Reaction measurement Instrument ANNRI. Hideo Harada. Research Group for Applied Nuclear Physics. 5th ASRC 2012 at Tokai

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1 J PARC and Accurate Neutron Nucleus Nucleus Reaction measurement Instrument ANNRI Hideo Harada Research Group for Applied Nuclear Physics Japan Atomic Energy Agency (JAEA) 1

2 What is the J PARC? J PARC (Japan Proton Accelerator Research Complex) The J PARC center was established, on February 17, 2006, under the agreement bt between JAEA and KEK for the purpose of managing J PARC jointly and cooperatively. The variety of secondary particle beams (Neutron, muon, pion, kaon and neutrino beams) are all produced. Dr. Ikeda will overview the J PARC before the tour. 2

3 The J PARC Neutrino Beams (to Kamioka) Linac 3GeV Synchrotron J PARC Facility (KEK/JAEA) South to North Materials and Life Experimental Facility CY2007 Beams JFY2008 Beams JFY2009 Beams Bird s eye photo in January of 2008 Hadron Exp. Facility

Primary Proton Beam Proton Energy 30 GeV Av.

167 Hz (6 sec period) Pulse Width 2 sec Prof.

2012) J-PARC 50 GeV Synchrotron (15 A) Nuclear and

Hall) Meson (K ±, K 0 L, ± )b beams of world

4 Primary Proton Beam Proton Energy 30 GeV Av. Beam Power 3.2 kw Pulse Rate Hz (6 sec period) Pulse Width 2 sec Prof. (20 Feb. 2012) J-PARC 50 GeV Synchrotron (15 A) Nuclear and particle physics experimental facility (Hadron Hall) Meson (K ±, K 0 L, ± )b beams of world highest intensity (x10 of BNL-AGS, x100 of KEK-PS) Launched in 2009, Beam intensity and quality being improved 60m x 56m

5 Nuclear & Hadron Physics at J-PARC Secondary Facility information was given by Prof. (20 Feb. 2012) SKS K1.8 beam line π meson 1.6M π K meson 50k K K1.8BR beam line K meson 30k K KL beam line neutral K meson *av. Momentum 2 GeV/c *Production:64k KL's /pulse at 2GeV/c (at EXIT of beam line) ) K1.8 K1.8BR KL K1.1 5

6 J-PARC Materials and Life Science Experimental Facility Building dimension : Width : 70m Length : 146m Height : 30m Exp. Hall Height : 22m BL04: ANNRI 23 neutron beam lines will be Installed in experimental halls. 11 beam lines are under operation. 5 beam lines are under commissioning 2 beam lines are under construction 6

7 J PARC/MLF 1MW pulsedneutron source Super critical H circulation system P beam energy: 30GeV 3.0 Averaged power: 120 kw(2012/feb.) 1 MW(in a few years) Repetition rate: 25 Hz(40 ms interval) Pulse Width(150ns, double bunch, 600ns int.) Shutter H moderator Hg target Facility information was given by Dr. Maekawa@J PARC Neutron Beam Line(23) Proton beam 7

8 Time structure of neutron pulse 1 ev 以下では陽子ビームパルス構造の影響は小さい. Proton pulse beam structure Dual Bunch 600ns sity intens 150ns t Dual bunch structure appears clearly at En > 100 ev. Facility information was given by Dr. Maekawa@J PARC 8

9 J-PA RC Pow wer Expe ectation [MW] Revised rump up scenario after the disasters (restarting in December, User Program in Feb and March) New plan 3GeV RCS 50GeV MR Disaster Manufacturing 400MeV Linac Comp. 3GeV; 220 kw 50GeV 145 kw re-alignment of Linac shutdown Original Plan 3 GeV RCS 50GeV MR Summer shutdown 100kW Installing 400MeV Compon. Summer Shutdown 1MW.75MW FY Facility information was given by Dr. PARC 9

10 What is the ANNRI? The Accurate Neutron Nucleus Reaction measurement Instrument It was designed and constructed in order to supply accurate neutron capture cross sections of minor actinides (MA) and fission products (FP) required for developing innovative nuclear systems. The Collaboration on ANNRI construction Japan Atomic Energy Agency (JAEA) Tokyo Institute of Technology Hokkaido University Present study includes the result of "Study on nuclear data by using a high intensity pulsed neutron source for advanced nuclear system" entrusted to Hokkaido University by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT). 10

11 The Collaborators of nuclear data measurements using ANNRI H. Harada 1, T. Fujii 2, S. Fukutani 2, K. Furutaka 1, S. Goko 1, K. Y. Hara 1, K. Hirose 1, J. Hori 2, M. Igashira 3, T. Kamiyama 4, T. Katabuchi 3, A. Kimura 1, T. Kin 1, K. Kino 4, F. Kitatani 1, Y. Kiyanagi 4, M. Koizumi 1, M. Mizumoto 3, S. Nakamura 1, M. Ohta 1, M. Oshima 1, K. Takamiya 2, and Y. Toh 1 1 Japan Atomic Energy Agency (JAEA) 2 Kyoto University 3 Tokyo Institute of Technology 4 Hokkaido University This work is supported by JSPS KAKENHI ( ). 11

12 J-PARC Materials and Life Science Experimental Facility Target remote handling room Building dimension : Width : 70m Length : 146m Height : 30m Exp. Hall Height : 22m Cooling systems (Basement) BL04: ANNRI 23 neutron beam lines will be Installed in experimental halls under present design. J-PARC MLF, Tk Taken from HP of J-PARC 12

13 Accurate Neutron-Nucleus Reaction Instrument: ANNRI 13

14 Collimators and Beam Shape Rotary Collimator: 3, 7, 22 mmφ The case of 22 mmφ 14

15 Comparison of neutron flux /s) 2 Intensity (n/ev/cm DANCE n_tof ANNRI (1MW: 計画 ) ANNRI (200kW) Neutron Energy (ev)

LANL/USA 80 kw BaF 2 Am 241 432 y @2008 J PARC/Japan 200 kw Ge & NaI Cm 244

16 Activities on Neutron Capture using Spallation Neutrons Beam Detector Nuclide Half life life Power CERN/EU 3 kw BF BaF 2 &C 6 D 6 Sm LANL/USA 80 kw BaF 2 Am J PARC/Japan 200 kw Ge & NaI Cm Efficiencyi Energy resolution BaF 2 LANL Ge ANNRI 16

17 Capture Cross Section measurements at J PARC Cluster Detector BGO Detector BGO Detector Cluster Detector The 4 Ge spectrometer *Two Cluster Ge detectors with BGO anti coincidence i id shields were used. *One to Eight coaxial Ge detectors can be installed. The beam condition * kw, 25 Hz, Double Bunch * Notch filters: Mn, Co, In, Ag, Cd 17

18 Two Cluster Ge detectors with BGO anti coincidence shields Beam duct: Vacuum or He gas BGO anti coincidence shields 6 LiH neutron shield 18 18

Measurement of neutron flux distribution at the sample position Using the 10

304 4000000 3000000 2000000 Y(E ホウケイ酸ガラス n ) 478 kev rays y produced by the 10

kev ray spectrum measured by a Ge detector: A 478 kev ray peak is clearly

19 Measurement of neutron flux distribution at the sample position Using the 10 B(n, ) reaction per Channel Counts S Y(E ホウケイ酸ガラス n ) 478 kev rays y produced by the B(n, B(n, ) 反応 10 B (478 kev) reaction Energy kev ray spectrum measured by a Ge detector: A 478 kev ray peak is clearly shown. 478 kev ray yields as a function of neutron energy with notch filters and without them Y(E n ) R(E n ) = (E n ) (E n ) 19

20 Examples of Gamma ray pulse height spectra The case of Am Cou unts Am Al case Al case decay Net spectrum ray energy [MeV] 20

21 First Measurement of 244 Cm at J-PARC/MLF/ANNRI (J. Nucl. Sci. Technol. 47, 1097 (2010).) 21

22 Neutron capture cross section of 244 Cm was determined with the uncertainty of 6% Final results will be shown in J. Nucl. Sci. Technol. 外寸法 :9mmφ 1.5mmt 5mmφ 0.5mmt 22

23 107 Pd Sample : 107 Pd Purity : 15.3±0.4% Net weight ih: 20mg Beam power:120 kw Measurement time : 31h 23

24 What can we do using the ANNRI? 1 Accurate Neutron Capture Cross Section Precise background determination Neutron flux by using B(n, ) Shielded sample Unshielded sample 2 High resolution prompt gamma ray spectroscopy for each resonance Identification of resonance Identification of resonance spin Detailed study of decay scheme Detailed study of Strength function 24

25 Some recent measurement and results at the ANNRI Energy spectra and spatial distributions of neutron beams NIM A626, (2011). Neutron beam line J. Korean Phys. Soc., 59, 1781 (2011). Ge spectrometer J. Korean Phys. Soc., 59, 1769 (2011). Zr 91, 96 capture J. Korean Phys. Soc., 59, 1777 (2011). Pd 105, 106, 107, 108 capture J. Korean Phys. Soc., 59, 1777 (2011). Am 241 capture J. Korean Phys. Soc., 59, 1547 (2011). Cm 244, 246 capture J. Korean Phys. Soc., 59, 1828 (2011). Tc 99, I 129, Np 237 capture were also measured 25

26 Damage by the Earth hquake 26

27 Recovery from the Damage 27

28 Recovery from the Damage 3 March

29 Recovery from the Damage 3 March March

30 New Project at ANNRI JFY Nuclear Astrophysics Prof. Igashira Trace element Analysis Prof. Ebihara Nuclear Data H. Harada Research on nuclear astrophysics, nuclear data, and trace element analysis using pulsed neutrons 30

31 The use of ANNRI BL04(ANNRI) is also open for outside users. Accept proposals Twice a year Announcement of the J PARC MLF User Program for 2012B Call for Proposals parc.jp/matlife/en/applying/koubo.html Please contact on the use of ANNRI with harada.hideo@jaea.go.jp kimura.atsushi04@jaea.go.jp 31

32 Thank you very much for your attention. 32

Nuclear Data Study for Nuclear Transmutation

Nuclear Data Study for Nuclear Transmutation Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology Masayuki IGASHIRA Contents 1. Introduction 2. Present Status of the Accuracy of Nuclear