 Wednesday, August 01, 2012, 09:37, Pierre Bricault, ITE-TM4-UO#3, LP-FEBIAD, ITE, TM4, , , Problems/Solutions, Short has developed while lowering the cathode heater
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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, 14:52, John Wong, UCx#5, LP-SIS, ITW, TM4, 39165-5, , Failed, UCx#5 target description 
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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...
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Wednesday, September 12, 2012, 01:53, John Wong, Nb#7, LP-SIS, , , 39165-6, , Spent, Nb#7 target description
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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) |
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Tuesday, March 19, 2013, 13:32, John Wong, SiC#28-RFQ, LP-SIS, , TM4, LP-RFQ (NEW), , Spent, SiC#28-RFQ target description
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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
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Thursday, April 11, 2013, 14:30, John Wong, Ta#39, LP-SIS, ITW, TM1, 39165-7, , Spent, Ta#39 target description
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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
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Friday, October 25, 2013, 17:35, John Wong, Ta#41, HP-SIS, ITW, TM4, 38817-10, , Spent, Ta#41 target description
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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
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Wednesday, November 27, 2013, 17:56, John Wong, UCx#8, LP-IG-LIS, ITE, TM4, 39814-IV, , Spent, UCx#8 target description
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Wednesday, November 27, 2013, 17:49
UCx#8 target description - see attachment#1
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Wednesday, April 30, 2014, 16:36, John Wong, SiC#30, HP-FEBIAD, ITE, TM3, 38481-8, , Spent, SiC#30 Target description
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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
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Friday, June 06, 2014, 14:09, John Wong, UCx#9, LP-SIS, , , 39165-9, , Ready, UCx#9 - Target description
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Friday, June 06, 2014, 14:08
See attachment for the target description
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Tuesday, July 15, 2014, 10:54, Laura Lambert, Ta # 43, LP-SIS, ITW, TM1, 40282-2, , Ready, Ta # 43 Target Description
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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
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Tuesday, July 15, 2014, 11:01, Laura Lambert, UCx # 10, LP-SIS, ITE, TM4, 39165-10, , Ready, UCx#10 Target Description
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Tuesday, July 15, 2014, 10:58
See attachment for target description |
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Monday, July 28, 2014, 15:57, John Wong, ZrC#6, LP-SIS, ITW, TM1, 40282-3, , Spent, ZrC target description
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Monday, July 28, 2014, 15:52
See attachment#1 for ZrC target description.
Target is currently undergoing the sintering process
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Monday, August 18, 2014, 14:39, Laura Lambert, ThO2 #1, LP-SIS, , , , , , ThO2 #1 Target Description
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Monday, August 18, 2014, 14:53
See attachment for target description
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Thursday, November 06, 2014, 13:35, Laura Lambert, UCx # 11, LP-SIS, ITE, TM4, 40282-5, , Ready, UCx#11 Target Description
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Thursday, November 06, 2014, 13:29
See attachment for target description
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Wednesday, April 01, 2015, 11:27, Laura Lambert, Ta # 45, HP-SIS, , , 38817-5, , In Use, Ta#45 target description
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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
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Friday, April 17, 2015, 16:00, Laura Lambert, UCx # 12, LP-SIS, ITW, TM1, 41177-2, , Ready, UCx#12 Target Description
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Thursday, April 16, 2015, 14:07
See attachment for target description |
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Wednesday, April 29, 2015, 15:39, Laura Lambert, SiC#31, HP-SIS, , , 38817-7, , Ready, SiC#31 Target description
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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.
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Wednesday, June 03, 2015, 10:55, Laura Lambert, ZrC#7, LP-SIS, ITW, TM2, 41177-1, , Ready, ZrC#7 target description
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Wednesday, June 03, 2015, 10:53
Total length packed = 12.3cm
See attachment for target description.
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 Monday, July 06, 2015, 12:18, John Wong, ZrC#7, LP-SIS, ITW, TM2, 41177-1, , Failed, ZrC#7 target description
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| Laura Lambert wrote: |
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Wednesday, June 03, 2015, 10:53
Total length packed = 12.3cm
See attachment for target description.
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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).
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Tuesday, July 07, 2015, 13:00, John Wong, ZrC#7, LP-SIS, ITW, TM2, 41177-2, , Ready, ZrC#7 (backup1) target description
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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)
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