论文信息 - Cryogenic cooling program in high heat load optics at the Advanced Photon Source

Cryogenic cooling program in high heat load optics at the Advanced Photon Source

This paper describes some of the aspects of the cryogenic optics program at the Advanced Photon Source (APS). A liquid-nitrogen-cooled, high-vacuum, double crystal monochromator is being fabricated at Argonne National Laboratory (ANL). A pumping system capable of delivering a variable flow rate of up to 10 gallons per minute of pressurized liquid nitrogen and removing 5 kilowatts of x-ray power is also being constructed. This specialized pumping system and monochromator will be used to test the viability of cryogenically cooled, high- heat-load synchrotron optics. It has been determined that heat transfer enhancement will be required for optics used with APS insertion devices. An analysis of a porous-matrix-enhanced monochromator crystal is presented. For the particular case investigated, a heat transfer enhancement factor of 5 to 6 was calculated.

C. S. Rogers

[1] E. Schmitt,et al. Microchannel water cooling of silicon x‐ray monochromator crystals , 1992 .

[2] D. C. Wadsworth,et al. Enhancement of Single-Phase Heat Transfer and Critical Heat Flux From an Ultra-High-Flux Simulated Microelectronic Heat Source to a Rectangular Impinging Jet of Dielectric Liquid , 1992 .

[3] Ali M. Khounsary. A novel monochromator for high heat load synchrotron x‐ray radiation , 1992 .

[4] E. B. Qvale,et al. Analytical and Experimental Studies of Compact Wire-Screen Heat Exchangers , 1971 .

[5] Donald H. Bilderback,et al. The potential of cryogenic silicon and germanium X-ray monochromators for use with large synchrotron heat loads , 1986 .

[6] T. Kuzay. Cryogenic cooling of x‐ray crystals using a porous matrix , 1992 .

[7] D. M. Mills,et al. High performance microchannel heat exchanger for cooling high heat load x-ray optical elements , 1992 .

[8] M. Hart,et al. Water jet cooled silicon monochromators , 1991 .

[9] J. Smith,et al. Boiling Heat Transfer to Liquid Helium , 1966 .

[10] T. Kuzay,et al. Functional description of APS beamline front ends , 1993 .

[11] A. Khounsary,et al. Enhanced heat transfer with metal wool filled tubes , 1990 .