Online: Karl, Shaul, Maurizio, Jacques, Kris

  * Maurizio: update on gain stability
      * Toast Bug: Ted Kisner had identified the bug, says it is easy to fix. Promised a fix by the morning of April 12. 
      * Maurizio will meet with Andrea Zonca tomorrow (April 12) to discuss the PICO simulation  
  * Jacques discusses {{:systematicswg:telecons:2018-04-11:sidelobes20180411.pdf|sidelobe pickup calculations for PICO}}
      * Galactic pick up had been observed with Planck at the highest frequencies with HFI and at the lowest frequencies with LFI. 
      * Maurizio says that the LFI dipole had been convolved with expected sidelobes from the GRASP model. Jacques is not sure about the HFI case. 
      * There is some discussion about the relative comparison of the expected sidelobe pickup for Planck and PICO by the galaxy. This will likely go into the report. 
      * There is also some discussion about whether PICO should have an extra black baffling around the primary to limit the spill-over around the primary. 
      * The Planck references are the Tauber etal 2010 optics paper, and the Planck 2013 calibration paper.