Transcript Spectrometer solenoids

Spectrometer Solenoid – Quench Analysis
• The LBNL version of the quench model has been further refined
- Heng Pan is finishing various quench scenarios
• Soren Prestemon is trying to arrange a phone meeting w/Vladimir
Kashikhin on Thursday to discuss quench analyses
- Heng Pan is sending the latest LBNL results to Valdimir
• An eddy current analysis of the shield will be carried out by Heng
Pan to determine if an electrical split line is needed
- analysis will look at forces during quench
- preference is no split due to tight inner bore clearances
• Soren has a technician starting to mock up the quench resistor
conductive cooling scheme
- expect to complete the assembly this week
- test should take place next week
S. Virostek 4/27/11
Spectrometer Solenoid - Mechanical Design
• A PO change order to is being issued to Wang NMR this week for the
design work associated with the magnet modifications
• The vendor is beginning work on the details of the design
modifications (layout and fabrication drawings)
- includes 5+1 cooler layout, new radiation shield, modified shield
connection, modified vent/fill lines, new vacuum pump port
- vendor expects to complete the design details in 3 to 4 weeks
• The order for 1100 series aluminum to remake the radiation shields
is due in at Wang NMR in 2 to 3 weeks
• The magnet heat leak calculations will be revisited by Tapio
- the vendor will do his own analysis of the modified system
S. Virostek 4/27/11
Spectrometer Solenoid - Instrumentation
• The instrumentation and feedthrough plan has been completed
and is being reviewed
- Roy is compiling a detailed instrumentation spreadsheet
• Steve V. and Roy met with an instrumentation rep at Wang NMR
on Monday to discuss sensor types – order to be placed this week
• The current instrumentation plan will be checked by Roy and our
LBNL tech to ensure that all sensor types are separated (voltage
and He level may be on same feedthrough)
• We will need to make up new instrumentation cables to match the
feedthrough cfg.
- it may be possible to reuse the magnet end of the old cables
S. Virostek 4/27/11