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235 U, capture + fission with the TAC and the FTMG

235 U, capture + fission with the TAC and the FTMG. Emilio Mendoza Cembranos, Carlos Guerrero Sánchez, Daniel Cano Ott, Eric Berthomieux, Marta Sabate (*) and the n_TOF collaboration. (*) Summer student – FTMG preparation. Motivation. U235 – cross section.

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235 U, capture + fission with the TAC and the FTMG

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  1. 235U, capture + fission with the TAC and the FTMG Emilio Mendoza Cembranos, Carlos Guerrero Sánchez, Daniel Cano Ott, Eric Berthomieux, Marta Sabate(*) and the n_TOF collaboration. (*) Summer student – FTMG preparation

  2. Motivation

  3. U235 – cross section

  4. Measure the U235 capture cross section (at least up to 2keV, but probably up to 10 keV). Measure the “alpha ratios” (ratio between capture and fission). Measure the prompt fission gamma rays. Measure the fission cross section. Objective

  5. Experimental Setup

  6. Two different measurement configurations: 1 – 2FTMG: 2 samples with fission detectors + 8 samples without fission detectors. 2 – 10FTMG: 10 samples with fission detectors. Measurement configuration

  7. Measurement configuration

  8. Measurement configuration

  9. Measurement configuration

  10. Measurement configuration

  11. Measurement configuration

  12. Analysis

  13. TAC: alpha-gamma-noise discrimination cuts. Energy calibration (with calibration sources and also run by run, using the alpha spectra of the crystals). Time calibration. FTMG: Cuts for fission events. Time calibration. Both: Fission tagging procedure. Normalization of the fission detection (tagging efficiency = fission efficiency). What has been done

  14. Energy deposition histograms (2FTMG)

  15. Counting rate (2FTMG)

  16. Results

  17. 2FTMG

  18. 2FTMG

  19. 2FTMG

  20. 2FTMG

  21. 2FTMG

  22. 2FTMG

  23. 2FTMG

  24. 2FTMG

  25. 2FTMG

  26. 2FTMG

  27. 2FTMG

  28. 2FTMG

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