1 / 12

Survey of LEPS at TPC

Survey of LEPS at TPC. Wen-Chen Chang. Charge. the flux, energies, and polarizations of the beams that can produce at TPS. Since it will not be tunable, how easy it will be for you change your laser system to get different beam energy?

hana
Download Presentation

Survey of LEPS at TPC

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. Survey of LEPS at TPC Wen-Chen Chang

  2. Charge • the flux, energies, and polarizations of the beams that can produce at TPS. Since it will not be tunable, how easy it will be for you change your laser system to get different beam energy? • the cost for the detector, targets (including polarized ones), laser systems, and electronics, • how can you compete with MAIMI II, Jlab, and SPring8 as JW asked? • currently planned exps. on Roper resonance.

  3. Photon Flux

  4. Cost Estimate • Laser: $200K USD / per unit • Target: un-polarized LH2/LD2 target $20K / Polarized HD target $1M • Detector: crystal ball with 4 coverage, my guess is $300K – 500K • Electronics: $500K • In total: • Unpolarized: $1.2 M • Polarized: $2.2 M

  5. LEPS2 • Higher photon flux: 10MHz • Detectors with large acceptance: move E949 detector system from BNL to Spring-8 • Higher photon energy: 3.5 GeV

  6. MAMIC

  7. Experimental set-up • Tagged photon beam Mainz: mp£ Eg £ 800 MeV (Photon 10**8 Hz) Bonn: 0.6 GeV £Eg £ 2.9 GeV • Circularly polarized photons Bremsstrahlung of linearly polarized electrons • Longitudinally polarized Protons/Deuterons Frozen spin butanol target (Bonn, Bochum, Nagoya) • Large acceptance hadron detectors • Mainz: DAPHNE detector (Pavia, Saclay) + forward angle detectors (Pavia, Mainz, Tübingen,Gent) • Bonn: GDH Detector (Erlangen, Tübingen, Gent)

  8. http://theory.gsi.de/hirschegg/2004/Proceedings/Beck_134.93.132.231_Ftmphirschegghirschegg1example.pdfhttp://theory.gsi.de/hirschegg/2004/Proceedings/Beck_134.93.132.231_Ftmphirschegghirschegg1example.pdf

More Related