Unlock instant, AI-driven research and patent intelligence for your innovation.

Low Temperature Cryostat

a cryostat and low temperature technology, applied in the field of low temperature cryostats, can solve the problems of complicated and awkward handling of liquid nitrogen and liquid helium, and the cost of liquid helium us

Inactive Publication Date: 2008-05-01
VERICOLD TECH
View PDF9 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention is a low temperature cryostat that is easier to handle and more cost-effective in operation. The invention solves the problem of using liquid nitrogen and liquid helium, which are complicated and expensive, by providing a more efficient and cost-effective cooling system. The invention uses a pulse tube cooler that has low frequency vibrations that can be minimized by arranging the turning valve outside the cryostat vessel and connecting it to the cryostat. The technical effect of this invention is to provide a more efficient and cost-effective low temperature cryostat for use in low temperature microscopy."

Problems solved by technology

Cooling with the aid of liquid nitrogen and liquid helium is disadvantageous in this known apparatus, since handling liquid nitrogen and liquid helium is complicated and awkward.
Moreover, the use of liquid helium is expensive.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low Temperature Cryostat
  • Low Temperature Cryostat
  • Low Temperature Cryostat

Examples

Experimental program
Comparison scheme
Effect test

first embodiment

[0024]FIG. 1 shows a schematic of the essential components of the invention, in the case of which the basic concept of the invention is concerned. A cooling device 4 in the form of a single-stage pulse tube cooler 10 is arranged in a cryostat vessel 2. The pulse tube cooler 10 comprises a pulse tube 12 and a regenerator 14 that are arranged between a cold head 16 and a valve head 18. A microscopy device 6 is mechanically and thermally coupled to the cold head 16 by means of a thermal coupling 8.

second embodiment

[0025]FIG. 2 shows a second embodiment having a cryostat vessel 102, a cooling device 104, arranged in the cryostat vessel 102, in the form of a two-stage pulse tube cooling system 110. The pulse tube cooling system 110 has a first pulse tube cooler 111 and a second pulse tube cooler 121. The first pulse tube cooler 111 has a first pulse tube 112 and a first regenerator 113. The first pulse tube 112 and the first regenerator 113 are arranged between a valve head 114 and a 60K cold head 115. The second pulse tube cooler 121 has a second pulse tube 122 and a second regenerator 123. The second pulse tube 122 is arranged between the valve head 114 and a 4K cold head 125, and the second regenerator 123 is arranged between the 60K cold head 115 and the 4K cold head 125. A ballast volume 116 is directly connected to the valve head 114 arranged outside the cryostat vessel 102. The valve head 114 and the ballast volume 116 are connected to a turning valve 118 via a flexible hose 117.

[0026]Ar...

third embodiment

[0029]FIG. 3 shows a detail of the invention, specifically the cold end 136 of the sample rod 132 with the confocal microscope 138. The confocal microscope 138 comprises a lens arrangement 146 that is thermally and mechanically connected to the 4K coupling 142 by means of a piezo positioning apparatus 148. A sample 150 to be examined is arranged below the lens arrangement 146. The light that originates from a light source (not illustrated), is reflected by the sample 150 and falls into the lens arrangement 146 is guided out of the cryostat vessel 102 via an optical fiber 152. The viewing light is preferably likewise coupled in via the optical fiber 152. The focusing of the lens arrangement 146 is performed by the piezo apparatus 148. The lens arrangement 146 can be moved and positioned on three spatial axes relative to the sample 150 with the aid of the piezo positioning apparatus 148. The entire arrangement is surrounded by a cladding 154 that is part of the sample rod 132.

[0030]FI...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A low temperature cryostat is disclosed. The low temperature cryostat may include a cryostat vessel, a cooling device arranged in the cryostat vessel for producing a cooling temperature level, a microscopy device for examining a sample, and at least one thermal coupling for thermally and mechanically connecting the microscopy device to the cooling device. The cooling device may comprise a pulse tube cooling system.

Description

RELATED APPLICATION INFORMATION[0001]This application claims priority to Patent Cooperation Treaty Application Number PCT / EP2005 / 056316 filed Nov. 29, 2005, which claims priority to German Application DE 20 2004 018 469.9 filed Nov. 29, 2004, both of which contents are incorporated herein by reference.NOTICE OF COPYRIGHTS AND TRADE DRESS[0002]A portion of the disclosure of this patent document contains material which is subject to copyright protection. This patent document may show and / or describe matter which is or may become trade dress of the owner. The copyright and trade dress owner has no objection to the facsimile reproduction by anyone of the patent disclosure as it appears in the Patent and Trademark Office patent files or records, but otherwise reserves all copyright and trade dress rights whatsoever.BACKGROUND[0003]1. Field[0004]This disclosure relates to a low temperature cryostat.[0005]2. Description of the Related Art[0006]It is conventional to make use in low temperat...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(United States)
IPC IPC(8): F25D3/10
CPCF25B9/10F25B9/145F25B2309/1408H01J2237/2001F25D19/006F25D2400/40F25B2500/13
Inventor HOHNE, JENS
Owner VERICOLD TECH