High intensity neutrino source superconducting solenoid cyrostat design Page: 3 of 8
This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
Conduction cooled Control Helium supply line.
copper lead. valve. /
Helium return line.
Power lead _ 2-phase.
80K anchor.
Removable ----- LN2 supply and
lead cover return lines.
HTS leads. -- - - Solenoid magnet
--- with helium vessel
Instrumentation --
/ access port. ------ Vacuum relief.
457 mm (18 inch) --Thermal shield.
diameter vessel. ---Support post.
FIGURE 2. Cross-section through the Type-1 solenoid cryostat.
Also challenging in this design is the fact that the power leads are not housed in the
cryogenic feed box but rather in the individual solenoid cryostats. The Type-1 solenoid
cryostat will have one pair of power leads while the Type-2 solenoid cryostat will have
three pairs so that the correction coils can be independently powered.
Other than the unique features described above, these cryostats are similar to other
superconducting magnet cryostats. There is a helium vessel, a thermal shield, MLI around
each cryogenic system, a cold mass support structure, a vacuum vessel and instrumentation
wires that make their way from inside the cryogenic systems to outside the vacuum vessel.
The first prototype cryostat assembly has been started as of this writing and is expected to
be complete by fall of 2007. FIGURE 2 shows a cross section through the Type-1 cryostat.
Helium Vessel
The cooling for these solenoid magnets is achieved by 4.5K pool boiling helium.
Single phase helium is fed from the upstream end of the system to the downstream end,
through a JT valve and 2-phase helium flows back through a 73 mm (2 inch IPS) diameter
return line. There is a pipe which tees off from the return line into the top of the helium
vessel which fills the vessel as well as allows boil-off gas to flow back to the return line.
The liquid level of the system is set inside an upstream feed box to ensure the solenoids are
always submerged in liquid helium. FIGURE 3 shows a model of the helium vessel along
side a picture of the prototype solenoid mounted inside the vessel.
Y -
FIGURE 3. The solenoid helium vessel. (Left) A model of the helium vessel shown with its piping
attached. (Right) A picture of the prototype solenoid mounted inside the helium vessel.
Upcoming Pages
Here’s what’s next.
Search Inside
This article can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Article.
Page, T. M.; Nicol, T. H.; Feher, S.; Terechkine, I. & Tompkins, J. High intensity neutrino source superconducting solenoid cyrostat design, article, June 1, 2006; Batavia, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc884340/m1/3/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.