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HITRAP - a facility for experiments on heavy highly charged ions and on antiprotons

HITRAP - a facility for experiments on heavy highly charged ions and on antiprotons. Wolfgang Quint GSI Darmstadt and Univ. Heidelberg. HITRAP at the ESR Storage Ring. post- decelerator. stripper target. UNILAC. cooler Penning trap.

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HITRAP - a facility for experiments on heavy highly charged ions and on antiprotons

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  1. HITRAP - a facility for experiments on heavy highly charged ions and on antiprotons Wolfgang Quint GSI Darmstadt and Univ. Heidelberg

  2. HITRAP at the ESR Storage Ring post- decelerator stripper target UNILAC cooler Penning trap experiments with particles at rest or at low energies 400 MeV/u SIS • EXPERIMENTS WITH HIGHLY CHARGED IONS AND ANTIPROTONS AT EXTREMELY LOW ENERGIES: • g-factor measurements of the bound electron • mass measurements of extreme accuracy • laser spectroscopy • reaction microscope, collisions at very low velocities • surface studies and hollow-atom spectroscopy • x-ray spectroscopy U73+ U91+ U91+ ESR electron coolingand deceleration down to 4 MeV/u

  3. HITRAP facility at ESR g-factortrap SPARC-EBIT Other experimental setups H1-H6 IH-structure Cooler trap Double-drift-buncher RFQ HCI from ESR 4 MeV/u  0.5 MeV/u  6 keV/u

  4. HITRAP: Technical design to experiments matching section and cooler trap IH section RFQ section DDB section 7m

  5. Commissioning of IH-structure with bare gold ions Au79+ from ESR in August and October 2008 IH-structure double-drift buncher • successful tests of • beamline • detectors • bunchers • emittance meter • with beams from the ESR in August 2007 vertical beam line Experiments LEBT+Cooler-trap IH-structure+MEBT Double-drift-buncher RFQ

  6. HITRAP facility at ESR

  7. MeV/u 4 0.5 0 Commissioning of IH structure: Deceleration from 4 MeV/u to 0.5 MeV/u • Energy signal on single crystal diamond detector: Magnetic deflection set to 4 MeV/u Magnetic deflection set to 0.5 MeV/u Experiments IH-Structure TRAP DD-Buncher RFQ&LEBT commisioned commisioning ongoing installation ongoing

  8. Commissioning of RFQ decelerator and of cooler trap foreseen in April and autumn of 2009 HITRAP cooler trap RFQ decelerator vertical beam line Experiments LEBT+Cooler-trap IH-structure+MEBT Double-drift-buncher RFQ

  9. HITRAP Cooler Penning trap ● electron cooling ● resistive cooling to T = 4 K cooled HCI to HITRAP experiments highly charged ions from HITRAP decelerator extraction from cooler trap: fast (ms) or slow (ms...sec) U92+ e- e- 3

  10. Continuous Stern-Gerlach-Effect and double-trap technique for g-factor measurements s e E n l i e l c d t r l i e c i f p c o i t t e e n n t g i a a l M s h a p e • Principle: • Excitation of spin-flip in precision trap (homogeneous magnetic field) analysis trap • Detection of spin-flip in analysis trap (inhomogeneous magnetic field) precision trap

  11. Experimental setup for bound electron g-factor measurements on heavy HCI M. Vogel

  12. Laser spectroscopy of hyperfine splitting in highly charged ions • HFS wavelengths move into visible for Z>70 • very small Doppler width at T = 4 K • relative wavelength accuracy ≤ 10-7

  13. HITRAP at FLAIR - Facility for Low-energy Antiproton and Ion Research FLAIR NESR

  14. SPARC – Stored Particles Atomic Physics Research Collaboration:HITRAP for Stable and Radioactive Highly Charged Ions post- decelerator SIS 100 SFRS stripper target experiments with particles at rest or at low energies cooler Penning trap CR • EXPERIMENTS WITH HIGHLY CHARGED IONS AT EXTREMELY LOW ENERGIES: • stable and radioactive isotopes • mass measurements with radionuclides • new possibilities - calibration of hyperfine fields in simple systems - polarization of radionuclides - decay spectroscopy of highly charged radionuclides NESR LSR electron coolingand deceleration down to few MeV/u

  15. FLAIR Factor 100 more pbar trapped or stopped in gas targets than now FLAIR - Facility for Low-energy Antiproton and Ion Research HITRAP will receive 4 MeV antiprotons from LSR

  16. FLAIR Building HITRAP will deliver 5 keV antiprotons to low-energy experiments

  17. FLAIR: Antiproton Intensities SIS 100: acceleration of 2.8  1013protons, E = 29 GeV Antiproton target: production of 1.0  108 pbars/ 5 s, E = 3 GeV Collector ring CR: fast stochastic cooling in 5 s, N = 108/cycle RESR: accumulation of pbars, N = 108 – 1011 NESR: electron cooling, deceleration from 3 GeV to 30 MeV FLAIR LSR: deceleration from 30 to 0.3 MeV HITRAP:deceleration from 4 MeV to rest, av. intensity: 1x106/s • USR: deceleration from 300 to • 20 keV, av. intensities: • Reff = 1x1012/s at 300 keV • Rextr = 1x106 /s at 300 keV • Reff =1x1010/s at 20 keV • Rextr = 5x105 /s at 20 keV pbar experimental areas: E = 400 MeV to 5 keV

  18. HITRAP as decelerator and cooler facility for antiprotons at FLAIR: Plan B / Operation without LSR IF we build one more IH-structure with Vgap = 11 MV IF the NESR can decelerate anti-protons to 15 MeV and then HITRAP will not need the LSR storage ring to decelerate anti-protons to rest LEBT+Cooler-trap IH-structure+MEBT Double-drift-buncher RFQ HCI from NESR 15 MeV/u  4 MeV/u  0.5 MeV/u  6 keV/u (drawing not to scale)

  19. 15 MeV FLAIR Factor 100 more pbar trapped or stopped in gas targets than now HITRAP at FLAIR: Plan B / Operation without LSR 15 - 0 MeV

  20. Spectroscopy for tests of CPT and QED Antiprotonic atoms (pbar-He, pbar-p), antihydrogen Gravitation of antimatter Trapped and laser-cooled antihydrogen Atomic collisions Ionization, energy loss, antimatter-matter collisions Antiprotons as hadronic probes X-rays of light antiprotonic atoms: low-energy QCD X-rays of neutron-rich nuclei: nuclear structure (halo) HITRAP at FLAIR:Physics Topics with Antiprotons

  21. Summary and Outlook • HITRAP will be a unique facility for highly-charged ions up to U92+ at very low energies. • Commissioning of HITRAP Facility at the ESR at GSI is under way. • FLAIR and SPARC: • low-energy antiprotons and radioactive ions will be • available at NESR with high intensity. • The future plans of SPARC and FLAIR give a long-term perspective for HITRAP.

  22. HITRAP Collaborators GSI: K. Brantjes F. Herfurth O. Kester H.-J. Kluge S. Koszudowski C. Kozhuharov W. Nörtershäuser B. O'Rourke W. Quint Th. Stöhlker M. Vogel G. Vorobjev D. Winters St. Petersburg: A. Artemyev D.A. Glazov S. Karshenboim D. Moskovkin V.M. Shabaev V.A. Yerokhin Stockholm: R. Schuch et al. IAP Frankfurt: A. Schempp U. Ratzinger Mainz: S. Kreim C. Rodegheri B. Schabinger S. Stahl S. Sturm S. Ulmer A. Wagner J. Walz G. Werth TU Darmstadt: G. Birkl Th. Walther London: R. Thompson D. Segal Heidelberg: K. Blaum J. Ullrich KVI Groningen: R. Hoekstra supported by EU, DFG, BMBF

  23. Space Charge Limits in Rings extraction of 108 pbars from LSR to HITRAP at 4 MeV (by B. Franzke)

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