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Chromatographic Separation of Krypton 85 From Xenon<br />
Large Underground Xenon (LUX) Detector<br />What is dark matter?<br />Direct detection of  Weakly Interacting Massive Part...
Large Underground Xenon (LUX) Detector<br />350 kg of Xenon must be purified<br />Heated getter technology removes contami...
Krypton Removal system<br />Carrier gas flows through the system (He)<br />Adsorption charcoal column (right)<br />Molecul...
Circulation system and Phases<br />1. Charge with Helium<br />2. Feed<br />3.Purge<br />4.Recovery<br />5. Condenser to St...
Krypton Removal Phases<br />
Krypton Scale Up<br />Storage and Recovery Vessel (SRV) to be used at the main condenser<br />Larger charcoal adsorber col...
Questions?<br />
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Megan Van Vleet Presentation

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Megan Van Vleet Presentation

  1. 1. Chromatographic Separation of Krypton 85 From Xenon<br />
  2. 2. Large Underground Xenon (LUX) Detector<br />What is dark matter?<br />Direct detection of Weakly Interacting Massive Particles (WIMPs) as the leading candidate for dark matter<br />Radioactive backgrounds must be reduced to detect WIMPs<br />
  3. 3. Large Underground Xenon (LUX) Detector<br />350 kg of Xenon must be purified<br />Heated getter technology removes contaminants except noble gases<br />Krypton 85: <br />Present in the air in small amounts<br />Present at ~5ppb in xenon<br />Goal &lt;5ppt in xenon<br />
  4. 4. Krypton Removal system<br />Carrier gas flows through the system (He)<br />Adsorption charcoal column (right)<br />Molecules attracted to the porous surface of adsorber<br />Adsorption constants differ; xenon and krypton separate<br />Existing charcoal column<br />
  5. 5. Circulation system and Phases<br />1. Charge with Helium<br />2. Feed<br />3.Purge<br />4.Recovery<br />5. Condenser to Storage<br />6. Kr Trap to Transfer Trap<br />T. Shutt 7/9/2009<br />
  6. 6.
  7. 7. Krypton Removal Phases<br />
  8. 8. Krypton Scale Up<br />Storage and Recovery Vessel (SRV) to be used at the main condenser<br />Larger charcoal adsorber column, with changed geometry (right)<br />
  9. 9. Questions?<br />

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