ESS engineering meeting

Tuesday 4 Apr 2017, 09:30 → 11:00 US/Central

A0 drafting room

Vladimir Nagaslaev (Fermilab)

Tuesday April 4, 2017:

 (Vladimir N., Matt Alvarez, Mike Pham, Christine Ader)

1. Christine informed on her recent communications with vacuum experts (in particular, John Anderson Jr.) – it’s been confirmed that con-flat coupling is a preferred solution.
2. Prototype labor resources for full-scale prototype ending in August then Construction Readiness Review
   1. The schedule for FSP assumes finishing design, procurement, fabrication of parts and assembly of the prototype
   2. It will be hard to get to the CRR before the prototype schedule is sufficiently completed
   3. CRR will be needed to warrant further funding
3. Matt thinks he needs 3 more months of design. He needs one month design for high-voltage feed-thru simulations with no recirculating fluorinert feed thru (current design).
   1. Vladimir: we have to make ALL efforts to accelerate fabrication.
   2. Matt THINKS he will make all efforts to finish all simulations by his hard date of May 16, so that Mike can be finishing the model
   3. Simulations continue to be the BOTTLENECK of the prototype design.
4. For testing purposes, they need 300 l/s ion pumps. They need two.
   1. Hopefully we can borrow those pumps for the prototype testing
5. Foil plane has to extend to 25mm (10 foils) further beyond the edge of the cathode on both ends. This may further reduce the length of the ESS2 cathode if vessel length is fixed. Difference between ESS1 and ESS2 is the length of the cathode. ESS1 is 1.25 m and doesn’t have to be reduced because it is easier to reduce the diffuser length in ESS1.
   1. Mike:  ESS2 cathode length 67.5”-2”=65.5”
6. The length of the vessel and frame are not changed by #5
7. Mike will make figures for ESS2 today.
8. Matt will finish model with spacers and will re-visit the frame. This week.
9. No meeting next Tuesday.