1. Ciemat Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas Daniel Cano-Ott, June 14 th and 15 th, n_TOF External Panel Review Minor Actinide Samples for the n_TOF-Ph2 (neutron capture) measurements daniel.cano@ciemat.es

2. Ciemat Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas Daniel Cano-Ott, June 14 th and 15 th, n_TOF External Panel Review ElementAt 1/2LA (Bq)E_inh_effA (1mSv)lambdaN (Atoms)M (mg) (a)(Bq)(Sv/Bq)(Bq)(s-1) Pa2313.27E+041.15E-128.70E+086.72E-131.29E+21496.6 U232726.39E-131.56E+093.05E-105.13E+182.0 U2331600007002.95E-133.39E+091.37E-132.47E+229554.1 U2357.04E+082.56E-133.91E+093.12E-171.25E+2648858295.4 U2384.47E+092.38E-134.20E+094.91E-188.55E+26337944418.5 Am241432.22003.44E-122.91E+085.08E-115.72E+182.3 Am24373802003.36E-122.98E+082.98E-121.00E+2040.4 Pu2392.41E+044.10E-122.44E+089.11E-132.68E+20106.2 Pu2406.54E+034.10E-122.44E+083.36E-127.26E+1928.9 Pu2423.76E+053.93E-122.54E+085.84E-144.36E+211750.4 Cm2458.50E+033.44E-122.91E+082.58E-121.12E+2045.8 The two golden rules to be followed at the n_TOF Experimental Area: 1.ISO-2919 containers 2.Mass limits for actinides inside ISO-2919 containers (source: Thomas Otto, 2007)

3. Ciemat Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas Daniel Cano-Ott, June 14 th and 15 th, n_TOF External Panel Review Measurements done in 2004: 237 Np, 240 Pu and 243 Am samples inside Titanium ISO-2919 certified cannings. Ti ISO-2919 certified canning Very successful measurements even with NON-optimised cannings

4. Ciemat Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas Daniel Cano-Ott, June 14 th and 15 th, n_TOF External Panel Review Measurements planned for 2007 ->: 231 Pa, 233,235 U, 240,242 Pu, 243 Am samples inside ISO-2919 “long” containers (10 to 50 times less background, NIMA in preparation) Window surrounded by neutron absorber ( 10 B or 6 Li doped polyethylene) Thin Al backing + actinide sample He Neutron absorber Calorimeter Option 1: pure (n,  ) setup

5. Ciemat Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas Daniel Cano-Ott, June 14 th and 15 th, n_TOF External Panel Review Thin Al backing + actinide sample Ionisation chamber Neutron absorber Calorimeter Option 2: combined (n,  ) + (n,f) tagging setup

6. Ciemat Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas Daniel Cano-Ott, June 14 th and 15 th, n_TOF External Panel Review Calendar of events and actions: End of 2004. 1 st negotiation with the Russian Federal Center of Nuclear Physics (RFCNP - Sarov). First quotation for the samples. Postponed until n_TOF restart. 2005 – 2006. Optimisation of the sample container by MC simulations: CIEMAT and ITN. End of 2006. Meeting in Madrid: CIEMAT, CEA and Russian delegation lead by the Prof. Leonid Ponomarev (Scientific leader of MUCATEX). Preparation of a MoU for the preparation of MA samples for n_TOF-Ph2 Feb 2007 – Draft agreement between CIEMAT, CEA and the RFCNP. May 2007 – Meeting in Moscow between head of CIEMAT’s Nuclear Fission division and RFCNP head of laboratory. Agreement finalised and waiting now for the new offer. Ready for submitting a new proposal to INTC (+ 3 submitted already). Ready and anxious for the beam.

7. Ciemat Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas Daniel Cano-Ott, June 14 th and 15 th, n_TOF External Panel Review In Europe, those samples can ONLY be measured at n_TOF: facility + detectors + CERN infrastructure + EXTREMELY well characterised (years of work).