H Ejiri

50 %
50 %
Information about H Ejiri
Entertainment

Published on December 17, 2007

Author: lawson

Source: authorstream.com

Hiro Ejiri RCNP Osaka Univ., & JASRI Spring 8 For the ELEGANT Collaboration:  1. Oto Cosmo Observatory 2. Detectors and Physics Results 3. Future Plans 4. Progress of Oto Lab. Oto Cosmo Observatory      Present and Future Hiro Ejiri RCNP Osaka Univ., & JASRI Spring 8 For the ELEGANT Collaboration RCNP Research Center for Nuclear Physics:  RCNP Research Center for Nuclear Physics National Nuclear Physics Lab. Nucleon, Meson, and Quark Lepton Nuclear Physics. Ring Cycrotron lab. 0.4-0.5 GeV p, & light ions National and International users RCNP laboratory complex RCNP & Physics Osaka Univ. Neutrinos and DM research programs . :  RCNP & Physics Osaka Univ. Neutrinos and DM research programs . I. Oto Cosmo Observatory Underground Lab. n masses and natures by bb with ELEGANT V & VI DM WIMPs search by nuclear scattering . II. Cyclotron Lab. Charge exchange spin flip reactions to study nuclear responses for charged weak currents. III. Laser Electron Photon Lab. at Spring 8. Nuclear responses for neutral weak currenta. Slide4:  Osaka Univ. Oto Air port SK Oto Lab. is close to Osaka Univ. 100 km Kansai/Osaka Airport 40 km Oto Cosmo Observatory :  Oto Cosmo Observatory Unused 5 km railway tunnel.  1400 m we Lab.I, lab.II, lab.III New labs can be set in the center region of the 5 km tunnel. H. Ohsumi Proc. XI RCNP. Symp., World Scientific, (1996) 274-279 http://www.rcnp. Osaka-u.ac.jp/ Divisions/ np1-c/index.html                    . Lab.II Lab.I, III Nishiyoshino Oto To Osaka Lab.I. 33 m2 ELEGANT VI bb of 48Ca and DM with CaF2 Lab. II. 45 m2 ELEGANT V, bb of 100Mo and DM with NaI 60 km south of Osaka, near Int. Airport Slide6:  Experimental Roon I Muon flux at underground labs. in the world m 4 10-3 /m2/s Neutron 4 10-1/m2/s   Rn 10 Bq/m3 (Detector container 10 m Bq /m3) :  Muon flux at underground labs. in the world m 4 10-3 /m2/s Neutron 4 10-1/m2/s   Rn 10 Bq/m3 (Detector container 10 m Bq /m3) Oto Cosmo Observatory 1400 m w.e Slide8:  III. ELEGANT V ELEctron GAmma-ray Neutrino Telescope ELEGANT V   :  ELEGANT V    bb of 100Mo,116Cd bb-ray E&T PL g-ray by NaI DM –nucleus recoil E by NaI . H. Ejiri et al. NIM A302 1991 304 100Mo 0nbb by ELEGANT V :  100Mo 0nbb by ELEGANT V 100M0 95% enriched. 0.17 kg. Most stringent limit by exclusive(bb tracking) T0n > 1.0 (0.55) 1023y 68(90)%CL <mn> < 1.5 (2.1) eV <gB> < 9 (11) 10-5 H.Ejiri, N.Kudomi, et al., Phys. Rev. C 63 ’01, 65501 Slide11:  Present ELEGANT VI  CaF2 for 48Ca bb and 19F Spin Coupled DM:  ELEGANT VI  CaF2 for 48Ca bb and 19F Spin Coupled DM ELEGANT IV  CaF2 for 48Ca bb and 19F Spin Coupled DM :  ELEGANT IV  CaF2 for 48Ca bb and 19F Spin Coupled DM CaF2(pure) as light guide & active shield against PMT CaF2(Eu) is not transparent for U.V. light. bb & DM signals selected by role off ratio Measurement of 48Ca bb at Oto:  Measurement of 48Ca bb at Oto 2nbb (sim) BG (sim) 0nbb window T0n > 1.8 1022 y 90 % CL I. Ogawa et al., PANIC02, Nucl.Phys.2003   ELEGANT VI CaF2 19F light mass and simple large spin matrix element :   ELEGANT VI CaF2 19F light mass and simple large spin matrix element I. Ogawa, et al. Nucl. Phys. 663(2000) 869c R. Hazama, NIM A482 (2002) 297 Results of ELEGANT’s :  Results of ELEGANT’s Double beta decays EL III . Ge with NaI for bb of 76Ge : Limit of 1.9 eV (68% CL) on mn and 1st stringent limit on 0nbb to 2+ state. EL IV. 100Mo with Si detector array and Nal. EL V. Drift chamber for bb tracks , plastic scintillators for bb and NaI for g. 1st 2nbb lives for 100Mo and 116Cd. Most stringent limits on onbb 100Mo mn < 1.5 eV(68% CL). EL VI. Ca(F)2 Crystals with CsI. Limit on 0nbb of 48Ca: 7 eV Dark matter EL V. NaI 760 kg , annular modulation of WIMPS . Most stringent limits at the low mass region. EL VI. Ca(F)2 Spin-coupled WIMPS. http://www.rcnp.osak-u.ac.jp/~ejiri/PUB.html V. Future Experiments:  V. Future Experiments A. MOON Molybdenum Observatory Of Neutrinos for bb and low energy solar n’s. MOON 1 Proto - type MOON and R&D. B. CANDLES CA lcium fluoride for studies of Neutrinos and Dark Matters by Low Energy Spectrometers V. Future Experiments I MOON. Molybdenum Observatory Of Neutrinos for http://ewi.npl.washington.edu.:  V. Future Experiments I MOON. Molybdenum Observatory Of Neutrinos for http://ewi.npl.washington.edu. . bb-n, and low energy solar and supernova n’s. MOON collaboration  : Interenational collaboration RCNP/ Physics, Osaka Univ. General Arts Tokushima Univ. Phys. ICU. Tokyo, Phys. CENPA, Univ. Washington, LANL   Univ. North Carolina. FNAL Phys. Charles Univ. CERN High Energy Physics, Protvino. JINR VNIIEF Contact persons Hiro Ejiri and Hamish Robertson MOON Objectives .:  MOON Objectives . n studies in 100Mo : large responses for bb-n & low E ne’s . Double beta (bb) decays with mn~0.03 eV. Low E solar and SN ne . Two charged particle (b,b) spectroscopy with high localization in time & space. MOON, a super module of ~1 ton 100Mo & scintillators with modest volume and realistic purity. H.Ejiri,, Phys, Rev. Lett.,85 (2000) 2917 MOON Hybrid Detector :  MOON Hybrid Detector Mo film Super modules of fiber-plate scintillators with 100Mo films. 1. Position read-out Fibers (x-y) 2m - 2 mm - 0.4 mm 2. Energy read-out Plate scintillator with DE ~ s ~ 2 % 3. Modest volume with enriched Mo 4. Enriched Mo 85 % in 100Mo Centrifuges MoF6 gas Laser MOON 1. Proto type 100Mo 1 kg. Mn ~0.3 eV MOON 2. 1 unit : 100Mo 0.25 ton 2m – 2m – 1.7 m, Mn ~0.05 eV MOON 3. 4 units: 100Mo 1 ton. 2m – 2m -- 7 m, Mn ~0.02eV Fiber x Slide21:  EL VI ---CANDLES 48Ca for bb large Qbb = 4.27 MeV, small 0.19% 48Ca 7.7 g (EL VI) to O(10kg) & Enrichment 1K of 1 l crystals of CaF2 in iiquid scintillator 3.1 kg of 48Ca in 3.2 ton nCaF2 Goal 0.1 eV sensitivity. R & D Osaka Univ.Physics. Future Experiments II CANDLES VII. Progress & Grants :  VII. Progress & Grants I. ELEGANTs at Kamoka 1982--1994 1981 Start bb and n project at Osaka 1981-1982 ELEGANT I, II, Ge with NaI at Osaka 1982 –1984 ELEGANT III. Ge wih NaI Grant A. B 1982 – 1985 ELEGANT IV. Mo with Si. Toray Science Award 1984 EL III Starts at Kamioka Grant A. 1986 – 1990 ELEGANT V Mo Cd Drift Chamber & NaI Grant Special Project 1990 – EL V Starts run. 1993 – 1995 EL VI CaF2 with CsI Construction Grant Basic Research Oto Underground Lab. :  Oto Underground Lab. 1994 New underground lab. n & DM project start. 1994 – 1995 survey of new underground lab. 1995 Select Oto and proposal. 1996 Start construction Grant COE lab. 1997 Commencement of Oto Lab. Improve EL V and set at Oto. 1998 EL V starts run at Oto 1999 EL IV starts run at Oto MOON 2000 MOON project, MOON R&D Yamada award 2001, 2003 MOON 1 Proto-type Government Grant A. CANDLES 2002 R&D and Government Grant A. References:  References Nuclear responses for neutrinos. Review H.Ejiri, Phys. Rep. 338 (2000) 265. GR and bb, solar & sn n’s H.Ejiri, Nucl. Phys. A 687 (2001) 350c LI reactions. 3He H.Ejiri, et al. PLB 433 (1998) 257. 11B,11Li H. Ejiri, K. Takahisa, et al., 1997, 2001. Double beta decays and neutrinos. bb EL V H.Ejiri, N.Kudomi, et al., Phys. Rev. C 63 (2001) 65501 Review H.Ejiri, Nucl. Phys.B 91 (2001) 255, v2000 proc MOON bb and solar n H.Ejiri, J.Engel, G.Hazama, P.Krastev, N.Kudomi, R.G.H.Robertson, Phys, Rev. Lett.,85 (2000) 2917 Supernova n H.Ejiri, J.Engel, N.Kudomi, PL B530 (2002) 27 http://www.rcnp.osak-u.ac.jp/~ejiri/PUB.html Slide25:  We would express our cordial thanks to Oto & Nishiyoshino villages & the chiefs, Mr T. Kitamura & Mr S.Nakagaki, for the great and timely support for construction of the new lab. National Railway Corporation for transfer of the tunnel to the two villages to be used for our underground lab. Japanese people for their great contributions. Toray, Takeda, and Yamada S.F.for their timely awards/suports. Thank you for attension:  Thank you for attension . Slide27:  Here we would like to express our cordial thanks to The distinguished chief of Oto, Mr. Toshihiro. Kitamura for great, timely , & crucial supports for our science projects.

Add a comment

Related presentations

Related pages

H. Ejiri - academic.research.microsoft.com

H. Ejiri,Osaka University,Nuclear Physics,Statistical Physics,Astrophysics & Space Science
Read more

Hiroyasu Ejiri (Osaka University, Suita) on ResearchGate ...

Hiroyasu Ejiri of Osaka University, Suita with expertise in Nuclear Physics, Elementary Particle Physics, Experimental Physics is on ResearchGate. Read 463 ...
Read more

Hiroyasu Ejiri - academic.research.microsoft.com

Hiroyasu Ejiri,Osaka University,Nuclear Physics,Statistical Physics,Electrical & Electronic Engineering
Read more

Quark Lepton Nuclear Physics: H Ejiri: Amazon.com: Books

Buy Quark Lepton Nuclear Physics on Amazon.com FREE SHIPPING on qualified orders
Read more

CiteSeerX

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): ... @MISC{Ejiri01, author = {H Ejiri}, title = {}, year = {2001}}
Read more

Gamma-Ray and Electron Spectroscopy in Nuclear Physics ...

H. Ejiri (Author) › Visit Amazon's H. Ejiri Page. Find all the books, read about the author, and more. See search results for this author ...
Read more

Neutrinostudiesinnucleiandintenseneutrinosources

H. Ejiri / Nuclear Instruments and Methods in Physics Research A 503 (2003) 276–278 277. neutrino probe gives ambiguously pure spin ...
Read more

Nuclear responses for double-beta decays by hadron, photon ...

Nuclear responses for double-beta decays by hadron, photon, and neutrino probes and MOON experiment. ... H. Ejiri et al.: Phys. Rev. lett. 21 (1968) 373. H.
Read more

Oalib search

H. Ejiri,Ch. C. Moustakidis,J. D. Vergados Physics , 2005, DOI: 10.1016/j.physletb.2006.03.037. Abstract: It is shown that weakly ...
Read more

Nuclear Beta Decays and the Neutrino: Proceedings of the ...

T. Kotani, H. - Nuclear Beta Decays and the Neutrino: Proceedings of the International Symposium Osaka jetzt kaufen. ISBN: 9789971501648, Fremdsprachige ...
Read more