The cryopump system of the QQDDQ magnet spectrometer BIG KARL
- Cryopumps without liquid nitrogen shielding are used to provide a vacuum of 10−6 torr in the spectrometer. The vacuum system is subdivided in three sections that can be separated by valves. The first section (scattering chamber) has a volume of 60 l, two rotation transmissions with 35 cm dia and a sliding seal that allows a rotation of 160° without deteriorating the vacuum. The second section includes the vacuum chambers inside the magnets with 6 × 80 cm cross-section and a length of 1200 cm. The third section (detector box) has a volume of 4300 l and contains a moveable detector system. The gas inside the detector with a pressure of 760 torr is separated from the vacuum by a 15 μm mylar foil with an area of 300 cm2. The detector box can be valved off by a valve with the dimension of 10 × 100 cm. The layout of system is given. The instrumentation and the interlock system are described. First experiences with this system are presented.
Author: | Arno Hardt, Siegfried A. Martin, Jürgen Meissburger, R. Retz, J. Wimmer |
---|---|
DOI: | https://doi.org/10.1016/S0042-207X(78)80026-8 |
ISSN: | 1879-2715 (E-Journal); 0042-207X (Print) |
Parent Title (English): | Vacuum |
Publisher: | Elsevier |
Place of publication: | Amsterdam |
Document Type: | Article |
Language: | English |
Year of Completion: | 1978 |
Volume: | 28 |
Issue: | 10-11 |
First Page: | 483 |
Link: | https://doi.org/10.1016/S0042-207X(78)80026-8 |
Zugriffsart: | campus |
Institutes: | FH Aachen / Fachbereich Energietechnik |
collections: | Verlag / Elsevier |