Thursday, February 13, 2014

Labview 2103 August upgrade


  • Upgraded PXIe Labview from 2012 f3 to 2013 f2
  • Use 2013 DS-2 developer suite distribution, August 2013 release
    • 3 DVDs for LV/CVI etc
    • 1 DVD device drivers
    • 1 DVD additional FPGA/xilink tools
    • 2+ hours to run
    • share DVD from Matrix-Auger to Auger-pxi
  • After upgrade somehow initial daqmx diver install not completed, so projects with analog io were broken
    • download and install DAQmx 9.8
    • now analog works but cRIO still broken, missing "software or license"
    • another hour...
  • Download NIRIO130 driver and install
    • now cRIO recognized, but software conflict
    • use NI MAX remote system/software/Add remove to replace LV 12 environment with LV 13
    • now VIs resident on cRIO work, but error from FPGA
    • another hour+...
  • NI MAX never recognized PXIe 4132 SMU
    • needs separate driver, NIDCPWR190
    • another GB download and install, almost an hour...
    • now SMUs are recognized
  • Rebuild FPGA
    • go to cRIO/chassis/FPGA target
    • rebuild FPGA counter to DAC using existing build spec
    • 40 minutes elapsed, no errors
    • RT_Omicron.vi still fails, error on FPGA Target RIO0
    • Unplug cRIO, try again, now it works, for some reason new bitfiles not downloaded
    • communication now OK, Omicron FPGA interface 2.lvproj now works
Now all projects in PXIe Documents/Programs  LV seem to work with 2013. "LV 2012 backups" folder has old versions

Wednesday, February 12, 2014

SC NbSn wire experiments

Ed build wire cleaving holder, 3 perpendicular wires in clamp.
scribe wire outer diameter by rolling wire on surface with scalpel.
insert wires to scribe mark.
cleave with syringe needle that fits OD

Cleaved in air this time, ~ 1 min exposure before pumpdown.

Wires are Cu clad bundle of 50 um subelements, each should be Cu.96Sn0.04 bronze, with Nb3Sn phase polycyrstalline, ~ 1.5 at. % Ti doped, expect Ti at grain boundaries, also Cu.  intergranular fracture

No problem with Auger, although Ti hard to find. Small Ti 383 peak found but no 418. First peak is L2,3M2,3M2,3, next is L2,3M2,3M4,5 which involves valence levels. See Maline SS 286 p82 1993 for interpretation of Ti Auger.