is being pumped down.  

Tue May 17 19:34:55 2011:  TGHT stepped up to 80A, Vac holding at 5.2e-6 Torr.  Auto heating began after 25 mins later.  Rate set at 2A/min to max 820A. 

 Tue May 17 22:02:36 2011:  TGHT @ 382A, Vac @ 1.23 e-5 Torr.  Increased ramping rate @ 3A/min.  Cooling down process will begin at 04:00 of May18, 2011;  ISAC Ops will help to start the auto cooling process.

Wed May 18 11:39:47 2011:  The cooling down process ended; TGHT reached to zero.  The camber will be vented. 

Wed May 18 13:12:24 2011:  Target is wrapped with 3 Ta-heat shields and is installed in the evaporator which is being pumped down.

Wed May 18 23:11:42 2011:  TGHT was raised to 40A and held for about 6 hours; Vac gradually came down to 2.1e-6 Torr.  TGHT increased to 90A and pressure is going up, currently vac @ 2.9 e-5 Torr.  Auto heating will begin soon at 0.5A/min --> 820A.  

Thu May 19 10:23:34 2011:  TGHT at 92A/0.32V, vac @ 4.47 e-5 torr.  (See Attachment#1: heating_past_12hrs)

Tue May 24 10:22:59 2011:  TGHT reached to max currrent 820A and held for over the long weekend.  The cooling process began at 15:00 yesterday.  Evaporator is vented.  P/S off.

Mon May 30 17:03:01 2011

The end caps of the target after the sintering process were found damage; the caps were vaporized just like the previous SiC target w.o#38481-8.  (See attachments#2: SiC000-003).  After some investigation, it looks like some reaction had occurred when the target heater was ramped up beyond 550A.  (See Attachment#3: SiC_striptool).

The yellow solid will be analyzed using EDX/SEM.  More details will be posted later....

Wednesday, September 14, 2011, 10:16 

SEM/EDX were done.  See attachment #9 for the EDX results. 

The formation of the yellow solid is the condensation of silicon.  As seen on the EDX results, the solid is mainly Si, C and some trace of Al (could be from the loading rod).  

The new D-end cap has be used to allow a better out-gassing.  

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, 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.  

March 28, 2011

12:28:  Target oven is wrapped with 3 Ta-heat shields.  Pumping down evaporator

March 29,

12:14  Evaporator has been pumped down over night.  Vac @ 1.74e-6 Torr. 

12:24  TGHT @ 20A, Vac @ 1.66e-6 Torr.

12:29  TGHT @ 40A, Vac @ 1.56e-6 Torr.

12:30  Auto heating begins,  Paramenter Setup:  TGHT: 2A/min -->  max 820A.  Incrementing if Vac < 4.5e-5 Torr; backing off if vac > 6.5e-5 Torr.

18:37  TGHT @ 772A/7.395V  (see attachment#1 for the striptool).  Auto heating will stop when the TGHT gets to 820A, and the current will stay there over night. 

March 30

11:31 TGHT has been at 820A/7.8V for the past 17 hours.  (See attachment#2 for the striptool details.)

11:34 Auto-cooling beings

19:40 Auto-cooling has finished. TGHT is at zero and p/s has turned off.  Cooling water has stopped running.  Evaporator will be vented tomorrow.

March 31, 2011

11:13:  Venting evaporator.  All pumps are off and TGHT p/s has turned off. 

Thu Mar 31 11:57:20 2011 After removing the target from the evaporator,  some white coating (could be Tantalum oxide?) was found on the copper plate of the evaporator.  The white coating was found to have more on the left end side of the target and some just below the transfer tube.  The white coating was wiped off but it showed black residual on the wipers.  The target over looks fine.  Marik was informed, and we think this white coating could be  the organic substance burnt off from the target or the Tantalum oxide from the re-used Ta heat shields. 

Tue Apr 5 10:36:53 2011:  Target oven is wrapped with 3 Ta-heat shields.  The evaporator is in the process of pumping down. 

Tue Apr 5 14:54:00 2011:  Evap has been pumped down for over 4 hours.  Vac is currently at 5.5e-6 Torr. (See Attachment#1)

Tue Apr 5 15:16:31 2011: TGHT is turned on.  Set  @ 20A/0.102V; panel reads 18A.  Vac @ 4.62e-6 Torr. 

Tue Apr 5 15:18:16 2011: TGHT set @ 40A/0.216V; panel reads 37A.  Vac @ 4.63e-6 Torr. 

Tue Apr 5 15:19:03 2011: Start Auto-heating.  Parameter setup:  TGHT rate @ 2A/min --> 820A max.  Incrementing if vac <4.5e-5 Torr, and backing off if vac >6.5e-5 Torr.

 Wed Apr 6 09:18:22 2011: TGHT was left at the auto- heating mode over night and  had been at 850A for about 12hrs; Vac @ 4.36e-6 Torr.  (see Attachment#2) 

Wed Apr 6 09:20:53 2011: Auto-cooling down has just started. 

Wed Apr 6 15:33:51 2011:  Auto-cooling completed.  (see Attachment #3 for the overall process)

Wed Apr 6 15:37:10 2011: TGHT p/s off, Venting evaporator. 

Wed Apr 6 17:06:56 2011: Target oven is wrapped with 3 Ta-heat shields.  Pumping down evaporator in progress.

Thu Apr 7 09:32:36 2011: Evaporator has been pumped down for over 16 hrs, vac @ 1.74e-6 Torr (see attachment#1).   Target heater is turned on and about to ramp up.

 Thu Apr 7 09:37:11 2011: TGHT @ 20A/0.071V, panel reads 18A.

Thu Apr 7 09:38:16 2011: TGHT @ 40A/0.147V, panel reads 37A.

Thu Apr 7 09:40:53 2011:  Auto-heating begins.  (See attachment#2 for Parameter Setup)

Fri Apr 8 10:08:07 2011:  Auto-cooling process began last night at 8:30pm.  Instructions were given to the on shift ISAC-Ops to being the auto cooling.  The process was finished this morning at around 3am.  (See attachment#3 for the cooling down process).  The evaporator p/s is off and ready to be vented.

Fri Apr 8 14:51:37 2011:  Target is wrapped with 3 Ta-heat shields.  The evaporator has been pumped down for over 4 hrs, currently vac @ 2.8e-6 Torr.  (See attachment #1, note: the drops in the IG1 reading were due to Controls group helping to fix the alarm handler notifications for the pagers.)

 Fri Apr 8 14:56:21 2011:  TGHT @ 20A/0.079V, panel reads 18V.   Vac @ 2.73e-6 Torr.

Fri Apr 8 14:57:42 2011: TGHT @ 40A/0.165V, panel reads 18A.  Vac @ 2.73e-6 Torr. 

Fri Apr 8 14:59:51 2011: Auto heating begins.  (See Attachment#2 for the parameter setup).  The target heater will read to 820A at 21:30.  ISAC Ops will help to cool down the target at around 05:00 on Saturday; instructions will be given.

Mon Apr 11 09:37:40 2011:  Target was cooling on last Saturday April 9 by the help from ISAC Ops.  (See Attachment#3 for the cooling down process).

Mon Apr 11 09:42:09 2011 :  Evaporator is vented.

Mon Apr 11 10:21:56 2011: Target is wrapped with 3 Ta-heat shields.  Evaporator is pumping down. 

Mon Apr 11 14:34:32 2011:  Evaporator has been pumped down for over 4 hours.  Vac @ 2.83e-6 Torr.  (see attachment#1 for pumping down process).

Mon Apr 11 14:38:05 2011:  Auto heating beings.  (see attchement#2 for the parameter setup)

Mon Apr 11 17:06:51 2011:  Auto heating is in process,  TGHT @ 324A/2.031V.  The target heater should reach at the max 820A at around 21:30 and will remain at that current for at least 3 to 4 hours.  ISAC Ops will help start the auto-cooling tomorrow at 03:00.

 Tue Apr 12 09:43:46 2011:  Auto cooling down process ended. TGHT stayed at 820A for about 5.5 hrs.  (see attchment# for cooling down process).

Tue Apr 12 09:59:43 2011: Pumps and p/s off, evaporator vented.

Tue Apr 12 10:29:38 2011:  Target wrapped with 3 Ta-heat shields.  Evaporator is currently being pumped down.

Tue Apr 12 15:03:55 2011:  Evaporator has been pumped down for over 4 hrs.  Set TGHT @ 20A/ 0.066V, Vac @ 2.46e-6 Torr. (See Attachment#1 pumping down process).

Tue Apr 12 15:05:11 2011: TGHT @ 40A/0.142V, VAc @ 2.46e-6 Torr. 

Tue Apr 12 15:14:16 2011  Auto heating process begins (See attachment #2 for the parameter setup).  TGHT will reach to 820A max at around 21:45 and the current will stay there for at least 4 hours.  Instructions have given to ISAC Ops to being the auto-cooling down process tomorrow at 03:00 

Wed Apr 13 10:00:13 2011:  TGHT reached to 820A max and stayed for about 5 hrs before the cooling process begun (see Attachment#2: Cooling down process). 

Wed Apr 13 10:04:19 2011: p/s is now off and evaporator is now vented. 

Wed Apr 13 10:37:25 2011:  Target is wrapped with 3 Ta-heat shields.  Evaporator is currently being pumped down.

Wed Apr 13 15:28:02 2011:  Evaporator has been pumped down for over 5 hrs.  Vac @ 2.38e-6 Torr.  (See attachment1: Pumping process)

Wed Apr 13 15:29:21 2011: Set TGHT @ 20A/0.074V, Vac 2.98e-6 Torr.

Wed Apr 13 15:30:00 2011: Set TGHT @ 40A/0.158V, Vac @ 2.30e-6 Torr. 

Wed Apr 13 15:37:42 2011:  Auto heating begins.  TGHT will increase to 820A by 2A/min.  Cooling down will take after the current has stayed at 820A for at least 4 to 5 hrs.   ISAC Ops will help to start the cooling process on April 14 at 03:00.  (See attachment#2: Parameter Setup).

Thu Apr 14 09:49:31 2011:  TGHT reached to 820A and stayed there for about 5.5 hrs.  ISAC Ops helped to start the cooling process (see attachment3: Cooling process).  The target is ready to come out from the evaporator.   P/S is off and evaporator is vented.

Mon Apr 18 12:18:55 2011:  A problem with the bolt and washer occurred during the fin diffusion bonding.  (See attachment #1 and Message ID#15 for more details) .  This target needs to be repaired.