ABOVEGROUND OBSERVATION OF DARK MATTER USING A CRYOGENIC PARTICLE DETECTOR
使用低温粒子探测器对暗物质进行地面观测
基本信息
- 批准号:07640420
- 负责人:
- 金额:$ 1.22万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (C)
- 财政年份:1995
- 资助国家:日本
- 起止时间:1995 至 1996
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
By using a cryogenic detector with the target composed of about 344,000 tinmicrospheres of 0.0354g weight (in 30 micron diameter each), we have carried out a preliminary observation of dark-matter candidate particles in cosmic rays. It was performed at the temperature of 30mK and the applied field of 326 Gauss by use of the signal-readout system with a damped resonance circuit (the resonant frequency of about 1 MHz).By analysing the temporal spacings of signals and the pulse height, we confirmed what follows :(1) When an incident particle causes multiple spheres flip at a time, it is a charged cosmic one with certainty. For a single transition signal, however, we are unable to infer it whether due to the usual cosmic ray or a dark-matter particle without taking an event-coincidence procedure.(2) For the 5-micron variance of the size of the tin spheres used the super-heating superconducting field varies widely from 250 to 400G at 30mK,which reduces the effective mass of the target. The precision of the diameter within 1 micron is desired for the narrower allowance of the field.(3) The uniform distribution of the microspheres in the filling stuff is also critically important. A transition of a single sphere, one of the target ones in close vicinity each other, may trigger the nearest neighbor one and the chain reaction occurs successively. Provided that the first transition has owed to the very dark-matter particle, the resultant chain reaction is inferred to be caused by a charged particle.In conclusion, the particle detector based on the phase transition of the superheated superconducting spheres has some issues yet to overcome, the precise selection of the sphere size, the progress of the readout system with a higher sensitivity and the target of unifomly distributed spheres.
我们用一个由344,000个重0.0354克的锡微球(每个直径30微米)组成的低温探测器对宇宙线中的暗物质候选粒子进行了初步观测。在温度30 mK,外加场326高斯的条件下,利用带有阻尼谐振电路(谐振频率约为1 MHz)的信号读出系统,通过对信号时间间隔和脉冲高度的分析,证实了:(1)当入射粒子同时引起多个球翻转时,它肯定是带电的宇宙粒子;然而,对于一个单一的跃迁信号,我们无法推断它是否是由于通常的宇宙射线或暗物质粒子,而不采取事件符合程序。(2)对于所使用的锡球的尺寸的5微米变化,在30 mK下,过热超导场从250 G变化到400 G,这降低了靶的有效质量。对于较窄的场容限,希望直径的精度在1微米以内。(3)微球在填料中的均匀分布也是至关重要的。一个球的跃迁,一个目标球彼此非常接近,可以触发最近的邻居,连锁反应发生连续。假设第一次跃迁是由暗物质粒子引起的,那么由此产生的链式反应是由带电粒子引起的。总之,基于过热超导球相变的粒子探测器还存在一些问题需要克服,如球尺寸的精确选择、更高灵敏度的读出系统的发展以及球的均匀分布等。
项目成果
期刊论文数量(10)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Takeo Ebisu: "On a Real-Time Measurement of a Deposit Energy through the Flip-Flop Process" Nucl.Instr.& Methods in PhysicsResearch A. 370. 14-16 (1996)
Takeo Ebisu:“通过触发器过程实时测量沉积能量”Nucl.Instr。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
中沢正治: "放射線センシングの発展と将来展望-ベクレルによる放射線発見から100年" 日本原子力学会誌. 38・9. 704-736 (1996)
Masaharu Nakazawa:“辐射传感的发展和未来前景 - 贝克勒尔发现辐射 100 周年”日本原子能学会杂志 38・9(1996 年)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
T. Ebisu: "On a real-time measurement of a deposit energy through the flip-flop process" Nuclear Instruments & Methods in Physics Research Section A. (in press). (1996)
T. Ebisu:“通过触发器过程实时测量沉积能量” Nuclear Instruments
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
Takeo EBISU: "R & D OF A LOW TWMPERATURE DETECTOR USING SUPERHEATED SUPER-CONDUCTING GRANULES (in Japanese)" JAERI-Conf, Japan Atomic Energy Research Institute. 96-004. 10-25 (1996)
惠比寿武夫:“R
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
中沢正治: "放射線センシングの発展と将来展望-ベクトルによる放射線発見から100年" 日本原子力学会誌. 38・9. 704-736 (1996)
Masaharu Nakazawa:“辐射传感的发展和未来展望 - 自矢量辐射发现以来的 100 年”日本原子能学会杂志 38・9(1996 年)。
- DOI:
- 发表时间:
- 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
WATANABE Tadashi其他文献
WATANABE Tadashi的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('WATANABE Tadashi', 18)}}的其他基金
Molecular machinery of viral pre-initiation complex in KSHV replication
KSHV复制中病毒前起始复合物的分子机制
- 批准号:
16K18925 - 财政年份:2016
- 资助金额:
$ 1.22万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
Analytical Chemical Study on the Mechanism of Photosynthetic Oxygen Evolution
光合释氧机理的分析化学研究
- 批准号:
22550146 - 财政年份:2010
- 资助金额:
$ 1.22万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Rotation and oscillation characteristics oflevitated droplet andin and outside flow fields
悬浮液滴及流场内外的旋转和振荡特性
- 批准号:
21560230 - 财政年份:2009
- 资助金额:
$ 1.22万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Measurement of Redox potentials of Functional Molecules in Photosystem Core Complexes
光系统核心复合物中功能分子氧化还原电位的测量
- 批准号:
19614003 - 财政年份:2007
- 资助金额:
$ 1.22万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Determination of the Functioning Site of Chlorophyll a' in the Photosynthetic Reaction Center I
光合反应中心I叶绿素a功能位点的测定
- 批准号:
12450343 - 财政年份:2000
- 资助金额:
$ 1.22万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Detection of neutrons in the low-temperature environment using superheated superconducting granules
利用过热超导颗粒探测低温环境中子
- 批准号:
09640360 - 财政年份:1997
- 资助金额:
$ 1.22万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Elucidation of the Molecular Properties of Chlorophyll a' and Its Function in Photosynthetic Reaction Centers
叶绿素a的分子性质及其在光合反应中心的功能的阐明
- 批准号:
08455391 - 财政年份:1996
- 资助金额:
$ 1.22万 - 项目类别:
Grant-in-Aid for Scientific Research (B)
Molecular-level Analysis for the Cyanobacterial Response of Heavy Metal Stress from Environment
蓝藻对环境重金属胁迫响应的分子水平分析
- 批准号:
05680457 - 财政年份:1993
- 资助金额:
$ 1.22万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
Radioimmunodetection of recurrence of colorectal cancer using monoclonal antibody
单克隆抗体放射免疫检测结直肠癌复发
- 批准号:
05671097 - 财政年份:1993
- 资助金额:
$ 1.22万 - 项目类别:
Grant-in-Aid for General Scientific Research (C)
SEARCH FOR DARK MATTER USING THE SUPERHEATED SUERCONDUCTOR
使用过热超导体搜索暗物质
- 批准号:
04452028 - 财政年份:1992
- 资助金额:
$ 1.22万 - 项目类别:
Grant-in-Aid for General Scientific Research (B)
相似海外基金
ARC Centre of Excellence for Dark Matter Particle Physics
ARC 暗物质粒子物理卓越中心
- 批准号:
CE200100008 - 财政年份:2020
- 资助金额:
$ 1.22万 - 项目类别:
ARC Centres of Excellence
Improvement of a liquid xenon detector for low threshold and high accuracy and search for anual modulation signals caused by dark matter particle using the detector
低阈值高精度液态氙探测器的改进及利用该探测器搜索暗物质粒子引起的模拟调制信号
- 批准号:
25800132 - 财政年份:2013
- 资助金额:
$ 1.22万 - 项目类别:
Grant-in-Aid for Young Scientists (B)
Dark matter particle physics and the first sources of light in the universe
暗物质粒子物理学和宇宙中第一个光源
- 批准号:
DE120101859 - 财政年份:2012
- 资助金额:
$ 1.22万 - 项目类别:
Discovery Early Career Researcher Award
Constraining the fundamental properties of the dark matter particle
限制暗物质粒子的基本属性
- 批准号:
204228989 - 财政年份:2011
- 资助金额:
$ 1.22万 - 项目类别:
Research Grants
Development of liquid argon experiment for direct dark matter particle search DEAP
直接暗物质粒子搜索的液氩实验进展 DEAP
- 批准号:
327126-2006 - 财政年份:2007
- 资助金额:
$ 1.22万 - 项目类别:
Subatomic Physics Envelope - Individual
Development of liquid argon experiment for direct dark matter particle search DEAP
直接暗物质粒子搜索的液氩实验进展 DEAP
- 批准号:
327126-2006 - 财政年份:2006
- 资助金额:
$ 1.22万 - 项目类别:
Subatomic Physics Envelope - Individual