Reliable point contact preparation and adjustment for SQUIDs

✍ Scribed by J.M. Dupart; C. Bodin; T. Pech

• Publisher: Elsevier Science
• Year: 1975
• Tongue: English
• Weight: 99 KB
• Volume: 15
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(75)90041-7

✦ Synopsis

When using point contact type SQUID devices in measuring systems, a basic requirement is the good quality and convenient adjustment of the pointed and fiat screws. In a recent paper I the construction of stable and permanent SQUIDs using oxidized niobium screws to form the point contact was described. It has been reported that the behaviour of these devices seems to be superior to those generally available, due essentially to the preparation procedure of the point contact.

The purpose of the present note is to describe a very reliable point contact preparation and adjustment method, developed and used by us for more than 18 months, for a commercially available SHE Picovolt Measuring System.