kHz, DF, SS, WFP, NJ, PG, FW

• Windows 10 Upgrade TBD soon!
  • Buy 4 SSDs (Xabbu3, MgControl, Wavemeter, Reslab)
  • Install Win10 + “Only programs you need” freshly on new SSD
    • Disconnect old SSDs (keep as backup)
    • Disconnect (Data) HDDs
      • Will this cause the RAID to die?
      • Will RAID work after that by just re-pluggin the drives?
      • Make backups and/or check, if automatic backups are present and in the latest state
• Journal Club
  • NJ will not volounteer for the next one → Next in line would be SS (least amount of JCs: 2)
• Holidays

• Got OK for Comb repair + New PCF
  • TBD: Wirtschaftlichkeitsuntersuchung
• Maser: Ionpump problems → Move to PTB over XMas
  • HITec caddy possible → kHz will ask Tobias for Monday/Tuesday ([2019-12-16 Mo]/[2019-12-17 Di])
• 10 MHz: Warmup behaviour investigation this week
• R1: Lock showed 50 Hz/ 100 Hz oscillations two weeks ago → Rf amplifier or PSU? → Problem now gone.
• R2
  • We see modes now!
  • Needs a PDH to work on for a few weeks to make it finally working again after all those years…
    • SS to skip PTB work for a few weeks to invest full-time on R2?
    • Ask EMR next week, if SS shall do it or not
• H-Beast
  • Changed experimental place (Because of SS's leg)
  • Chamber closed (not yet pumped) to mitigate acustics via air
  • Remeasure vibration sensitivity

• Systematics

* SWAP during broken-comb time (within DP)

• Mostly seen heating…
• Reason due to restricted velocitiy classes in the DP?
• New student (Nishad, opt. technology) going to work on that
  • Exp. and Theory

• Mode matching improved
• Temp. of laser housing was bad (was PID-Peltier, now Thorlabs). Still oscillations seen, which cause modejumps
• Polarization changes infront of transfer cavity seen.
  • Definitely not infront of first fiber
  • Check, if its directly after the first/second/third fiber