 Monday, November 04, 2013, 14:02, Anders Mjos, , , , Maintenance, Backing pump replaced
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Anders Mjos wrote:
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 Thursday, November 07, 2013, 09:38, Anders Mjos, , , , Problems resolved, Heat Shield cooling line twisted 
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See attached photo.
The Heat Shield has been taken to the Machine Shop for repair.
Friday, November 08, 2013 |
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Friday, March 07, 2014, 10:34, Anders Mjos, , , , Problems resolved, TGHT2 water flow signal
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There was no signal going from the coils to the PLC. After manipulating the connection points on the coil a signal could again be established. Frequency
is ~ 40Hz. |
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Monday, March 10, 2014, 11:45, John Wong, , , , Maintenance, Replaced Backing Pump hose
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Monday, March 10, 2014, 11:44
Rick replaced the backing pump hose from 1.5" to 2.0" for better flow. And the HEPA filter was checked - it looks OK.
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Monday, March 10, 2014, 11:52, John Wong, , , , Problems resolved, The Chiller is down
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Monday, March 10, 2014, 11:45
The chiller tripped off on March 7, 2014.
Water is not flowing into the chiller; paddle wheel shows no signal.
Tried turning on the chiller locally; a few seconds |
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Thursday, March 27, 2014, 18:04, John Wong, , , TARGET BOAT, In progress, Studying WC sintering on Ta surface
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Thursday, March 27, 2014, 17:38
TEST #1
WC slurry was prepared in non-aqueous environment (see lab book for procedures). The solution was dripped on two Ta plates (3.1cm2) and let |
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Thursday, April 24, 2014, 18:13, John Wong, , , TARGET BOAT, Done, Tests: Sintering carbon Mesh coated with WC
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Thursday, April 24, 2014, 17:25
The purpose of this experiment is to see if the carbon mesh is suitable for coating and sintering with uranium carbide. For this test, the
mesh is coated with WC slurry (previously prepared). |
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Thursday, May 29, 2014, 18:16, Cameron Hodgins, , , TARGET BOAT, In progress, Sintering several carbides on tantalum foil backing
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Purpose: Sinter one sample of each of TiC, VC, Cr3C2, ZrC, NbC, Mo2C, TaC, and WC on 5x10 mm tantalum foil to see if the samples are usable for SEM.
Samples were prepared using a solution of PEG (2.56 g), PVB (2.45 g), paraffin oil (1.12 g), MEK (15 mL), and EtOH (23 mL). Slurries made using
0.0013 mol of each carbide with ~230 uL of the solution. Applied via paintbrush onto 5x10 mm tantalum foil. |
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Friday, May 30, 2014, 13:15, Cameron Hodgins, , , , In progress, Sintering several carbides on tantalum foil backing
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Pressure down to 7.1e-7 Torr. Water valve to heat shield was opened; pressure remained stable.
Current turned up to 40 A for now. Will increase at 2 A/min up to 500 A over the weekend, then on Monday we will turn it up to 600 A and
check the temperature. |
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Friday, June 06, 2014, 16:01, Cameron Hodgins, , , TARGET BOAT, In progress, Sintering several carbides on tantalum foil backing
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Auto-ramp started. Max current = 500 A, voltage = 11.05 V. Current is being increased at 2 A/min. In the first 20 minutes, the pressure went up to about
10E-6 T, but has slowly decreased since then. Everything looks ok. The system will be left until Monday morning (June 9th). |
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Monday, June 09, 2014, 13:56, Cameron Hodgins, , , TARGET BOAT, In progress, Sintering several carbides on tantalum foil backing
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Manually changed current from 500 to 615 A, monitoring the temperature. Temperature went from 1657 C up to 1838 C. Pressure increased up to 7.2e-7 T.
Samples should be left for about 4 hours (615 A started just before 13:00), then the goal is to ramp current back to zero. |
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Monday, June 09, 2014, 17:15, Cameron Hodgins, , , TARGET BOAT, In progress, Sintering several carbides on tantalum foil backing
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| Target boat is now being cooled at 1 A/min from the starting point (616 A) down to 0 A. |
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Tuesday, August 05, 2014, 13:13, Laura Lambert, Empty, , TARGET BOAT, In progress, Sintering TaC coated end caps
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Tuesday, August 05, 2014, 12:02
The target container end caps were coated with TaC spray and let dry.
The caps are inserted in the target boat vertically, wrapped in graphite foil with 3 x Ta-heat shield. [see attached photo] |
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Tuesday, August 05, 2014, 17:20, John Wong, , , TARGET BOAT, In progress, Sintering TaC coated end caps
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Laura Lambert wrote:
Tuesday, August 05, 2014, 12:02 |
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Thursday, August 07, 2014, 10:13, Laura Lambert, , , TARGET BOAT, Failed, Sintering TaC coated end caps
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John Wong wrote:
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Thursday, October 02, 2014, 11:26, John Wong, Empty, , , Maintenance, Broken insulators
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Thursday, October 02, 2014, 11:22
It was found that after the last process, Evap#2 has broken insulators - the cylinder insulator that supports the target centre legs and the block
insulator that supports the terminals. |
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Friday, October 03, 2014, 13:02, Anders Mjos, Empty, , , Maintenance, Broken insulators
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John Wong wrote:
Thursday, October 02, 2014, 11:22 |
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Thursday, October 09, 2014, 15:59, John Wong, Nb, , TARGET BOAT, In progress, Conditioning Nb target (for Bob)
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Thursday, October 09, 2014, 15:56
The target boat contains 5 samples of Nb discs. Each disc is wrapped with Nb foil and labelled.
Samples will be heated up to 1400C for 4 hours. |
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Thursday, October 09, 2014, 17:41, John Wong, Nb, , TARGET BOAT, Done, Conditioning Nb targets (for Bob)
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Thursday, October 09, 2014, 17:36
Target boat consists of 5 Nb discs. Each disc is wrapped with Nb foil, and to be heated to 1400C for 4 hours.
Chamber has been pumped down to 6.5e-7 Torr. HS valves open - no leaks detected. |
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Tuesday, November 04, 2014, 16:20, John Wong, SiC, , TARGET BOAT, In progress, TEST: Fabrication of SiC & Determine phase transformation 3C vs 6H
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Tuesday, November 04, 2014, 16:08
The purpose of this experiment is to improve the fabrication of SiC. Previously, the SiC target was heated to 2000c and yellow crystals were
observed. |
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