Spectrometer Solenoid Update

Spectrometer Solenoid Update

Steve Virostek - LBNL

MICE Video Conference #139April 14, 2011

Topics

•Manpower

•Technical progress

- Vacuum vessel FEA

- Vent/fill lines

- Instrumentation

- Shield material

•Quench analysis

•Workshop

Manpower Update•Roy Preece - now at LBNL and Wang NMR for one year - will help with assembly oversight and tracking

•Dean Sorensen - cryotech retired from Fermilab - consulting contract now in place

•Pan Heng - postdoc hired by LBNL - assisting Soren Prestemon with quench analysis

•Dennis Callais - LBNL cryotech now working at Wang NMR 3 days/week

- currently working on instrumentation plan and hardware

•Tapio Niinikoski – cryo engineer returning to LBNL 4/25

•John Joseph – LBNL EE assisting with power supplies

Technical Progress

•Vacuum vessel FEA - Model built by A. DeMello to assess design modifications

- Existing vacuum vessel is sufficient w/larger cooler cutout

- Tower material thickness to be increased to1/2” from 3/8”

•Instrumentation - Final plan for instrumentation locations and types

- Additional sensors to be ordered soon

•Vent/fill lines - Design details being discussed with vendor - modified design eliminates direct shine and allows top off

•Shield material - 1100 aluminum material ordered last week - both shields to be remade completely

Vacuum Vessel FEA Model

Vacuum Vessel Displacements

Modified Fill/Vent Lines

Quench Analysis Update

•Quench analyses being completed by Soren Prestemon (LBNL)and Vladimir Kashikhin (FNAL)

•Sensitivity studies for quench analysis are being carried out by new LBNL postdoc Pan Heng

•Soren Prestemon met w/Vladimir Kashikhin on 3/16 to discuss their results for the quench analysis; ongoing correspondence carried out by phone and e-mail

•Discussions under way with Wang NMR regarding the quench analysis and power supplies

•A concept to conductively cool the quench resistors is under development

Spectrometer Solenoid Quench Model

Passive Quench Protection System

Spectrometer Solenoid Workshop

•A Spectrometer Solenoid workshop is being organized by Steve Gourlay, LBNL AFRD Division Director

•Workshop to be held at LBNL on May 10th & 11th

•The two-day workshop will be used to discuss and finalize the plan for the reassembly of the Spectrometer Solenoids

•Final plan to be presented to MICE and MAP

•Schedule for reassembly to be updated when overall plan has been completed