Thermal analysis of the crotch absorber in APS

I. C. Albert Sheng; Joseph W. Howell

doi:10.1117/12.140530

25 February 1993 Thermal analysis of the crotch absorber in APS

I. C. Albert Sheng, Joseph W. Howell

Proceedings Volume 1739, High Heat Flux Engineering; (1993) https://doi.org/10.1117/12.140530
Event: San Diego '92, 1992, San Diego, CA, United States

Abstract

A crotch absorber design for use in the Advanced Photon Source (APS) has been proposed and analyzed. The absorber is placed downstream of sectors S2 and S4 in the curved storage ring chamber and is subjected to a peak power of 120 W/mm² per 100 mA synchrotron radiation. A beryllium ring is brazed on the GlidCop cooling cylinder in order to diffuse the concentrated bending magnet heating. One concentric water channel and two annular return water channels are arranged in the GlidCop cylinder to enhance the cooling. A Bodner-Partom thermoviscoplastic constitutive equation and a modified Manson-Coffin fatigue relation are proposed to simulate the cyclic thermal loading, as well as to predict the thermal fatigue life of the crotch absorber. Results of temperature and stress using finite element computations are displayed and a series of e-beam welder tests and microstructure measurements are reported.

Citation Download Citation

I. C. Albert Sheng and Joseph W. Howell "Thermal analysis of the crotch absorber in APS", Proc. SPIE 1739, High Heat Flux Engineering, (25 February 1993); https://doi.org/10.1117/12.140530

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