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AP-0 Target Hall Experience

Learn about the latest developments in the AP-0 Target Facility, including the installation of new targets and high-gradient lenses, as well as challenges related to radiation damage and transformer issues. Discover the potential for using AP-0 as a Target Test Facility after Collider Run II ends.

berthacampbell
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AP-0 Target Hall Experience

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  1. AP-0 Target Hall Experience Fermilab Anti-Proton Source P. Hurh (10-7-05) Mechanical Support Dept.

  2. Recent Events • New Target and Target Module installed to restore Target rotation • High Gradient Lens (8 mm) installed and operating • High Gradient Lens (10 mm) almost complete • Failures of electrical insulators (radiation damage?)

  3. P-Bar Source Overview

  4. P-bar (AP-0) Target Vault

  5. Workers in Vault

  6. Lithium Lens

  7. Pulsed Magnet

  8. Target on Frame

  9. Target Stack

  10. Target R2-T3

  11. Target R2-T3 7e12 ppp .15 mm sigma

  12. High Gradient Prototype 2 (10 mm) Lens

  13. Prototype 1 Lens Diffusion Bonding

  14. High Gradient Li Lens Current Status • Prototype 1 tested to failure and autopsied. • 2 lenses of proto 1 (8 mm) design constructed, 1 currently operational • Prototype 2 (10 mm) currently being filled with lithium

  15. Pulsed magnet just removed from Vault

  16. Pulsed magnet Torlon Damage

  17. Li Lens just removed from Vault (Transformer Damage)

  18. Ceramic Coating at BINP • Gas detonation method (melted alumina ceramic at 1500 m/s) • Up to 1 mm thickness • Not great corona stand-off, but can flex (up to 3˚ bend tests without cracking) • Tested on transformer (over 5 million test pulses, over 0.5 million in beam conditions)

  19. Gas Detonation Studies

  20. Ceramic Coated Li Lens Transformer Parts

  21. Coated Primary Plate

  22. Conclusion • We’ve had our ups and downs, but overall running with higher intensities than ever (7.5 e 12 ppp, 0.5 Hz, sigma of 0.15 mm). • Recent Target experience shows rotation crucial. May need to install beam sweeping. • High gradient 10 mm lens progress made. Should be testing by end of this year. • Focus is now on overcoming radiation damage problems in pulsed magnet and lens transformer. • Looking to use of AP-0 as Target Test Facility after Run II

  23. AP-0 Target Test Facility • After Collider Run II ends, AP-0 could be converted into Target Test Facility (2009) • Some minor kicker changes could allow full NuMI beam to be delivered to tests at AP-0 (as NuMI operations allow) • Just after Run II: • 120 GeV • 7.5-10 e12 ppp • 0.5 Hz • Sigma 0.1 - 5 mm (2,000 - 3,000 J/g in Ni) • After proton intensity upgrade (proton driver, proton accumulator): • 120 GeV • 2.2 MW • 0.75 Hz • Sigma ?? • Anyone interested?

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