Use of Kapton film as a cryogenic construction material

✍ Scribed by R.C. Thiel; H.J.M. de Groot; J.W.C. de Vries

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 319 KB
• Volume: 24
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(84)90043-2

✦ Synopsis

seo a on m s a tubing of too-large an internal diameter, due to thermal cryogenic construction expansion of the delrin. Therefore curing at room temperature in the slowly turning lathe is necessary. material Afterwards, the delrin form can be removed by cooling the whole to liquid nitrogen temperature (at least 10 -15 min should be allowed for thorough cooling of the R.C. Thiol, H.J.M. de Greet and delrin). After removal, final hardening of the Kapton J.W.C. de Vries tubing can easily be performed in an oven.

If one wishes to turn down the outside of the Kapton tubing, the original form can be reinserted with no difficulty. In turning Kapton tubing, two precau-The construction and use of tubing fabricated tions are advisable: turn only with the direction of the from glued Kapton film is discussed, including various layers to avoid peeling, and use a sharp cutting tool. methods of attachment to metallic cryostat parts. A method for construction of He diffusion free gamma-

The low thermal conductivity of Kapton will lead to ray windows of Kapton film is also mentioned, more rapid dulling of the cutting edge than is usual for plastics. Although Teflon can also be used as a winding form, the shape and size instability have been