24 january 2014 larp vtf follow-up meeting p. kovach vtf 1 larp vertical test facility vertical...
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24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 1
LARP Vertical Test Facility
Vertical Dewar Design,Magnet Prep And Installation
Paul KovachJanuary 24, 2013
24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 2
Outline
• Design details• Assembly sequence
24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 3
Design Details
24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 4
Overall System Configuration
24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 5
Self contained heat exchanger - copper pipe in yoke hole - connected directly to Nash pump
Vertical Dewar = 24KA vapor cooled leads, 1.9K, 1 atm vessel, 4.5K LHe “thermal shield”, insulating vacuum, instrumentation, etc.
24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 6
Top of lambda plate to bottom of dewar top hat = 40 in. (min. LHe distance ~ 28 in.)
1.9K
exh
aust
(to
Nas
h)
300K
4K li
quid
- ga
s
Inner / outer Insulating vacuum
4K heat shield (existing dewar)
Vertical Dewar Details
G-10 – SST Lambda plate
Bolted – metal seal1.9K-4.5K relief
G-10 hanging support
300K
1.9K
vacuum4.5K
vacuum
vacuum4.5Kvacuum
Bottom detail
4.5K-1.9K “J-T” pre-cool heat exchanger
1.9K heat exchanger pipe
24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 7
1.9k Heat Exchanger Details
1.9K
exh
aust
(Nas
h va
cuum
)
1.9K reservoir
helium pre-cool heat exchanger (from 1.9K exhaust)
Level Probe4.5k He Supply
24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 8
Assembly Sequence
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Cold Mass Ready For Up-Righting
Top Hat/ Lambda Plug Prep Fixture
Lifting Details
24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 10
Lower Up-Righted Cold Mass into Wiring Stand
Attaching Top Hat/ Lambda Plug Assembly
Remove Lifting Ring
Install In Wiring Stand
24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 11
Lower Magnet To Final Position In Wiring Stand
• Solder main leads
• Connect Hypertronics, etc.
Lower Cold Mass Assembly Onto Wiring Stand
24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 12
Existing Vertical Dewar
New Vacuum Jacketed 1.9K Vessel
Install 1.9K Vessel Into Vertical Dewar On Temporary Support Rings
Install 1.9K vessel Into Vertical Dewar (1 time only)
24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 13
Bolt Lambda Plug to 1.9K Vessel• Connect
vacuum line• Connect He fill
line• Install heat
exchanger, outer warm bore
Remove Temporary Support Ring And Lower cold mass, 1.9K Vessel Into DewarInstall inner warm bore
Lower Magnet Into 1.9K Vessel
Install cold mass into dewar
24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 14
Extra slides
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24 January 2014 LARP VTF Follow-up Meeting • P. Kovach VTF 18
Background Info
• Crane capacity: double hooks, 30T and 5T• Hook heights: 303 IN., 30t; 324 IN. APPROX, 5T• “dewar 3” = 6.1 m deep, sits 0.9 m above floor,
is 710 mm inner diameter• Plan assumes 4785 mm overall cold mass length