2024-01-26 - Science Team Meeting Notes

Measurement Innovations

Follow-up

Cost estimate of the specific projects - for MEC-U the question is quite different; other projects are focused on single diagnostics.

Talked to Corey at experimental systems meeting to get some WAG numbers that could be submitted. Design through implementation ~$.5M/device. Multiplying by number of requests puts it in category 2.

Facility Stress Test (mid February) - All Day workshop to question various assumptions that are driving up cost.

Copy over notes

1. Central Plant (aka Support Building).  Clean storage and storage.
   1. Do we really need this space or will M. Dunne provide storage space.  Consider transition to Operations.  AC:  Is the question - do we need the space or how do we use that space?  MM: Need from Charles impact on cost.  Clean room can get very expensive.  AC:  LLNL and Corey are familiar with optics.  MM:  What's our approach on building up payloads that go into SLIMs?  Need to be local?  Talk through a Day in the Life.  Need to find a balance.  AC: Possibility of decreasing/increasing credible scope.  Gilliss:  Final adjustments on target close to target chamber so we're not rolling out of alignment.  AF: Whatever we do in this series of workshops - need to document well.  Trade off analysis.  MM:  Talking through with Sally Spencer?  Lots of equipment showing up.
   2. Speaking of the question of TAO: 2020 UAP discussions on the second target chamber/area
2. Chicanes for personnel access and shield door with larger aperture.  Need to consider movable blocks.  Gilliss:  Egress/access and radiation safety.  AC: What do we really think radiation doses are going to be?  MM: Vulcan measurements led to difficult radiation safety requirements.  KL: Factor of 2 isn't going to change shield wall.  We should be considering potential cost savings.  TAO - how much external pushback will we get if we eliminate TAO?  Gilliss/AF: Shrinking of the cavern should be a last resort.  AF:  We should be careful about how we discuss TAO.
3. Access between Laser Halls.  Elevators, stairs, vestibule, etc.  New interfaces with FEH?  Can we imagine something simpler?  KL:  Might be good to think about requirements.  Access from XEH?  AC: Same people in workshops are the same people who came up with these ideas.  MM: Will need to bring in outside set of eyes.
4. Wall in Laser Hall to allow access to TAX.
5. Programming for TAO
6. LCLS-X.  Ensure there is a build option for a longer XEH.

Question: We've been designing for much higher beam time in the long run. Should we reconsider that value?

A detailed operations model is not there to sufficient level to firmly set the requirements - other than turnaround time.

Recalling at LLNL: workshops on future MEC-U / Lasers / – presenting lots of experiments at MEC-U

Current design is not linked back to the operations model. A good idea to build the connections after finalizing/validating the fundamental requirements at this location

Many requirements laid down run into engineering difficulties and come back. One is the weight capacity of a SLIM: 300 lbs is considered untenable and should come down to 200lbs.

Science requirements being translated into engineering requirements can be a long process - so we get late reacion to our science requirements- example of the LLNL laser.

Imagining TAO for a future multi-PW OPCPA