1 / 22

Prototype Test Facility

Prototype Test Facility. Overview Cryogenic measurements Results Panning for a wide necked bath cryostat Outlook by Claus Schroeder (GSI). Overview, what happend. 2001: Planning starts Spring 2004: Installation of the cryo plant November 2004: Cryo plant in operation

eros
Download Presentation

Prototype Test Facility

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Prototype Test Facility • Overview • Cryogenic measurements • Results • Panning for a wide necked bath cryostat • Outlook • by • Claus Schroeder (GSI) GSI-Cryoexpertmeeting; 19. & 20.09.2007

  2. Overview, what happend • 2001: Planning starts • Spring 2004: Installation of the cryo plant • November 2004: Cryo plant in operation • Spring 2005: Feedbox installation • Summer 2005: Universal cryostat installed • November 2005: Feedboxes tested • Spring 2006: Cryogenic part of the test facility ready • April 2006: First measurements (busbars, heat exchangers) • September 2006: First magnet installed (GSI001) • February 2007: Anti-cryostat installed • August 2007: SIS100-adapter and VF-sensor tests The team: Gerti Walter (till 2005), Stephan Berlinghof (2005-2006), Ralf Stickler (2005-2007) Franz Walter, Günter Hess, Marion Kauschke, Yu Xiang, Horst Welker, Pierre Schnizer, Andre Stafiniak and a lot of groups of GSI GSI-Cryoexpertmeeting; 19. & 20.09.2007

  3. Overview, what we have power supply up to 11kA up to 14kA/s feedbox 1 magnet in own cryostat cryo plant distribution box feedbox 2 universal- cryostat & cold mass magnet TCF 50, loan by CERN; 350W@4K • Distribution and • processing of the • helium; • Bath cooling • 2 phase cooling 5g/s • Supercritical 150g/s • Temperatures down • to 3.8K • Pressures between • 1.2 and 5 bar • Feeds helium and • current into the magnet; • measurement of: • Mass flows • Temperatures • Pressures • for cryogenic • heat loss calculation • Enables measurements • directly on the magnet; • Field measurements • within the anti-cryostat • Additional sensors • 2 Void fraction sensors GSI-Cryoexpertmeeting; 19. & 20.09.2007

  4. Overview, what we have Universal cryostat at the right View of the test area Distribution box between cold box and the feedboxes GSI-Cryoexpertmeeting; 19. & 20.09.2007

  5. Cryogenic measurements Cryosystem: 6200h Total running time 2000h with pumping unit at 60g/s Cryostat: Table could be cooled to LHe-temperature Shield could be cooled by LN2 or GHe Cooldown: GSI001: 20h GSI001 during its installation in the universal cryostat at the test facility GSI-Cryoexpertmeeting; 19. & 20.09.2007

  6. Cryogenic measurement . heat loss = m(h(pout;tout))-h(pin;tin)) Schematic sketch of the measurement GSI-Cryoexpertmeeting; 19. & 20.09.2007

  7. Results • For GSI001: • Quench measurements • AC loss measurements (calorimetric) • AC loss measurements (V-I-method) Quench measurements Typical result for calorimetric measurement Comparison of calculated an measured values GSI-Cryoexpertmeeting; 19. & 20.09.2007

  8. Results Ongoing tests with Void Fraction sensors and SIS100 adapter: VF-sensor-2 seems to work. VF-sensor-1 we find problems in the RF-detector (will be fixed by JINR) SIS100-adapter worked up to 7,7kA DC and up to 8kA/s continuous ramping to 7kA. Above this values quenches appear in the cable between feed through and junction. We will redo this test with more voltage taps, in order to define the exact weak point. SIS100-adapter has to work at 14kA/s ramping to 7kA (4T/s to 2T) Testresults of void fraction sensor GSI-Cryoexpertmeeting; 19. & 20.09.2007

  9. planning for a wide necked bath cryostat ? Planning and installation of a wide-necked bath cryostat with 1,8m diameter for the test of the 13to SuperFRS magnets as the third test bench: GSI-Cryoexpertmeeting; 19. & 20.09.2007

  10. planning for a wide necked bath cryostat ? Overview of the existing test facility and the possible location of the wide neck cryostat. For this location a rearrangement in the hall is needed. A location nearer to the distribution box is not possible due to a gully under the floor. GSI-Cryoexpertmeeting; 19. & 20.09.2007

  11. Outlook, next tests • Installation and tests of first SIS100 model magnet • starts October • Preparation of the 2. test bench for testing full size model magnets • should be ready in December GSI-Cryoexpertmeeting; 19. & 20.09.2007

  12. GSI-Cryoexpertmeeting; 19. & 20.09.2007

  13. Distribution box Barber nickelson pump: 50-200g/s Ejector: temperatures down to 3.8K LHe-reservoir Inlet heat exchanger for temperature regulation GSI-Cryoexpertmeeting; 19. & 20.09.2007

  14. Cooling of the heat exchanger GSI-Cryoexpertmeeting; 19. & 20.09.2007

  15. 2 phase cooling GSI-Cryoexpertmeeting; 19. & 20.09.2007

  16. Supercritical cooling GSI-Cryoexpertmeeting; 19. & 20.09.2007

  17. Feedbox GSI-Cryoexpertmeeting; 19. & 20.09.2007

  18. Results heat losses measured at GSI (including bus-bars): heat losses measured at BNL: * = extrapolated values GSI-Cryoexpertmeeting; 19. & 20.09.2007

  19. measurements of GSI and BNL GSI-Cryoexpertmeeting; 19. & 20.09.2007

  20. heat losses measured at GSI: V-I-method heat losses measured at BNL: V-I-method * = extrapolated values GSI-Cryoexpertmeeting; 19. & 20.09.2007

  21. measurements of GSI and BNL GSI-Cryoexpertmeeting; 19. & 20.09.2007

  22. Errors of cryogenic heat loss measurement *by heater; means an inexact additional measurement using the heater power measurement in the distribution box (±10W) GSI-Cryoexpertmeeting; 19. & 20.09.2007

More Related