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HES-HKS & KaoS meetin g

HES-HKS & KaoS meetin g. Toshi Gogami 8Nov2013. 11/2 @ 秋保大滝. Contents. Virtual photon flux Collimator position HES-HKS momentum matching Blind analysis. HES collimator. Seed : virtual photon associated. Virtual photon flux . Γ’ = 2.81E -5 +- 0.04E -5 [ /electron] .

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HES-HKS & KaoS meetin g

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  1. HES-HKS & KaoS meeting Toshi Gogami 8Nov2013 11/2 @ 秋保大滝

  2. Contents • Virtual photon flux • Collimator position • HES-HKS momentum matching • Blind analysis

  3. HES collimator Seed : virtual photon associated

  4. Virtual photon flux Γ’ = 2.81E-5 +- 0.04E-5 [ /electron] Collimator position -7.7 cm Γ’ = 4.33E-5 +- 0.05E-5 [ /electron]

  5. 12C データは-7.7cm で取っていると思っていた が、

  6. Hall-C logbook User name kohlm Log entry time 10:45:17 on October 05, 2009 Entry number 188508 Followups: 188532 10/05/09 13:27 Nue We changed collomator position to recover high P coin events in HES keyword=HES collimator position changeChanged HES collimator position (~3cm down), after run 76072 

  7. From EPICS information 75813HES SS=-330mm75814HES SS=-330mm75815HES SS=-330mm75816HES SS=-330mm75817HES SS=-330mm・・・・ ・・・ 76072HES SS=-330mm76073HES SS=-300.2mm 76074HES SS=-330mm ?76075HES SS=-300.2mm76076HES SS=-300.2mm ・・・ -4.7 cm -7.7 cm

  8. HES HKS matching

  9. HES HKS matching 52ΛV g.s. 12ΛB g.s. Λ Σ0

  10. Different momentum region different angular region

  11. Blind analysis(Σ0入れました) Distorted Momentum tune [5 iteration, 5 loop] Momentum (0th ) + angle [5 iteration, 1loop]

  12. Λ Missing masses 1 2 3

  13. Momentum 1 2 3

  14. x’ and y’ 1 2 3

  15. Summary • Virtual photon flux • Collimator position , matching • Blind analysis • In progress

  16. Outlook • Matrix tuning • A=52 • Formation cross section • ひとまず出す(次回) • Binding energy • Fitting (12ΛB, 10ΛB, 7ΛLi 次回) • Blind analysis • Matrix distortion • Seed generation • Hypernuclei • Background • Radiation tail • Ask Miss. Fujita

  17. Backup

  18. HES acceptance

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