Development of direction sensitive dark matter detectors using anisotropic inorganic crystal scintillators
| Project/Area Number |
15K13478
|
|---|
| Research Category |
Grant-in-Aid for Challenging Exploratory Research
|
| Allocation Type | Multi-year Fund |
|---|
| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
|
|---|
| Research Institution | The University of Tokyo |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
吉川 彰 東北大学, 金属材料研究所, 教授 (50292264)
黒澤 俊介 東北大学, 未来科学技術共同研究センター, 准教授 (80613637)
|
|---|
| Research Collaborator |
PEDERSEN Juan William
ICHIMURA Kouichi
|
|---|
| Project Period (FY) |
2015-04-01 – 2019-03-31
|
| Project Status |
Completed (Fiscal Year 2018)
|
| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
|
|---|
| Keywords | 暗黒物質 / シンチレータ / 素粒子実験 / 宇宙線 / 方向感度 / シンチレーター |
|---|
| Outline of Final Research Achievements |
In order to verify the existence of the dark matter directly, it is indispensable to identify the incident direction of the dark matter due to the galaxy rotation. Up until today, most of such detectors are developed using gaseous TPCs, however mass of those detectors are limited because the target materials are gases. Therefore, to utilize higher density material target, a direction-sensitive ZnWO4 crystalline scintillator has been manufactured and calibrated not only with alpha particles but also by neutrons. The anisotropic response for neutrons has been successfully confirmed and it is confirmed that this crystal should work as a direction-sensitive dark matter detector.
|
| Academic Significance and Societal Importance of the Research Achievements |
現在の宇宙の成り立ちの秘密を探るには、宇宙の物質の約80％を占める暗黒物質を検出しその性質を明らかにすることが不可欠である。暗黒物質がなければ宇宙、地球、太陽、生命が生まれていなかったことは明白であるが、暗黒物質そのものは全く正体不明であり、世界中で探索が行われているが未検出である。本研究では、暗黒物質検出のためのブレークスルーとなる方向に感度をもった検出器の原理検証を行った。地球が銀河の中を回転しながら白鳥座の方に進行している事実から、地球上では暗黒物質の風を感じるははずであり、この風を捉える新たな手法を提案した。
|
Report
(5 results)
Research Products
(26 results)
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Status of making ZnWO4 Crystals2016
Author(s)
Hiroyuki Sekiya
Organizer
CYGNUS-TPC kick-off meeting
Place of Presentation
Laboratori Nazionali di Frascati, Frascati, Italy
Year and Date
2016-04-07
Related Report
Int'l Joint Research / Invited
-
-
-
[Presentation] ZnWO42015
Author(s)
Hiroyuki Sekiya
Organizer
The fifth CYGNUS workshop on directional dark matter detection (CYGNUS2015)
Place of Presentation
Occidental college, L.A. (USA)
Year and Date
2015-06-02
Related Report
Int'l Joint Research / Invited
-
-
