Friday, September 02, 2016, 14:43

See attachment for target description 

 Wednesday, June 29, 2016, 11:47

See attachment for target description.

 Thursday, September 24, 2015, 11:46

See attachment for target description.

 Wednesday, April 29, 2015, 15:30

SiC#31 HP-SIS target description: 

Total SiC foils = 520 discs 

Total mass SiC + C_grv foils = 60.2441 g (before sintering, expecting ~13% loss of organic mass after burnt off) 

Average mass SiC/disc (without C_grv) = 0.0853g

Average thickness SiC (without C_grv) = 0.2093mm 

Total packed length = 17cm

See attachment #1 for the density measurement.  

Wednesday, April 30, 2014, 15:16

Note:

This target was built in 2011.  The endcaps were replaced after they got vaporized in Evap#1 during the sintering process, and the target was re-conditioned.

See elogs for more details:

https://elog.triumf.ca/TIS/Evaporator_1/20

The target was inspected and was good for online use.

Total SiC foils = 555 discs

Total length (packed) = 17.5cm

Total SiC mass (plus graphite foils) = 52.902g

See attachment for density measurements

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! 

 Tuesday, March 19, 2013, 12:28

SiC#28 - RFQ target description: 

Total SiC foils = 325 discs

Total SiC + C-grv foils = 38.48 g 

Total length = 10.9cm 

Average mass of SiC/disc (without graphite foil) = 0.083 g

Average thickness of SiC (without graphite foil) = 0.18 mm 

No Rh foil added

See attachment #1:  SiC#28 RFQ density measurements 

See link for more details:  https://documents.triumf.ca/docushare/dsweb/View/Collection-9771

 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. 

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.  

(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.

Friday, August 30, 2013, 14:38 

NiO/Ni#2                                             Average

NiO+ Ni (g)                                          0.114

NiO - Ni foil (g)                                    0.066

NiO + Ni thickness (mm)                  0.116

NiO - Ni thickness (mm)                   0.104

Area (cm2)                                           2.212

NiO + Ni - organics (8.95%) (g)       0.104

NiO - Ni - organics (8.95%) (g)        0.060

NiO Density (g/cm3)                          2.110

% Yield density                                   32%

# discs in target                                  530

Total target length (cm)                      9.0

 Nb#9 LP-SIS target description:

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

Foil Thickness = 0.025mm

Target density =  7.24 g/cm3

Target length = 3.5 cm

Total Mass = 25.343 g [Incl foils + Ta wire on 6 packs]

Total mass w/ Target oven=  425 g (w/ end caps)

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

 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) 

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

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. 

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

 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

 While removing the SiC#42 it became apparent that the multipin guide pin had become loose again and was not allowing the target to dismount from the module.

The multipin shoulder bolts were removed and then the multipin was able to be pried off.

However the NHC manipulator were not able to reach the guide pin to remove it, which would be required before the SiC#43 could be installed.

The target module was then moved to the SHC where the guide pin could be removed and the installation of SiC#43 took place, along with the transfer of the parasitic attachment onto the SiC#43.

This problem seems to suggest that the multipin could use some redesign to ensure smoother target exchanges.

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.