1 / 12

Laser Driven Target at MIT

Laser Driven Target at MIT. Chris Crawford, Ben Clasie, Jason Seely, Dipangkar Dutta, Haiyan Gao. Introduction Optical pumping Spincell optimization Components of the LDT Atomic Fraction Results Preliminary Polarization Future Work. Overview. Atomic Beam Source

kaseem-watts
Download Presentation

Laser Driven Target at MIT

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. Laser Driven Target at MIT Chris Crawford, Ben Clasie, Jason Seely,Dipangkar Dutta, Haiyan Gao • Introduction • Optical pumping • Spincell optimization • Components of the LDT • Atomic Fraction Results • Preliminary Polarization • Future Work Laser Driven Target http://ldt.mit.edu

  2. Overview • Atomic Beam Source • Well established technology • Can create pure spin states • 8 x 1016 atoms/s • 84% atomic fraction • 80% polarization • Laser Driven Target • Compact design • Active pumping—higher flux • 2 x 1018 atoms/s • 60% atomic fraction • 50% polarization Laser Driven Target http://ldt.mit.edu

  3. Optical Pumping At spin temperature equilibrium, the population of each spin state n(mF) is controlled by the Boltzmann equation. Laser Driven Target http://ldt.mit.edu

  4. Spincell Optimization • Developed a code to simulate recombination and depolarization • One must minimize the Surface Area / Volume ratio, and the length of the transport tube Dimensions: 2” diameter spherical spincell with 5 cm neck Laser Driven Target http://ldt.mit.edu

  5. Target Chamber Laser Driven Target http://ldt.mit.edu

  6. Polarimeter Laser Driven Target http://ldt.mit.edu

  7. Sextupole Magnet Laser Driven Target http://ldt.mit.edu

  8. QMA Detector Laser Driven Target http://ldt.mit.edu

  9. Dissociator Trials Laser Driven Target http://ldt.mit.edu

  10. Atomic Fraction Laser Driven Target http://ldt.mit.edu

  11. Preliminary Polarization Laser transmission Laser transmission QMA mass 1 signal QMA mass 1 signal • polarization: 20% (+ helicity) and 23% (- helicity) • polarization preserving mirrors only 87% efficient Laser Driven Target http://ldt.mit.edu

  12. Future Work • Redo polarization tests with correct mirrors. • Fine-tune operational parameters. • Investigate the quality of the spincell coating. • Investigate performance of sextupole filter. • Run tests with deuterium. • Redesign target for operation at BLAST. Laser Driven Target http://ldt.mit.edu

More Related