 Tuesday, February 25, 2014, 16:10, Laura Lambert, , 40282-3, TARGET BOAT, Done, Sintering TaC coated end caps 
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Tuesday, February 25, 2014, 16:08
The target containers end-caps were coated with TaC spray and let dry.
The caps are inserted in the target boat vertically with no heat shield and no graphite foil. |
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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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Friday, March 07, 2014, 11:46, Laura Lambert, , 40282-3, TARGET BOAT, In progress, Sintering TaC coated end caps
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Friday, March 07, 2014, 11:41
The target container end-caps were sintered previously, but did not fully complete the sintering process [See elog entry # 119 EVAP2]
The caps are inserted in the target boat wrapped in graphite foils with 3 x Ta-heat shields. |
 Friday, March 07, 2014, 22:25, John Wong, , 40282-3, TARGET BOAT, Problems, Sintering TaC coated end caps
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Laura Lambert wrote:
Friday, March 07, 2014, 11:41 |
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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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Monday, July 28, 2014, 15:06, Laura Lambert, , 40282-3, LP-SIS, In progress, Sintering ZrC# 6 target
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Monday, July 28, 2014, 14:41
Total number of foils: 445 discs
Total mass of materials [incl graphite foils]: 49.027 g |
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Tuesday, July 29, 2014, 11:23, John Wong, , 40282-3, LP-SIS, In progress, Sintering ZrC# 6 target
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Laura Lambert wrote:
Monday, July 28, 2014, 14:41 |
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Friday, August 01, 2014, 11:47, Peter Kunz , , 40282-3, LP-SIS, In progress, ZrC #6 conditioning
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The maximum current of 580A was reached at 9:15.
TGHT:RDCUR 578 A
TGHT:RDVOL 9.87 V |
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Friday, August 01, 2014, 13:27, Peter Kunz , , 40282-3, LP-SIS, In progress, ZrC #6 conditioning
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Target was conditioned for 4 hours at 580A.
Initiating ramp-down sequence @ 2A/min
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Tuesday, August 05, 2014, 12:01, Laura Lambert, , 40282-3, LP-SIS, Done, ZrC #6 conditioning
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Peter Kunz wrote:
Target was conditioned for 4 hours at 580A. |
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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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