Difference between revisions of "June, 11, 2007 Cosmic Ray measurements using HpGe Detector"
Jump to navigation
Jump to search
Line 1: | Line 1: | ||
− | Two 30 minute long measurements were taken using the high purity Germanium detector. Although these measuements are categorized as Cosmic Ray measurements, they are really measurements of all backgrounds which the HpGe detector sees. | + | Two 30 minute long measurements were taken using the high purity Germanium detector. Although these measuements are categorized as Cosmic Ray measurements, they are really measurements of all backgrounds which the HpGe detector sees.<br/> |
[[Image:CosmicOverlay.gif]] | [[Image:CosmicOverlay.gif]] | ||
The Black histogram represents the rates observed WITHOUT the lead shielding plate and the Red cure is what happens when a 1" thick lead plate is placed on top of the Ge detector to shield cosmics. The integrated rate changes from 253 to 138 thousand events/day. Low energy events are clearly attenuated more. A peak at around 1.415 MeV is dimished as well and a new peak arrises at 1.450 MeV. | The Black histogram represents the rates observed WITHOUT the lead shielding plate and the Red cure is what happens when a 1" thick lead plate is placed on top of the Ge detector to shield cosmics. The integrated rate changes from 253 to 138 thousand events/day. Low energy events are clearly attenuated more. A peak at around 1.415 MeV is dimished as well and a new peak arrises at 1.450 MeV. |
Revision as of 18:00, 14 June 2007
Two 30 minute long measurements were taken using the high purity Germanium detector. Although these measuements are categorized as Cosmic Ray measurements, they are really measurements of all backgrounds which the HpGe detector sees.
The Black histogram represents the rates observed WITHOUT the lead shielding plate and the Red cure is what happens when a 1" thick lead plate is placed on top of the Ge detector to shield cosmics. The integrated rate changes from 253 to 138 thousand events/day. Low energy events are clearly attenuated more. A peak at around 1.415 MeV is dimished as well and a new peak arrises at 1.450 MeV.