ITE-TM4-Ta#35-Hp-SIS

Thu Apr 7 15:32:32 2011:

Target oven - w.o#38481-3.

Packs of Ta foils were previously prepared by Vicky H.

Marik loaded the target:  400 of 0.025mm foils (25 foils/pk) in 3.5cm length.  (Recommended length 4.0-4.5cm; If too closely packed, wires get squeezed and snapped)

Average mass per discs = 0.105g

Total mass (Ta+wire) = 45.06g

Disc area = 2.12cm2

Ta thickness = 21.25g/cm2

Thu Apr 28 :

Target heat Shield (w.o 38303-4) cleaned

Target is now assembled by John and Rick

Megger Test Performed:

TA-->HS = 540V, OL

TA-->EE = 540V, OL 

HS--> EE = 1049V, OL

Leak Check OK

*SIS restraint used in this target ion source

Mon May 9 10:32:40 2011:  Standard salts added: Li, Na, Rb @ 10uL, K @ 5uL (but added 10uL), Cs @ 15uL.  Target will be going to the test stand.

Fri May 20 16:57:22 2011: 

Target was tested on the Test Stand but problems with the software (see Test stand elog). 

Standard salts added: Li, Na, Rb @ 10uL, K @ 5uL (but added 10uL), Cs @ 15uL, and Be @ 10uL.

Monday, July 18, 2011, 11:15:  Target ended on July 16.  The target was used online for an extra 2 weeks and performed very well. 

Thu Mar 31 15:19:51 2011:  SiC#25 was made sometime in December of 2010.  It is now in the target module and ready to be conditioned. 

Mon Apr 18 18:17:05 2011: It was found later that no salt was added to this target after it came out from the test stand.  However,  there were enough 40Ca and 39K  for tuning (See attachment#1 for the big mass scan).  Once the P+ is back, the yields will be measured.

Fri Apr 29 15:30:26 2011:  Low 27Al was ionized from the surface for some reason.  However, after the green laser was shone into the extraction tube, more 27Al was produced.  Then, the laser was turned off, the target continued to surface ionizing 27Al.  There could be a blockage from the rhenium (Re) ionizer foil.  Jens L. will investigate this further and do a test with the lasers and the rhenium foil.

 Fri Jun 3 12:40:30 2011

Ta#37-LP-SIS (w.o#38634-5)

Filled with 400 Ta foils (25/pk), 4.0 cm in length.  Total mass + Ta wire = 42.32g.  The heat shield was assembled and tested, and the standard salts were added.  Target was installed in the test stand on Jun 1, 2011.  

Fri Jun 17 09:19:46 2011: The following salts have been added: Li, Na, Rb @ 10uL, K @ 5uL, Cs @ 15uL, and Be @ 10uL.

Wednesday, July 06, 2011, 14:08:  TM1 is still under repairing.  It was tested at the test-stand. Target is on the shelve and ready to be used.

Tuesday, July 26, 2011, 15:58:  Salt added before going into the hotcell: Li,Na,Rb,K,Cs.  Target is ready to be used for TM1 test.

Wednesday, July 27, 2011, 10:48:  It was found that the extraction electrode had some arc marking on it (see attachment: EE).  Investigating... 

Wednesday, July 27, 2011, 12:51: After further investigation on the extraction electrode,  we found some black and blue(or green) deposit on the outside surface and inside of the EE.  This deposit is most likely copper oxide, which formed during the HV test.  The EE was removed, and wiped clean with methanol.  (see attachment: EE_CuO).  This target will be used in TM1. 

Friday, August 26, 2011, 09:48:  As per Friday Aug 26 TIS meeting, bNMR is very satisfied with the beam; the count rate is very stable.

 Thu Jun 16 17:21:10 2011

Two targets of Nb-HP-SIS are complete and ready to be installed in the heat shields:

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Target oven w.o# 38817-1:

inner diameter: left = 18.27mm, right = 18.25mm.

Filled with 400 foils Nb (16pk, 5 foils/pk).  

Discs spec: 18.65mm/14.65mm, thickness = 0.022mm  

Total mass + Ta-wire = 22.74g

Total length = 4.5cm

Rn foil inserted for ionization.  (0.1mm, 0.004", 1cm x 1cm)  

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Wednesday, July 06, 2011, 14:35: Salts were added and tested in test-stand last 2 weeks.

Details about Ta Hp surface, w.o#38295-4 (spare):

This target was built as a spare.

Note: Left side target arm replaced, Nov 18, 2010.  Weld prep on centre block misaligned.  (Marik has more details about this).

Packs of Ta foils were prepared by JW. 

Target was filled with 400 of 0.025mm foils (25 foils/pk) in 4.0cm length. 

Total Mass of 16 packs of Ta foils + Ta wires = 42.70g.  

See attachment#1 for the measurement.

Friday, April 19, 2013, 09:44 

Target was tested at the Teststand.  Result Good. 

Ready for use.

Ta-LP-SIS (w.o#38634-2)

Target consists of 400 Ta foils, 4.4 cm in length.  Total mass + Ta wire = 40.87g.

Thursday, July 07, 2011, 15:43:  Begin target assembly. 

Friday, July 08, 2011, 14:24: assembly completed.  Std stds added for test-stand: Li, Na, Rb, K, Cs.

Friday, July 15, 2011, 09:09:  Target currently in test-stand.  Will come out on Monday next week.  Need to add std salts + Be. 

Monday, July 18, 2011, 10:58:  Target removed from test-stand.  Std salts added (Li, Na, Rb, K, Cs) & Be (as requested by Jens).  Maico D.V will do a final inspection on the target before it goes into the hotcell

UCx#2 Spec:

Target wrapped with 3 Ta-heat shields

Target length = 11.2cm

Total UC2/C foils = 245 discs

Total U/cm2 = 15.27g

Standard salts = 10uL Na, 10uL Li

Tuesday, August 09, 2011, 14:27: 

Target came out from the glovebox and transported to the cold lab for assembly.  During the assembly, one of the screw-heads for the heat-shield broke (see attachment#1: broken_screwhead). 

The target was leak checked and fine. 

Target is going back to the glovebox to be kept under Ar until RH is ready (see attachment #2: UCx#2).

 Tuesday, October 04, 2011, 10:21

UCx#2 run was finished last week.  

Target was moved from ITW to south hot cell, and stored in a bucket under argon feed. 

Tuesday, September 06, 2011, 13:14: 

Average mass = 0.206g

Average Thickness = 0.0189 cm

Area of D-shaped disc = 2.21 cm2

D-shape discs diameter = 18.5mm (14.5mm cut-out length)

Oven ID, L= 18.22mm, R = 18.20mm 

Density = 4.9266 g/cm3

% Yield Density = 47.20%

Attachment#1 - TaC density measurements.

 Loaded target with 125 discs --> 9.6g Ta/cm2

Total discs mass = 30.41g

Total length = 4.5 cm

 Thursday, September 15, 2011, 10:45

Na & Li were added.

Re foil inserted.

No Ta-heat shields required.

Friday, September 30, 2011, 14:10

After the test-stand, 10uL of Na and Li were added yesterday.   

Target is now ready, and will be moved into the hotcell next week. 

Wednesday, November 16, 2011, 15:51 

After the target was finished and transferred into the hotcell, it was found that the target broke apart from the center block.  This might have happened during the end of the target cooldown. See link for more details: 

http://documents.triumf.ca/docushare/dsweb/View/Collection-7438

Friday, September 23, 2011, 16:54:

• Cu-gaskets used for leak checking target had a leak rate of about  10^-8  10^-9 atm cc/sec. Replaced with silver plated SS gaskets and no leak detected above 10^-11 atm cc/sec.
• The target can not hold high voltage when it is sitting on the jig. The insulator on the jig have reduced resistance over time (less than 1 G Ohm). All high voltage tests passed when target is tested not sitting on the jig.

• Target is now in the test stand and pumping down.

Anders Mjos wrote:

Friday, September 23, 2011, 16:54: Cu-gaskets used for leak checking target had a leak rate of about  10-8  10-9 atm cc/sec. Replaced with silver plated SS gaskets and no leak detected above 10-11 atm cc/sec. The target can not hold high voltage when it is sitting on the jig. The insulator on the jig have reduced resistance over time (less than 1 G Ohm). All high voltage tests passed when target is tested not sitting on the jig.   Target is now in the test stand and pumping down.

 Monday, October 17, 2011, 14:41

After the test-stand, the extraction electrode showed some electric arcing mark, but no solid deposits were found.  (see attachment#1: EE_after_teststand.jpg)

See attachment for the target specification.  

 Wednesday, November 16, 2011, 13:51

UCx#3 descriptions: 

Target oven wrapped with 3-Ta heat shields, including the back block (see attachment#1)

Total UCx/C discs = 365

Total disc length = 12.9cm 

UC2/C (365 foils) = 44.76 g

UC2/C (365 foils) - organics = 39.24g

U (365 foils) = 34.05g

U (365 foils) thickness = 16.03 g  

Salts added:  Na, Li, K, Rb, & Ce. 

Monday, February 13, 2012, 16:00 

Nb#5 target description:

Total Nb foils = 400

Total Mass (400 foils + Ta wire) = 24.52g

Total Length = 4.0cm

Target thickness = 11.57 g/cm2

Target Density = 8.57g/cm3

Inserted Rh foil (1cmx1cm)

Added standard salts before test-stand:

15ml Cs

10ml Li, Na, Rb  

5ml K 

Monday, April 23, 2012, 08:58

Target was tested in the test stand, see https://elog.triumf.ca/TIS/Test-Stand/77 for more details.

No salts were added after the test.  The target is now in the conditioning station. 

 Monday, February 20, 2012, 16:25

Mass of empty target oven used = 461.55g

Target oven filled with 402 discs of UO2/Nb, 5.0cm in length, and tot mass (before sintered) was 61.49g (UO2+Nb+org). 

Target finished the sintering process on Feb 20, 2011.  

U(402 foils) mass = 35.689g

U(402 foils) thickness = 16.834 g/cm2

Target is stored in the Hotlab and ready for assembly. 

 Thursday, May 24, 2012, 10:34

SiC#27- HPSIS target description: 

Total SiC foils = 240 discs

Total SiC+ C-grv = 27.79g

Total length = 8.3cm 

Average mass of SiC/disc (without C-grv) = 0.085g 

Average thickness of SiC (without C-grv) = 0.24mm  

No Rh foil added

Salt added = 10uL Li, 10uL Na 

see attachment#1: SiC#27_density measurements

see link for more details: http://documents.triumf.ca/docushare/dsweb/View/Collection-8530

Ta#38 LP-SIS target description:

Total Ta foils = 400

Foil thickness = 0.025mm

Target density = 16.69 g/cm3

Target area = 2.12cm2

Target length = 4.3cm

Total Mass (400 foils + Ta wire) = 42.8013g

See the link for more details: http://documents.triumf.ca/docushare/dsweb/View/Collection-8541

Friday, June 01, 2012, 11:36

The target is now in the test-stand, and by next week Tuesday, it should go in the Hotcell.

 Monday, June 04, 2012, 16:56

The target was tested in the Test-stand.  The EE was inspected and a small amount of deposit was discovered after the test (the same stuff was found on Ta#36),  see attachment #1.  The samples were collected and will be analyzed through SEM/EDX/XRD.

The EE and the common plate were cleaned with methanol and were assembled back.

The target is ready to go in the Hotcell tomorrow, June 05.

 Monday, November 05, 2012, 16:42

The deposits on the EE and CC were analyzed using XRD

On the EE, it was mainly copper hydroxide nitrate, Cu2(OH)3(NO3). (see attachment #2)

On the CE, it was mainly tantalum, Ta. (see attachment #3)

John Wong wrote:

Monday, February 13, 2012, 16:00  Nb#5 target description: Total Nb foils = 400 Total Mass (400 foils + Ta wire) = 24.52g Total Length = 4.0cm Target thickness = 11.57 g/cm2 Target Density = 8.57g/cm3 Inserted Rh foil (1cmx1cm) Added standard salts before test-stand: 15ml Cs 10ml Li, Na, Rb   5ml K  Monday, April 23, 2012, 08:58 Target was tested in the test stand, see https://elog.triumf.ca/TIS/Test-Stand/77 for more details. No salts were added after the test.  The target is now in the conditioning station.

 Monday, June 11, 2012, 13:42

The Nb#5 run was good.  The target is now in the storage. 

see https://elog.triumf.ca/TIS/RH-ISAC/124

John Wong wrote:

Monday, February 20, 2012, 16:25 Mass of empty target oven used = 461.55g Target oven filled with 402 discs of UO2/Nb, 5.0cm in length, and tot mass (before sintered) was 61.49g (UO2+Nb+org).  Target finished the sintering process on Feb 20, 2011.   U(402 foils) mass = 35.689g U(402 foils) thickness = 16.834 g/cm2 Target is stored in the Hotlab and ready for assembly.

Target assembled with new anode end cap.

See attachment for gap size and DocuShare for further information.

Friday, July 20, 2012, 11:35

UCx#4 target description, see attachment#1

The target is assembled and stored in the Ar-glove box.  It will be transported to the South Hotcell on July 31, 2012.

 Wednesday, September 12, 2012, 02:10

Nb#7 target description: 

Total Nb foils = 400 discs

Total Nb mass (Nb foils + Ta wires) = 26.529g 

Total length (after filled) = 4.6cm 

(see attachment #1) 

(Should have posted this before my long vacation... Anyway, it's for documentation)

Thursday, October 11, 2012, 11:38

Target contains 500 NiO/Ni discs and is measured at 9.0 in length.