Model of an 80 K liner vacuum system for the 4.2 K cold bore of the Superconducting Super Collider 20 TeV proton collider
- Superconducting Super Collider Laboratory, 2275 North Highway 77, Waxahachie, Texas 75165 (United States)
In this article we discuss a model for an 80 K liner system for the beam tube vacuum of the Superconducting Super Collider (SSC). The liner is a coaxial perforated tube fitting inside the {similar_to}4.2 K bore tube of the SSC magnet cryostats. A liner of this type is useful for pumping the gas desorbed by synchrotron radiation out of the view of the synchrotron radiation and for decoupling the beam current from the 4.2 K refrigeration plant capacity. Addition of cryosorber on the bore tube, e.g., charcoal, greatly increases the H{sub 2} sorption capacity compared to the bare metal surface, thus lengthening the time between beam tube warmups. The model equations are useful for estimating the performance of the beam tube vacuum and for defining the experimental information necessary to make a prediction. Some analysis is also presented for 4.2 and 20 K liners and a simple 4.2 K beam tube without a liner. {copyright} {ital 1995} {ital American} {ital Vacuum} {ital Society}
- DOE Contract Number:
- AC35-89ER40486
- OSTI ID:
- 69454
- Journal Information:
- Journal of Vacuum Science and Technology, A, Journal Name: Journal of Vacuum Science and Technology, A Journal Issue: 4 Vol. 13; ISSN 0734-2101; ISSN JVTAD6
- Country of Publication:
- United States
- Language:
- English
Similar Records
The heat load of an 80 K liner for the SSC
The heat load of an 80 K liner for the SSC