Tuesday, September 26, 2017, 09:31

Ta#54 HP-SIS target description:

Total Ta foils = 470 [6x20 packs + 350 single discs]

Foil Thickness = 0.025mm

Target density = 14.72 g/cm3

Target length = 3.4cm

Total Mass = 50.0372g [Incl foils + Ta wire on 6 packs]

 Tuesday, September 29, 2020, 11:49

See attached picture for description 

Monday, August 16, 2021, 11:01

See attachments for the target description and SEM images

 Nb#10 LP-IG-LIS target description:

Total Ta foils = 470 [6x20 packs + 350 single discs]

Foil Thickness = 0.025mm (0.001")

Target density =  7.36 g/cm3

Target length = 3.5 cm

Total Mass = 25.7576 g [Incl foils + Ta wire on 6 packs]

Total mass w/ Target oven=  438 g (w/ end caps)

Discs in target are arranged as follows: 1pack / 75 singles / 1pack / 100 singles / 2packs / 100 singles / 1pack / 75 singles / 1pack

Dimpling direction on foils/ Packs.                                                               --> Center <--

End caps installed (Not expanded). No Ta foil heat shield added

Nb#11 LP-IG-LIS target description:

Total Ta foils = 470 [6x20 packs + 350 single discs]

Foil Thickness = 0.025mm (0.001")

Target density =  7.13 g/cm3

Target length = 3.53 cm

Total Mass = 25.165 g [Incl foils + Ta wire on 6 packs]

Total mass w/ Target oven=  434 g (w/ end caps)

Discs in target are arranged as follows: 1pack / 75 singles / 1pack / 100 singles / 2packs / 100 singles / 1pack / 75 singles / 1pack

Dimpling direction on foils/ Packs.                                                               --> Center <--

End caps installed (Not expanded). No Ta foil heat shield added

Replacement for Nb#10

Ta#66 LP-SIS target description: 

Total Ta foils = 470 [6x20 packs + 350 single discs]

Foil Thickness = 0.033mm (0.0013") avg Measured. 

Target material batch: Ta 2023-1  Mt'l PO# TR-2022-03028

Target density = 12.446 g/cm3

Target length = 5.0 cm

Total Mass = 62.230 g [Incl foils + Ta wire on 6 packs]

Total mass w/ Target oven=  g (w/ end caps)

Discs in target are arranged as follows: 1pack / 75 singles / 1pack / 100 singles / 2packs / 100 singles / 1pack / 75 singles / 1pack

Dimpling direction on foils/ Packs.                                                               --> Center <--

End caps installed (Not expanded). No Ta foil heat shield added

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.

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

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.

John Wong wrote:

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.

Tuesday, September 27, 2011, 10:29

 After the test stand, deposited material was found on the Extraction Electrode. A sample of the material was taken for later analysis. The electrode was cleaned with methanol. See attachment for photos.

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.  

 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

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.

 On tuesday July we lower the cathode heater to swap the anode-cathode bias. While lowering the cathode heater a short on the anode developed. 

The polarity swap was not possible because the target/tube assembly has also a short to common. 

We return the configuration has it was and we added two 100 Ohms: 5 W resistor between the common and the heaters to prevent current to flow back to the common. 

The anode short disappear during the cathode and target heating. 

(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.

Wednesday, July 10, 2013, 18:32 

SiC#29 HP-FEBIAD-CTL target description: 

Total SiC foils = 510 discs 

Total mass SiC + C_grv foils = 62 g (before sintering, expecting ~13% loss of organic mass after burnt off) 

Average mass SiC/disc (without C_grv) = 0.0892 g

Average thickness SiC (without C_grv) = 0.21mm 

No Rh foil and salt added for this run. 

See attachment #1 for the density measurement.  

 Wednesday, July 10, 2013, 18:40

Target is currently in the Test-Stand.  Once it's tested; it is ready to go online.  

Happy Beaming! 

Wednesday, November 27, 2013, 17:49

UCx#8 target description - see attachment#1