How to Mass Produce Reliable Cryostats for Large Particle Accelerators

Accelerators such as the Fermilab Energy Doubler/ Saver require large numbers of reliable cryostats which can be mass produced. Successful production of these devices is an extremely exacting business, requiring great attention to detail. A method has been developed and adopted at Fermilab which provides the precise control of the manufacturing process, necessary whether the cryostats are manufactured in-house or purchased from industry. This paper describes the system in detail, showing the integration of the engineering specifications, the quality assurance program including the high vacuum leak testing methods, and the manufacturing and materials specifications. To date over one hundred reliable cryostats have been produced using this method; experience and results are discussed.