1 / 9

Positron Source Target Update

Positron Source Target Update. Tom Piggott Jeff Gronberg Lisle Hagler Dain Holdener Marty Roeben This work was performed under the auspices of the U.S. Department of Energy by University of California, Lawrence Livermore National Laboratory under Contract W-7405-Eng-48. UCRL-PRES-227298.

telders
Download Presentation

Positron Source Target Update

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. Positron Source Target Update Tom Piggott Jeff Gronberg Lisle Hagler Dain Holdener Marty Roeben This work was performed under the auspices of the U.S. Department of Energy by University of California, Lawrence Livermore National Laboratory under Contract W-7405-Eng-48. UCRL-PRES-227298

  2. Session Schedule • Introduction (Piggott) - 5 mins • Livermore update (Piggott) - 10 mins • UK update (Bailey) - 10 mins • Graphite/ liquid Pb development (Logatchov, presented by Bailey) - 5 mins • Heat deposition, activation of target and capture system (Ushakov) - 30 mins • Eddy current simulations (Rochford) - 10 mins • Discussion - 20 mins • Next Session • OMD overview (Gronberg) - 20 mins • OMD calculations, beam window heating (Gai) - 20 mins • Lithium lens, solenoid focusing alternatives (Mikhailichenko) - 30 mins UCRL-PRES-227298

  3. Action Items from September Meeting • Target prototype drawings (LLNL/RAL/DL) • In progress at LLNL and DL • OMD forces • Presentations from RAL and ANL • R&D timeline • Pending funding? • Remote handling impact (RAL/DL) • Presentation in Target Hall session • Alternative target materials (RAL/Liverpool) • In progress • Beam window viability (ANL) • Presentation in OMD session UCRL-PRES-227298

  4. Current Target Design • 1 m diameter, 5 spoke wheel • Shaft support on both sides UCRL-PRES-227298

  5. Shaft Support on Both Sides • Eliminates need for belt drive on motor • Allows use of standard water union • Requires two intrusions into vacuum space • Reduces deflection of target wheel UCRL-PRES-227298

  6. Rotordynamic/Vibration Calculations • Work was done for a four spoke, 2 m diameter wheel • Rotordynamic analysis • Structural/ vibrational mode analysis • Vibrational mode study suggested possible issue near operating point, so shift to a five spoke wheel was implemented UCRL-PRES-227298

  7. Flywheel Critical Speeds(Two-End Support Design) Support Translational Stiffness = 100,000 lbf/in Support Rotational Stiffness = 10,000 in-lb/rad Primary Critical Speed = 500 RPM 1st Secondary Critical Speed = 120 RPM 2nd Secondary Critical Speed = 170 RPM 4/rev Forward Tilt Whirl Mode Secondary Criticals 1/rev Primary Critical Speed Cylindrical Whirl Mode Backward Tilt Whirl Mode UCRL-PRES-227298 900 RPM Operating Speed

  8. Wheel Deformations (Two End Support) Static displacement of cantilevered design is 7.62 cm vs. 0.0254 cm for support on both ends UCRL-PRES-227298

  9. Current/Future Work • Redo thermal/structural calculations for 1 m wheel using energy depositions from simulations at SLAC/ANL • Redo rotordynamic/ vibration calculations for 1 m wheel • Working with metallurgist to address any issues from creep, fatigue, microstructure changes • Incorporating results from eddy current simulations into structural and vibration calculations • Continue working on prototype and experiment development UCRL-PRES-227298

More Related