[dsg-hdice] Status

[Amanda Hoebel]

Dear Dr. Sandorfi,

Thank you for your email. With regards to the 3 items discussed in the meeting (functionality of Rack 2, pump cart diagram, and synchronization of the lock-in amplifier data), we are awaiting the detailed list for the work to be done. 

The following have been completed for Rack 2 functionality:
   1. Updated FRS and NMR programs to LabVIEW 2015.
   2. Added CT-box to NMR program.
   3. Replaced old cables with new low-noise cables.
   4. Incorporated LCD screen on RF Attenuation box.
   5. Modified NMR program to run scans with positive and negative current.
   6. Added Tbottom and Twait times to NMR program.
   7. Made Tup and Tdown independent of each other (for 10 s – 300 s).
We need to know what else needs to be focused on in order to make Rack 2 completely functional. 

The power-portion of the pump-cart wiring diagram has been completed. The signal-portion of the diagram has not been completed. We believe that the diagram you provided us is more of a block diagram than a wiring diagram; however, we have removed the locks, replaced the UPS batteries, and reconnected the power cords to the pump cart. We’ve requested Mike Lowry to check the connections. 

For the synchronization of the lock-in amplifier, details are needed for the trigger and acquisition rate. We need the limits for all parameters (maximum and minimum times needed for Tdown, Tbottom, Tup, and Twait), as the program can only acquire data at a fixed rate calculated by the total time requested and buffer depth of the lock-in amplifier. 

Further, we believe the NMR program should be thoroughly tested before the synchronization program can begin, to establish a baseline for how the program should function. At present, we estimate that the synchronization program should take us about 4 months, if we are provided with the necessary tools. 

Please provide us with this information and we will work to have these items completed.

Regards,
Amanda