MIXING CHAMBER: Difference between revisions
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There is a radiation shield screwed on the upper part of the mixing chamber to prevent parasitic heating of the copper-stage based on thermal radiation emitted by the still shield (700mK). Two coils made of copper wire are mounted on the mixing chamber shield at the level of experimental platform of the first and of the second nuclear stage. But until now their meaning is not clear. |
There is a radiation shield screwed on the upper part of the mixing chamber to prevent parasitic heating of the copper-stage based on thermal radiation emitted by the still shield (700mK). Two coils made of copper wire are mounted on the mixing chamber shield at the level of experimental platform of the first and of the second nuclear stage. But until now their meaning is not clear. |
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* R<sub>coil</sub>=2.96k{{O}} at RT, directly measured -without filter box. |
* R<sub>coil</sub>=2.96k{{O}} at RT, directly measured -without filter box. |
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* Connected to heat sink [[PINBAR#BAR D|D]] (15/16). |
* Connected to heat sink [[PINBAR#BAR D|D]] (15/16) X9:(2/3). |
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* At 4.2K and through filter box R<sub>coil</sub>=4.9k{{O}} (R<sub>filter</sub>~100{{O}}). |
* At 4.2K and through filter box R<sub>coil</sub>=4.9k{{O}} (R<sub>filter</sub>~100{{O}}). |
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Revision as of 06:45, 28 November 2011
MIXING CHAMBER
The mixing chamber consists of two parts made of pure copper.
- Details:
- Volume: RMC=??? cmĀ³.
- Heater: RMC=440.
- Cooling power: see here.
Mixing Chamber Heater
File:MC heater.jpg
MC Heater.
- The mixing chamber heater is connected with BOX II X2:(1/4)(I),(2/3)(U).
- RMC=440 .
Mixing Chamber Shield
There is a radiation shield screwed on the upper part of the mixing chamber to prevent parasitic heating of the copper-stage based on thermal radiation emitted by the still shield (700mK). Two coils made of copper wire are mounted on the mixing chamber shield at the level of experimental platform of the first and of the second nuclear stage. But until now their meaning is not clear.
- Rcoil=2.96k at RT, directly measured -without filter box.
- Connected to heat sink D (15/16) X9:(2/3).
- At 4.2K and through filter box Rcoil=4.9k (Rfilter~100).
