The Cooling of a Liquid Absorber using a Small Cooler

Baynham, D.E.; Bradshaw, T.; Green, M. A.; Ishimoto, S.; Liggins, N.

doi:10.1063/1.2202522

Cited by 3 publications

(3 citation statements)

References 3 publications

(2 reference statements)

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“…This means that heat must be applied to the second stage cold head in order to control the absorber temperature. The heat that goes into a well-insulated MICE absorber is of the order of 1 to 1.5 watts [13]. (A heat leak of 2 W is the worst case that one can stand over an indefinite period of time.)…”

Section: Liquid Absorbers Prediction Of the Density Of The Fluid In mentioning

confidence: 99%

Does One Know the Properties of a MICE Solid or Liquid Absorber toBetter than 0.3 Percent?

Green¹,

Yang²

2006

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This report discusses the report discusses whether the MICE absorbers can be characterized to ±0.3 percent, so that one predict absorber ionization cooling within the absorber. This report shows that most solid absorbers can be characterized to much better than ±0.3 percent. The two issues that dominate the characterization of the liquid cryogen absorbers are the dimensions of the liquid in the vessel and the density of the cryogenic liquid. The thickness of the window also plays a role. This report will show that a liquid hydrogen absorber can be characterized to better than ±0.3 percent, but a liquid helium absorber cannot be characterized to better and ±1 percent.

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Section: Liquid Absorbers Prediction Of the Density Of The Fluid In mentioning

confidence: 99%

Does One Know the Properties of a MICE Solid or Liquid Absorber toBetter than 0.3 Percent?

Green¹,

Yang²

2006

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“…The vacuum around a liquid absorber is separate from the magnet vacuum or the MICE vacuum. The absorber 4-K cooler [2] and two 4-K magnet coolers [7] are also mounted on the top of the AFC module, which is between two RFCC modules or between an RFCC module and a tracker module ( See FIG. 1).…”

Section: The Absorber Focus Coil Modulementioning

confidence: 99%

A Liquid Cryogen Absorber for Mice

Baynham¹,

Bish²,

Bradshaw³

et al. 2006

AIP Conference Proceedings

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“…The three focusing modules each contain a liquid hydrogen absorber [4] that is cooled using a single PT415 cooler that generates about 20 W of cooling at 20 K. The absorber cooler will be connected to the absorber through a hydrogen thermal siphon circuit [5]. It is hoped that the cooler will liquefy hydrogen into the absorber.…”

Section: Introductionmentioning

confidence: 99%

Re-Condensation and Liquefaction of Helium and Hydrogen Using Coolers

Green¹,

Weisend²

2010

AIP Conference Proceedings

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A helium liquefier using three 4 k pulse tube cryocoolers AIP Conference Proceedings 1434, 1640 (2012); 10.1063/1.4707096 RE-CONDENSATION AND LIQUEFACTION OF HELIUM AND HYDROGEN USING COOLERS M. A. GreenLawrence Berkeley National Laboratory Berkeley CA 94720, USA ABSTRACTCoolers are used to cool cryogen free devices at temperatures from 5 to 30 K. Cryogen free cooling involves a temperature drop within the device being cooled and between the device and the cooler cold heads. Liquid cooling with a liquid cryogen distributed over the surface of a device combined with re-condensation can result in a much lower temperature drop between the cooler and the device being cooled. The next logical step beyond simple re-condensation is using a cooler to liquefy the liquid cryogen in the device. A number of tests of helium liquefaction and re-condensation of helium have been run using a pulse tube cooler in the drop-in mode. This report discusses the parameter space over which re-condensation and liquefaction for helium and hydrogen can occur.

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The Cooling of a Liquid Absorber using a Small Cooler

Cited by 3 publications

References 3 publications

Does One Know the Properties of a MICE Solid or Liquid Absorber toBetter than 0.3 Percent?

Does One Know the Properties of a MICE Solid or Liquid Absorber toBetter than 0.3 Percent?

A Liquid Cryogen Absorber for Mice

Re-Condensation and Liquefaction of Helium and Hydrogen Using Coolers

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