Promotion of the project for directional dark matter search with high resolution nuclear emulsion

2012 Fiscal Year Final Research Report

• Project/Area Number: 23840018
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Particle/Nuclear/Cosmic ray/Astro physics
• Research Institution: Nagoya University
• Principal Investigator: NAKA Tatsuhiro 名古屋大学, 高等研究院(現), 特任助教 (00608888)
• Project Period (FY): 2011 – 2012
• Keywords: 暗黒物質 / 高分解能原子核乾板

Research Abstract

This research is for directional dark matter searchwith the detector which can work as large mass detector. To do that, we proposed the very high resolution nuclear emulsion, and started R&D of the technology. In this subject, representative of this research promoted the project by being central figure and advanced the practical application. In terms of development of detector itself, we succeeded the micronization to 20 nm sizes for silver halide crystals constituting the nuclear emulsion, and its technology enabled more stable production under various conditions in production processes. Also, automatic read-out system based on optical microscope was constructed, and the submicron tracks expected as dark matter signal could be read out automatically. This system demonstrated by neutron recoil signal. Simultaneously, we developedthe X-ray microscope system for final confirmation of candidate signals in SPring-8, and this system was turned into the practical use.By these R&D, we constructed the procession of system from detector production to data analysis, and we can go to the phase of test run.

Research Products

• [Journal Article] R&D Status of Nuclear Emulsion for Directional Dark Matter Search (2012)
  • Author(s): T. Naka, M. Kimura, M. Nakamura, O. Sato, T. Nakano, T. Asada, Y. Tawara and Y. Suzuki
  • Journal Title: EAS Publication Series Volume: Vol. 53 Pages: 51-58
• [Journal Article] Submicron track readout in fine-grained nuclear emulsions under optical microscopy (2012)
  • Author(s): K. Kimura and T. Naka
  • Journal Title: NIM A Volume: 680 Pages: 12-17
  • Peer Reviewed
• [Journal Article] Fast neutron detection under intense gamma-ray fields with novel nuclear emulsion technique (2012)
  • Author(s): K. Ishihara , K. Takagi , H. Minato , J. Kawarabayashi , H. Tomita , S. Maeda , T. Naka , K. Morishima , T. Nakano , M. Nakamura , T. Iguchi
  • Journal Title: Rad. Meas. Volume: RM4855_proof Pages: 1-4
  • Peer Reviewed
• [Journal Article] Isospin Violating Dark Matter Search by Nuclear Emulsion Detector (2012)
  • Author(s): K. Nagao and T. Naka
  • Journal Title: Progress of Theoretical and Experimental Physics Pages: 1211-022
  • Peer Reviewed
• [Journal Article] Fine Grained Nuclear Emulsion for Higher Resolution Tracking Detector
  • Author(s): T. Naka, T. Asada, T. Katsuragawa, K. Hakamata, M. Yoshimoto, K. Kuwabara, M. Nakamura, O. Sato, T. Nakano, Y.Tawara, G. De Lellis, C. Sirignano, N. D'Ambrossio
  • Journal Title: NIMA Volume: 55089
  • DOI: DOI:10.1016/j.nima.2012.11.106
  • Peer Reviewed
• [Presentation] エマルジョン暗黒物質方向性探索実験における開発状況(2)～全体報告～ (2013)
  • Author(s): 中 竜大 他、
  • Organizer: 日本物理学会年次大会
  • Place of Presentation: 広島大
  • Year and Date: 20130326-29
• [Presentation] Directional Dark Matter with Nuclear Emulsion (2013)
  • Author(s): Tatsuhiro Naka
  • Place of Presentation: SLAC, USA
  • Year and Date: 2013-03-07
• [Presentation] Directional Dark Matter Search Project with Very High Resolution Nuclear Emulsion (2013)
  • Author(s): Tatsuhiro Naka
  • Place of Presentation: University of Bern, Switzerland
  • Year and Date: 2013-01-16
• [Presentation] Directional Dark Matter Search with Nuclear Emulsion (2012)
  • Author(s): Tatsuhiro Naka
  • Organizer: IDM2012 conference
  • Place of Presentation: Chicago, USA
  • Year and Date: 2012-07-24
• [Presentation] Directional Dark Matter Seach with Nulcear emulsion (2011)
  • Author(s): T. Naka
  • Organizer: IDPASC dark matter work shop
  • Place of Presentation: Evora, Portugal
  • Year and Date: 20111217-18
• [Presentation] R&D Status of Nuclear Emulsion for Directional Dark Matter Search (2011)
  • Author(s): T. Naka, M. Kimura, T. Aasada, M. Nakamura, T. Nakano, O. Sato, Y. Tawara, Y. Suzuki
  • Organizer: CYGNUS2011 conference
  • Place of Presentation: Aussois ,France
  • Year and Date: 20110608-11
• [Presentation] Directional Dark Matter Seach with Nulcear emulsion (2011)
  • Author(s): Tatsuhiro Naka
  • Organizer: Invitation Seminar at Padova University
  • Place of Presentation: Padova University,Italy
  • Year and Date: 2011-12-15