fizxlab CC Pictures 12 16 08 10 05 PM CC Pictures Laying out bottom of plate for attachment of hard drive cooler Scribe marks on hard drive cooler for placement of two thermoelectric units This type arrangement found to be ineffectual because the large surface area leaks heat back to the aluminum plate https fizxlab wikispaces com CC Pictures f print Page 1 of 15 fizxlab CC Pictures 12 16 08 10 05 PM Opposite side of the hard drive cooler Two sets of cooler holes The first arrangement allowed for only two thermoelectric units Four units were found to be necessary to quickly bring the chamber to operating temperature This second configuration was unsuccessful because heat leaked from the relatively large hard drive cooler to the black aluminum plate Imagine two thermoelectric units under each side https fizxlab wikispaces com CC Pictures f print Page 2 of 15 fizxlab CC Pictures 12 16 08 10 05 PM Magnetic field mapping board This provided a way to measure the field 3 8 above the plate Great Stuff insulation form fitted to the plate Because this did not fill the tiny gaps around the components mounted to the plate this idea was abandoned https fizxlab wikispaces com CC Pictures f print Page 3 of 15 fizxlab CC Pictures 12 16 08 10 05 PM Prototype chamber used to determine optimal height for temperature gradient Magnetic field mapping at plate level Combination plate cooling system and insulation This prototype was abandoned https fizxlab wikispaces com CC Pictures f print Page 4 of 15 fizxlab CC Pictures 12 16 08 10 05 PM Hard styrofoam insulation used for siding homes Thermal cutter provided for perfect fit with magnet center and thermoelectric units The final configuration Each thermoelectric unit has its own water jacket that fits directly over the thermoelectric unit with no overlap https fizxlab wikispaces com CC Pictures f print Page 5 of 15 fizxlab CC Pictures 12 16 08 10 05 PM Successful test of the final configuration Note the temperature of 35 Celsius View of base with themocouples attached and power supplies in the backgound https fizxlab wikispaces com CC Pictures f print Page 6 of 15 fizxlab CC Pictures 12 16 08 10 05 PM Setup prepared for operation Note the ice bath to the left cloud chamber to the right and overhead light source behind the chamber View of the chamber from behind the overhead projector Note the folders on the overhead to provide a narrow beam Also note that the light is focused as a narrow band on the side of the chamber https fizxlab wikispaces com CC Pictures f print Page 7 of 15 fizxlab CC Pictures 12 16 08 10 05 PM Overhead light source Top view of the chamber Two 6 inch plastic rulers provide fiducial marks Inside of the copper water jacket This one was removed and taken apart because of a freeze failure https fizxlab wikispaces com CC Pictures f print Page 8 of 15 fizxlab CC Pictures 12 16 08 10 05 PM Inside the heat exchanger Note the lint build up on the right side Prototype chamber used to determine optimal height for temperature gradient Electrical and water access in the bottom of the chamber Note the incoming lines are insulated https fizxlab wikispaces com CC Pictures f print Page 9 of 15 fizxlab CC Pictures 12 16 08 10 05 PM Event captured with webcam Event captured with webcam Event captured with webcam https fizxlab wikispaces com CC Pictures f print Page 10 of 15 fizxlab CC Pictures 12 16 08 10 05 PM Modified computer case with power supplies inside Kill A Watt meter with plugged in power supply https fizxlab wikispaces com CC Pictures f print Page 11 of 15 fizxlab CC Pictures 12 16 08 10 05 PM GFCI switch turns on the four internal power supplies Inside the power unit case Note the four power supply units inside https fizxlab wikispaces com CC Pictures f print Page 12 of 15 fizxlab CC Pictures 12 16 08 10 05 PM Heavy duty banana clips provide the connection to the outside of the case The aluminum base of the chamber without the lexan cover Working at near freezing temperature can be hazardous The plastic was replaced with machined aluminum blocks for all four heat exchangers https fizxlab wikispaces com CC Pictures f print Page 13 of 15 fizxlab CC Pictures 12 16 08 10 05 PM Heat exchanger as it appears new from the box https fizxlab wikispaces com CC Pictures f print Page 14 of 15 fizxlab CC Pictures 12 16 08 10 05 PM Portions not contributed by visitors are Copyright 2008 Tangient LLC https fizxlab wikispaces com CC Pictures f print Page 15 of 15
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