NPS Crystal Test Meetings

Participants: MAPC, SA, TH, MB, ILP

Measurement of Transmittance using Spectrometer Lambda 750

Transverse Transmittance (stepper motor)

• Testing Subset of Crystals
• Micro-switch to be bypassed for operation with opened door?
  • Can anything be damaged if someone opens the machine while operating it?
  • Would any accidental light leak be detrimental to the experiment?

    • See Perkin-Elmer L750 manual
    • Contact company to find out more info (MAPC, Marek)

• Conceptual Test for the stepper motor inside the spectrometer
  • Next week: (11/2 – 11/6) - Test with a black cloth.

Longitudinal Transmittance

• Testing Subset of Crystals
• What is the purpose of the windows? Should we remove them?

X-ray Irradiation

• Check with CUA radiation safety before testing machine. (TH, Miguel P., ILP)
• Can we move instrument downstairs?
• Clean room in which instrument is located
• Consult CP160 manual (Miguel P., NP group)
• Check radiation requirements
• Think about measurement of accumulated dose. Is there something in the instrument?
  • Search for options of dosimeters (CUA/JLab/internet).
  • Check out instrument
  • Calibration scheduling (TH, ILP, Miguel P.).

Additional Points

• Talk with Miguel to inform him of everyone that is working with the spectrometer.
• Build a dark box as a more permanent solution for crystal measurements. (2016, when we have more crystals, NPS group)

To Be Discussed

• NPS frame construction startup (once design drawings ready, est. early 2016)
• NPS magnet construction startup (once design drawings ready, est. early 2016)