{"id":2536,"date":"2009-05-01T21:10:21","date_gmt":"2009-05-01T21:10:21","guid":{"rendered":"http:\/\/casgroups.case.edu\/physics-senior-projects\/?p=2536"},"modified":"2016-06-20T14:32:20","modified_gmt":"2016-06-20T14:32:20","slug":"system-for-radon-assay-of-water","status":"publish","type":"post","link":"https:\/\/casgroups.case.edu\/physics-senior-projects\/system-for-radon-assay-of-water\/","title":{"rendered":"System for Radon Assay of Water"},"content":{"rendered":"

Sashank Karri with Tom Shutt<\/h3>\n

System for Radon Assay of Water<\/a><\/h3>\n

Observations such as galaxy rotation curves, orbital motions of galaxy clusters, and gravitational lensing in the light of Newton\u2019s law of gravity and general relativity overwhelmingly suggest that much of the matter in the universe is invisible.\u00a0 This dark<\/em> matter is theorized to be a massive particle that interacts with regular baryonic matter via only the gravitational and weak force (WIMP).\u00a0 Due to the nature of the weak force, the probability (should I use cross section?) of a WIMP interacting with baryonic particle is very small, making the search for this particle a challenging experiment.\u00a0 Furthermore, WIMP detector sensitivities to smaller cross sections of WIMP events are limited by the background in the detector.\u00a0 The LUX Dark Matter Experiment addresses these challenges by creating a large volume detector, which increases the fiducial volume and thus increasing the probability of a wimp interacting in the detector.\u00a0\u00a0 Another method to increase the fiducial volume, water shielding, is used to reduce background events such cosmic rays, hot neutrons, gamma rays, and other radioactive events from reaching the detector.\u00a0 Unfortunately, water can be a source of radiation, since it usually has some concentration of radon.\u00a0 Thus steps are taken to purify water this radon.\u00a0 After this, it is necessary to determine the remaining concentration of radon in the water in order to assess the background.\u00a0 I will be constructing a new system for the radon assay of water in the framework of the LUX Dark Matter experiment.\u00a0 The technique is based on separating radon from the water using a hydrophobic membrane stripping technology and subsequently after purification concentrating it in a carbon trap before sweeping it into an emanation chamber that counts the alpha decays.\u00a0 The target sensitivity for this system is 1 mBq\/m3.<\/p>\n","protected":false},"excerpt":{"rendered":"

Sashank Karri with Tom ShuttSystem for Radon Assay of Water<\/a><\/p>\n

Observations such as galaxy rotation curves, orbital motions of galaxy clusters, and gravitational lensing in the light of Newton\u2019s law of gravity and general relativity overwhelmingly suggest that much of the matter in the universe is invisible.\u00a0 This dark<\/em> matter is theorized to be a massive particle that interacts with regular baryonic matter via only the gravitational and weak force (WIMP).\u00a0 Due to the nature of the weak force, the probability (should I use cross section?) of a WIMP interacting with baryonic particle is very small,<\/p>\n

Continue reading… System for Radon Assay of Water<\/span><\/a><\/p>\n","protected":false},"author":19,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":""},"categories":[81,41],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/posts\/2536"}],"collection":[{"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/users\/19"}],"replies":[{"embeddable":true,"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/comments?post=2536"}],"version-history":[{"count":2,"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/posts\/2536\/revisions"}],"predecessor-version":[{"id":2728,"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/posts\/2536\/revisions\/2728"}],"wp:attachment":[{"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/media?parent=2536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/categories?post=2536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casgroups.case.edu\/physics-senior-projects\/wp-json\/wp\/v2\/tags?post=2536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}