東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

A study of nuclear recoil background...

Westerdale, Shawn S.

Linked to FindBook

Google Book

Amazon

博客來

A study of nuclear recoil backgrounds in dark matter detectors.

Record Type:	Electronic resources : Monograph/item
Title/Author:	A study of nuclear recoil backgrounds in dark matter detectors./
Author:	Westerdale, Shawn S.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
Description:	510 p.
Notes:	Source: Dissertation Abstracts International, Volume: 78-05(E), Section: B.
Contained By:	Dissertation Abstracts International78-05B(E).
Subject:	High energy physics. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10194842
ISBN:	9781369377699

A study of nuclear recoil backgrounds in dark matter detectors.
Westerdale, Shawn S.

A study of nuclear recoil backgrounds in dark matter detectors. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 510 p.

Source: Dissertation Abstracts International, Volume: 78-05(E), Section: B.

Thesis (Ph.D.)--Princeton University, 2016.

Despite the great success of the Standard Model of particle physics, a preponderance of astrophysical evidence suggests that it cannot explain most of the matter in the universe.

ISBN: 9781369377699Subjects--Topical Terms:

2144759
High energy physics.

A study of nuclear recoil backgrounds in dark matter detectors.
LDR:03316nmm a2200349 4500 001 2122551
005 20170922124925.5
008 180830s2016 ||||||||||||||||| ||eng d
020 $a 9781369377699
035 $a (MiAaPQ)AAI10194842
035 $a AAI10194842
040 $a MiAaPQ $c MiAaPQ
100 1 $a Westerdale, Shawn S. $3 3284522
245 1 2 $a A study of nuclear recoil backgrounds in dark matter detectors.
260 1 $a Ann Arbor : $b ProQuest Dissertations & Theses, $c 2016
300 $a 510 p.
500 $a Source: Dissertation Abstracts International, Volume: 78-05(E), Section: B.
500 $a Adviser: Frank P. Calaprice.
502 $a Thesis (Ph.D.)--Princeton University, 2016.
520 $a Despite the great success of the Standard Model of particle physics, a preponderance of astrophysical evidence suggests that it cannot explain most of the matter in the universe.
520 $a This so-called dark matter has eluded direct detection, though many theoretical extensions to the Standard Model predict the existence of particles with a mass on the 1--1000 GeV scale that interact only via the weak nuclear force. Particles in this class are referred to as Weakly Interacting Massive Particles (WIMPs), and their high masses and low scattering cross sections make them viable dark matter candidates. The rarity of WIMP-nucleus interactions makes them challenging to detect: any background can mask the signal they produce. Background rejection is therefore a major problem in dark matter detection.
520 $a Many experiments greatly reduce their backgrounds by employing techniques to reject electron recoils. However, nuclear recoil backgrounds, which produce signals similar to what we expect from WIMPs, remain problematic.
520 $a There are two primary sources of such backgrounds: surface backgrounds and neutron recoils. Surface backgrounds result from radioactivity on the inner surfaces of the detector sending recoiling nuclei into the detector. These backgrounds can be removed with fiducial cuts, at some cost to the experiment's exposure. In this dissertation we briefly discuss a novel technique for rejecting these events based on signals they make in the wavelength shifter coating on the inner surfaces of some detectors.
520 $a Neutron recoils result from neutrons scattering off of nuclei in the detector. These backgrounds may produce a signal identical to what we expect from WIMPs and are extensively discussed here. We additionally present a new tool for calculating (alpha, n) yields in various materials.
520 $a We introduce the concept of a neutron veto system designed to shield against, measure, and provide an anti-coincidence veto signal for background neutrons. We discuss the research and development that informed the design of the DarkSide-50 boron-loaded liquid scintillator neutron veto. We describe the specific implementation of this veto system in DarkSide-50, including a description of its performance, and show that it can reject neutrons with a high enough efficiency to allow DarkSide-50 to run background-free for three years.
590 $a School code: 0181.
650 4 $a High energy physics. $3 2144759
650 4 $a Nuclear physics and radiation. $3 3173793
690 $a 0798
690 $a 0756
710 2 $a Princeton University. $b Physics. $3 2101570
773 0 $t Dissertation Abstracts International $g 78-05B(E).
790 $a 0181
791 $a Ph.D.
792 $a 2016
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10194842