1 / 30

F.Suekane, Tohoku Univ. D. Motta, CEA

Nu_2-WP2: R&D of detectors for future high statistics, high precision experiment (R&D for reactor anti-neutrino experiments). In short: R&D for Reactor  13 experiments. F.Suekane, Tohoku Univ. D. Motta, CEA. Presenters. 2007.5.9 FJPPL Workshop @ KEK. Contents of this report.

kandicej
Download Presentation

F.Suekane, Tohoku Univ. D. Motta, CEA

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Nu_2-WP2:R&D of detectors for future high statistics, high precision experiment (R&D for reactor anti-neutrino experiments) In short: R&D for Reactor 13 experiments F.Suekane, Tohoku Univ. D. Motta, CEA Presenters 2007.5.9 FJPPL Workshop @ KEK FJPPL Suekane

  2. Contents of this report • General description of the Project • 2006 Activities in Japan • 2006 Activities in France by F.Suekane by D.Motta FJPPL Suekane

  3. 2006 FJPPL Members 5 from France 4 from Japan FJPPL Suekane

  4. 2006 Mission & Budget plan Exchange Information of KASKA and Double CHOOZ Travel expense: 2x （France <--> Japon） FJPPL Suekane

  5. from 2007 Proposal 5 from France 4 from Japan FJPPL Suekane

  6. 2007 Proposal Exchange information to proceed DC R&D Travel Expenses FJPPL Suekane

  7. Purpose of the experiments 2 out of 3  Oscilltions have been confirmed.  KamLAND Solar  experimens SuperKamikande K2K, MINOS e  Purpose: To find out the 3rd oscillation by Reactor  FJPPL Suekane

  8. 13Measurement by Reactor sin2213=0.1 E=4MeV KamLAND Normal Hierarchy Inverted Hierarchy Measure 13 at distance 1~2km from reactors FJPPL Suekane

  9. Far Detector (L~1km) Reactors ~1.5km Near Detector (L<500m) Reactor 13 Experiment • Measure Disappearance at a distance 1~2km • Small Oscillation Amplitude • => Precise measurement is necessary • => 2 detectors to cancel systematics • => Underground to reduce cosmic-ray backgrounds FJPPL Suekane

  10. Early 2006 KASKA & DoubleChooz Chooz Power Station Kashiwazaki-Kariwa Nuclear Power Station FJPPL Suekane

  11. Mass Measurement R&Ds were going in parallel DoubleChooz KASKA FJPPL Suekane

  12. 2006.9 KASKA Merged to DCHOOZ Japan side France side KASKA R&D Double Chooz R&D Merge 2006.9 The FJPPL fund was used for mutual visits to discuss how to unify the two projects. Double Chooz Construction FJPPL Suekane

  13. FJPPL Suekane

  14. Current limit sys=2.5% sys=0.6% Far detector only Far & Near detectors together 2009 2010 2011 2012 2013 2014 2012 08/2008 2009 FJPPL Suekane

  15. R&D in Japan before the Merge KASKA Prototype to study Gd signal to study BKG to observe reactor  0.9m3 Gd-LS FJPPL Suekane

  16. KASKA Prototype@Joyo research reactor Currently taking data KASKA prototype Fast Reactor Pth=140MW Frequent ON/OFF L~25m ~150 pen reaction/day 25m FJPPL Suekane

  17. 1pe signals PMT Hamamatsu 10"PMT TTS=2.5ns ~400/detector 13% coverage Low BKG Glass It is possible to make10"PMT glass as low BKG. FJPPL Suekane

  18. Gd-LS long term stability tests(preliminary) KASKA candidate T=20deg BC521 : Pseudocumen(PC) : Tetradecane(TD) = A ‥ 20% : 20% : 60% B ‥ 30% : 10% : 60% C ‥ 20% : 10% : 70% T=30deg No aging at room temp. for 240days T=40deg FJPPL Suekane

  19. Calibration: Wire manipulation (between PMTs) hook hook Source weight Mechanical Test Test at prototype (planning) FJPPL Suekane

  20. Designing WorkWith KEK Engineering Div. FJPPL Suekane

  21. 1/2 scale inner acrylic dorm. =90cm, t=1cm) -> manufacturing method. -> Test of achievable precision FJPPL Suekane

  22. Construction sequence FJPPL Suekane

  23. LoI: hep-ex/0607013 ~80 pages FJPPL Suekane

  24. ７ｍ After the Merge to DCHOOZ Take responsibility of PMT system PMT (~800) Teflon cable HV Electro- nics Divider Monitor Front-End Electronics FJPPL Suekane

  25. Completed Low-BG Oil-Proof PMT design FJPPL Suekane

  26. PMT testing box FJPPL Suekane

  27. PMT Delivery Box Ready to GO. FJPPL Suekane

  28. 2007 2008 2009 2011 2012 2013 1 1 1 2 2 2 3 3 3 4 4 4 5 5 5 6 6 6 7 7 7 8 8 8 9 9 9 O O O N N N D D D Activity in France Installation FAR data taking start FAR Installation Receive, test preparation NEAR data taking start NEAR Activity in Japan test test 400PMT production 400PMT production 2007 and Beyond FJPPL Suekane

  29. Next Speaker => Dario talks about French Activities in 2006 FJPPL Suekane

  30. Summary • * Now Japan and France projects have unified as • Double Chooz. • * Full proposal in 2006 (hep-ex/0606025) • * Material procurement underway • * 2007/08 is the DCHOOZ (Far det.) construction phase. • * The first data taking is expected to start in 2008 • and the first result is expected to come out in 2010. FJPPL Suekane

More Related