10 July 2023:

From Janos (28 June 2023:

I wonder if you understand better what controls we will need to support High Explosive chamber. For now, I estimated like 4 motion axis, 4 gige cameras and 4 diodes (wave8). 
What do you think about these estimates and what device should I add or remove?

20 June 2023:

Peregrine: So, given the official deferral of experimental diagnostics, are the discussions recorded at https://confluence.slac.stanford.edu/display/LCLSPW/1.03.04+Target+area+diagnostics (and especially https://confluence.slac.stanford.edu/display/LCLSPW/Experimental+Configuration+Diagnostic+Table) moot? Or will this information still be useful for post First Light planning?

Gilliss: They are not moot. They set the framework. We are still designing a system that will support them without overhauling the facility itself.  Also the deferrals were always meant to be post-PDR.

From Gilliss Dyer (19 June 2023):

In a strict on-project sense, all experimental diagnostics are deferred per  ROD-016.

The project had previously considered two “first light” experimental diagnostics, the Thomson parabola and the VISAR. Assuming no additional funding outside the project, we would probably additionally have planned to use some subset of our existing diagnostics. Now everything’s in the same boat with respect to the project actually delivering them.

That said, experimental diagnostics aren’t the whole story – there will be laser beamline diagnostics including the cameras to determine the alignment and focal spot quality of the laser, as well as energy meters for the lasers. Many of these will still be on-project as I understand it, but they didn’t fall under experimental systems or the science case directly.

The downstream high explosives chamber will want some kind of diffraction and imaging. It is just a space claim and hasn’t been described in any detail. There may be a run 22 experiment that gives us some insight into what it’s like to run such an experiment…

From MEC-U Science Team Meeting (16 June 2023):

On the MEC-U Experiment Controls side we would like to start a discussion about planned (and future scope) SLIM payloads.  Here are a few starting points to consider:

-We do have diagnostic requirements to some level in Jama. We can add to these.

  • Detector specifications including type, data size, and physical interfaces (data/control, power, cooling, etc).
    • WAXS: One per slim of a new version of the ePix10k full format (4 slims total)
    • WAXS future: one per SLIM of same format but Icarus. Power / cooling - try to get Philip's input?
    • epix100 type detectors 
    • Streak cameras, possibly external to a SLIM, 
  • Need for multiple detectors in a given SLIM (e.g. co-located imager and spectrometer).
  • Trigger rates.
    • Single shot to 120 Hz. Everywhere in between
  • Data rates.
    • Single shot to 120 Hz. Everywhere in between
    • Mostly 10 Hz and below



  • No labels