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. 

Wednesday, August 29, 2012, 14:50

UCx#5 target description, see attachment#1

The target is currently undergoing the final conditioning in the Evaporator #1. 

 Wednesday, December 05, 2012, 15:46

This target was broken right before the end of the final run.  The target was inspected today inside the Hotcell and the pictures can be found here: http://documents.triumf.ca/docushare/dsweb/View/Collection-9357

Looks like the protective layer (TaC coating) was worn out over the course of the run time. 

We need to improve the target coating so this can be prevented in the future.

More info about this later...

 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) 

 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

Ta#38 LP-SIS target description:

Total Ta foils = 400

Foil Thickness = 0.025mm

Target density = 16.69 g/cm3

Target length = 4.1cm

Total Mass (400 foils + Ta wire) = 43.15g

Disc area = 2.12 cm2

Ta thickness = 20.354g/cm2

See link for more details:

http://documents.triumf.ca/docushare/dsweb/View/Collection-9934

Friday, October 25, 2013, 17:35

Ta#41 HP-SIS target description:

Total Ta foils = 400

Foil Thickness = 0.025mm

Target density = 16.69g/cm3

Target length = 4.0cm

Total Mass (400 foils + Ta wire) = 42.19g

Wednesday, November 27, 2013, 17:49

UCx#8 target description - see attachment#1

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

 Friday, June 06, 2014, 14:08

See attachment for the target description

 Tuesday, July 15, 2014, 9:45

Ta#42 LP-SIS target description:

Total Ta foils = 400

Foil Thickness = 0.025mm

Target density = 16.69 g/cm3

Target length = 4.9cm

Total Mass (400 foils + Ta wire) = 45.920g

Tuesday, July 15, 2014, 10:58

See attachment for target description 

 Monday, July 28, 2014, 15:52

See attachment#1 for ZrC target description. 

Target is currently undergoing the sintering process

Monday, August 18, 2014, 14:53

See attachment for target description

 Thursday, November 06, 2014, 13:29

See attachment for target description

 Wednesday, April 01, 2015, 11:25

Ta#45 HP-SIS target description:

Total Ta foils = 400

Foil Thickness = 0.025mm

Target density = 13.48 g/cm3

Target length = 3.4cm

Total Mass (400 foils + Ta wire) = 45.8181g

 Thursday, April 16, 2015, 14:07

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, June 03, 2015, 10:53

Total length packed = 12.3cm

See attachment for target description.

Laura Lambert wrote:

Wednesday, June 03, 2015, 10:53 Total length packed = 12.3cm See attachment for target description.

 Monday, July 06, 2015, 12:10

This target did not pass the test-stand and will not be used for online (unless if it gets approved).  The target container is deformed.  An increase of voltage was observed during the test; perhaps it's a sign of the container being cracked?!  See Test-stand e-log#450 for more details.  

Another target is already prepared and being tested.  (Target Oven WO# 41177-2). 

Tuesday, July 07, 2015, 12:36 

Total no. discs = 422

Total packed length = 13.2 cm (measured after the sintering process) 

Note:  The theoretical length (ZrC + graphite foils) is 10.52cm    After the sintering process, the stack of discs expanded in length.  To avoid crushing the materials while inserting the endcaps, the discs are gentally packed to 13.2cm.

(see attachments for more details)