Attendees: Eliazar, Armin, Alex, Rebecca, Eric, Elena
- Announcements
- Descoping Detectors/Lasers from HE project BUT!! going to move scope to other future funded project (MIE 2024) and there's plenty $ there to fund full detector + CO2 cooling
- Jungfrau 16M between now and HE.
- Director's Review slides - next week
- Documents:
- MFX + XPP mega schematic - Elena done w/mechanical - DSG-000032289; and vacuum- DSG-000032285; awaiting input from others.
- ESD - LCLSII-HE-1.4-ES-0476
- Laser PRD-Alex looking for written agreement - this week?
- ICD-Lasers - access on working site: https://slac.sharepoint.com/:w:/r/sites/lcls/lcls-2-he/wd/ICD/LCLS-II%20HE%20MFX%20Lasers%20ICD.docx?d=w73e52e9056f94e0cb9df481c8cd63f6d&csf=1&web=1&e=hJLtqF
- ICD - controls!
- meeting with Maggie – when?
- envelopes? add to models?
- dedicated controls person??
- RDS- check existing conditions with Matt.
- Laser coordination
- monthly combo meeting - engineering or requirements/science? next on Jan 24th
- ICDs
- PRD
- Other...
- Model -
- transport line is now under raised floor — please verify height is correct.
- can we move downstream 1.5"?
- can we shorten first drift segment by 9" to move flange away from cross member?
- interference with stand → igor is designing new cross braces
- raised laser table → no showstopper issues ?
- maybe extra bracing down the line -
- stay-clears for in-between laser table and diagnostic stand - interface is tricky
- LSS safety system shutters are there
- controls need access
- Ongoing requirements negotiations/meetings
- liquid phase chemistry stuff wasn't really captured → meeting on Monday with Tim VD/Roberto?
- review of historical laser parameter requests
- Tim was invited to last mtg. and explained his requirements
- NO NEED FOR CHANGES. Written Agreement pending. (CC DF)
- we are also ready to design laser out-coupling when laser team has details/requirements available
- Does the detector situation matter? beam tube size? this geometry is important...
- ideal hole diameter?
- what is needed?
- what is common ?
- document on confluence and eventually in PRD
- Resend Z location info to M. Greenberg - help him figure out divergence etc. which will let us know what hole diameter we need...
- thermal issues (see below)
- ICD–up on working site? (add link)
- monthly combo meeting - engineering or requirements/science? next on Jan 24th
- Facilities coordination - need to start discussing
- When can we set up temp monitoring?- Alex found data!
- Add more sensors!!
- near CXI KB location (1 min sampling rate)
- near MFX KB location (1 min sampling rate)
- near Laser table (1 min sampling rate)
- Detector Cooling
- Room Temperature control - can we control temperature locally at/near MODS table? easier? - first we need requirements
- +/- .1 deg stability target - what does "facilities" think of this?
- where exactly is stability needed?
- air flow rate?
- think about cable runs and duct work - maybe we can add in next revision run
- see example from Frank? https://slac.sharepoint.com/sites/lcls/lcls-2-he/wd/RDS/LCLSII-HE-1.4-RD-0439.docx (20fpm ave)
- do we have data? we have data at the exit window...moar data needed? can we turn temp sensor on? with data logger?
- open air flow meter? should we do this?
- environment around mirror systems need special consideration?
- Joe also has some data (tyler johnson has designed some environmental sensor boards)
- stability more important than accuracy of temp - can we control this operationally (letting things warm up and settle?)
- timing impact
- pointing impact
- local control may not be possible → room data sheet?
- get some data about current air handling system for a reference point
- JJ zooms/visit (27th) - questions about sticky slits
- Meeting later this week with Christian? Thurs morning?
- HE Overview
- sticky slits
- transfocator backlash?
- adjustable apertures/power slits upgrade
- attenuators
- supply chain issues?
- Meeting later this week with Christian? Thurs morning?
- Radiation safety
- Beam dump sizing preliminary calcs. for 1W
- energy? Alyssa has considered 3keV...
- 200W? what is necessary to consider?
- Alex send email with request to change some parameters
- air attenuation in XRT enough? Yiping/Lin - early Feb
- ray trace - progress beginning
- exit windows - failure modes?
- Beam dump sizing preliminary calcs. for 1W
- Detector - MIE