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Olli Launila - CERN, Geneva, Switzerland

Explore the status and future plans for the LARIS lab at CERN presented at the ISOLDE workshop in 2007. The lab aims to investigate more efficient ionization pathways for RILIS experiments through laser spectroscopy and fundamental atomic spectroscopy questions. Utilizing multi-step laser ionization spectroscopy with tunable lasers, the lab experiments on stable isotopes for precise determinations. The presentation includes the lab's experimental methods, equipment details, and a purchasing plan update. The schedule outlines timelines for operational readiness, with responsibilities clearly assigned. Financial expenditures for 2006 are also detailed, with a look at the lab's budget allocation. Discover the ongoing advancements and progress toward achieving operational efficiency in summer 2008.

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Olli Launila - CERN, Geneva, Switzerland

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  1. The LARIS lab Status and plans for the LARIS lab at CERN Presentation at the ISOLDE workshop 13.02.2007 at CERN Abstract #9: “The LARIS lab” BERG, Lars-Erik (Royal Institute of Technology) FEDOSSEEV, Valentine (CERN) LAUNILA, Olli (Royal Institute of Technology) LINDROOS, Mats (CERN) LOSITO, Roberto (CERN) MARSH, Bruce (CERN) PAUCHARD, Thomas (Royal Institute of Technology) TRANSTRÖMER, Göran (Royal Institute of Technology) VANNESJÖ, Johanna (Royal Institute of Technology) ÖSTERDAHL, Fabian (Royal Institute of Technology) Funding: Knut and Alice Wallenberg Foundation Olli Launila - CERN, Geneva, Switzerland

  2. CERN, Meyrin Olli Launila - CERN, Geneva, Switzerland

  3. CERN, Meyrin (zoomed) Bldg. 252 Olli Launila - CERN, Geneva, Switzerland

  4. Location of the LARIS lab Olli Launila - CERN, Geneva, Switzerland

  5. LARIS lab Purpose of the lab: Main goal: To investigate new, more efficient ionization pathways for atoms in RILIS experiments. For this, autoionizing states of atoms need to be mapped out through laser spectroscopy. Secondary goals: Questions related to fundamental atomic spectroscopy, e.g. accurate determinations of atomic ionization potentials. Olli Launila - CERN, Geneva, Switzerland

  6. Ionization schemes Below, some laser-ionization examples with low overall yield, where the final ionization step is non-resonant (low efficiency): 5 % 3 % 1 % From Köster et al. (2002) Olli Launila - CERN, Geneva, Switzerland

  7. LARIS lab Experimental method: Multi-step laser ionization spectroscopy on laser-ablated stable isotopes, using up to three simultaneously tunable 10 Hz solid-state lasers for the ionization. Sources: Smalley-type ablation source (rotating metal rod with pulsed valve); Effusive oven source. Detection: Time-of-flight mass spectrometer. Olli Launila - CERN, Geneva, Switzerland

  8. Laser 1 (Continuum PowerLite 7010 + OPO Mirage) Tuning range: 720 - 920 nm (fund.), 360 - 460 nm (2w) 532 nm, 10 Hz Olli Launila - CERN, Geneva, Switzerland

  9. Laser 2 (Spectra Physics Quanta-Ray PRO 230-10 + MOPO HF) Tuning range: 450 - 690 nm (signal), 735 - 1680 nm (idler) 355 nm, 10 Hz MOPO-HF Olli Launila - CERN, Geneva, Switzerland

  10. LARIS lab with three tunable lasers Auto-ionizing state 1 IP 2 Boxcar Integrator CEM (MS) Wavelength meter 3 DC 3 kV Pulsed 32V OPO 3 Nd:YAG 3 2w generators Nd:YAG 2 OPO 2 Nd:YAG 1 OPO 1 Olli Launila - CERN, Geneva, Switzerland

  11. A Smalley-type ablation source with skimmer and TOF-MS 20 000 K in the plume From Doverstål et al. ‘USIP Report 93-11’, Stockholm University, Nov. 93 Olli Launila - CERN, Geneva, Switzerland

  12. SU atomic beam apparatus (old design) TOF-MS Ionization chamber Ablation chamber From Doverstål et al. ‘USIP Report 93-11’, Stockholm University, Nov. 93 Olli Launila - CERN, Geneva, Switzerland

  13. SU atomic beam apparatus (new design) Ablation chamber TOF-MS Olli Launila - CERN, Geneva, Switzerland

  14. LARIS atomic beam apparatus (to be constructed) Optical spectrometer Fluorescence excitation laser Ablation laser Reflectron TOF-MS Gate valve Skimmer Extraction optics Carrier gas Electrodes Optional laser beam Bellow Rotating rod, pulsed valve assembly Pump Pump Ionizing laser beams Olli Launila - CERN, Geneva, Switzerland

  15. LARIS purchasing plan Olli Launila - CERN, Geneva, Switzerland

  16. LARIS status, FEB 2007 • Laser 1: A new OPO crystal is under intallation. Operational in FEB 2007. • Laser 2: Final tests performed. Fully operational now. • Laser 3: Purchasing will start in OCT 2007. • Optics and optomechanics purchasing completed, AUG 2006. • Goggles and power meter purchasing completed, AUG 2006. • Delay generators delivered, SEP 2006. • Pump system delivered, DEC 2006. • Ablation laser purchasing in progress. Operational JUN 2007. • Wavemeter delivered, JAN 2007. • Data collection system purchasing in progress. • Transport of the SU atomic beam apparatus to CERN, DEC 2006. • First ionization experiments with this system in JUL-SEP 2007. • Construction of the new system will take place in parallel with these • experiments. Expected operational in summer 2008. • Mass spectrometer purchasing postponed. Restart OCT 2007. • Oscilloscope purchasing postponed. Restart JAN 2008. Olli Launila - CERN, Geneva, Switzerland

  17. LARIS schedule 2006 2007 2008 Laser 1 Laser 2 Laser 3 Ionization chamber Ablation laser Ablation chamber Pump system Electronics Optics, optomechanics Goggles, power meter SU atomic beam app. Wavemeter Delay generators Oscilloscope Mass spectrometer Legend Purchasing Operational Testing Olli Launila - CERN, Geneva, Switzerland

  18. Responsibility assignment matrix A = Approving P = Performing R = Reporting Olli Launila - CERN, Geneva, Switzerland

  19. LARIS expenditure 2006 Olli Launila - CERN, Geneva, Switzerland

  20. LARIS expenditure 2006, continued Olli Launila - CERN, Geneva, Switzerland

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