DM - LArTPC DocDB - Fermilab

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Materials Test Stand Summary Filter Materials: Industrial filter materials are capable of removing all electronegative materials (water, oxygen)and producing liquid with >10 milliseconds lifetime. Data on filter capacity at our requirements are sparse; Filters can be regenerated many times; we know how - using non-flammable Ar-H mix Materials: Materials immersed in the liquid have no effect on lifetime; Materials immersed in warm gas volume above the argon have: no effect on lifetime if the argon is venting at a certain rate; significant effect if the warm gas mixes with the liquid argon directly; metal surfaces outgas water vapor at significant rate and ... see above Contaminants: Absent leaks, water is the main concern; it comes from detector materials and the cryostat walls in the warm gas. `A system to test the effects of materials on the electron drift lifetime in liquid argon and observations on the effect of water’ R. Andrews et al., Nucl.Instrum.Meth.A608:251-258,2009. 14 <strong>Fermilab</strong> Institutional Review, June 6-9, 2011
LAr TPC Electronics Test Stand MSU Electronics & DAQ 1 st LAr TPC with U.S. electronics readout 50 cm vertical drift TPC HV 20 - 30 kV 3 planes of wires at 120 0 FNAL TPC HV Feedthrough Argon 15 <strong>Fermilab</strong> Institutional Review, June 6-9, 2011
Page 1 and 2: Work on Liquid Argon at Fermilab St
Page 3 and 4: Introduction Liquid Argon - Why Liq
Page 5 and 6: Introduction - Some Context (2) Ins
Page 7 and 8: Introduction Neutrino & Dark Matter
Page 9 and 10: Facilities - Schematic of Materials
Page 11 and 12: Measurement Features of Material
Page 13: Materials Test Stand Typical data S
Page 17 and 18: Example of use of TPC data - for el
Page 19 and 20: 1 st in-liquid CMOS electronics on
Page 21 and 22: ArgoNeuT-T962: LArTPC exposed to Nu
Page 23 and 24: Achieving good lifetime in an uneva
Page 25 and 26: Some steps on the path to the LBNE
Page 27 and 28: First steps with the Membrane Techn
Page 29 and 30: Light Readout R & D (M.I.T & Indian
Page 31 and 32: Distillation Column Design and Real
Page 33 and 34: One Slide on Software It is recogni
Page 35 and 36: Conclusions Vigorous and broad rang
Page 37 and 38: Introduction Neutrino & Dark Matter

DM - LArTPC DocDB - Fermilab

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