Synchrotron white beam thermal loading on polycapillary X-ray optics

B. K. Rath; F. B. Hagelberg; B. E. Homan; C. A. MacDonald

doi:10.1016/S0168-9002(97)00980-7

Synchrotron white beam thermal loading on polycapillary X-ray optics

B. K. Rath
, F. B. Hagelberg
, B. E. Homan
, C. A. MacDonald

Physics

University at Albany

SUNY Albany
X-Ray optical system Inc.

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Measurements and calculations have been performed of thermal loading effects on polycapillary X-ray optics due to synchrotron bending magnet white-beam exposure. Steady-state temperature increases of up to 190°C at the input end of the optic have been measured during exposure to a beam intensity of 11 W/cm²; extended exposure at these intensities produces little or no performance degradation. Time to reach steady-state thermal equilibrium after exposure to the X-ray beam has been found to be of the order of 1 min. Theoretical modeling of thermal behavior agrees with experiment. Theoretical modeling predicts that slight misalignment of the optic will not affect the thermal load. A substantial decrease in the temperature rise is expected if the air atmosphere is replaced with helium or if air flow is maintained over the optic.

Original language	English
Pages (from-to)	421-428
Number of pages	8
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	401
Issue number	2-3
DOIs	https://doi.org/10.1016/S0168-9002(97)00980-7
State	Published - Dec 21 1997

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title = "Synchrotron white beam thermal loading on polycapillary X-ray optics",

abstract = "Measurements and calculations have been performed of thermal loading effects on polycapillary X-ray optics due to synchrotron bending magnet white-beam exposure. Steady-state temperature increases of up to 190°C at the input end of the optic have been measured during exposure to a beam intensity of 11 W/cm2; extended exposure at these intensities produces little or no performance degradation. Time to reach steady-state thermal equilibrium after exposure to the X-ray beam has been found to be of the order of 1 min. Theoretical modeling of thermal behavior agrees with experiment. Theoretical modeling predicts that slight misalignment of the optic will not affect the thermal load. A substantial decrease in the temperature rise is expected if the air atmosphere is replaced with helium or if air flow is maintained over the optic.",

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year = "1997",

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doi = "10.1016/S0168-9002(97)00980-7",

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TY - JOUR

T1 - Synchrotron white beam thermal loading on polycapillary X-ray optics

AU - Rath, B. K.

AU - Hagelberg, F. B.

AU - Homan, B. E.

AU - MacDonald, C. A.

PY - 1997/12/21

Y1 - 1997/12/21

N2 - Measurements and calculations have been performed of thermal loading effects on polycapillary X-ray optics due to synchrotron bending magnet white-beam exposure. Steady-state temperature increases of up to 190°C at the input end of the optic have been measured during exposure to a beam intensity of 11 W/cm2; extended exposure at these intensities produces little or no performance degradation. Time to reach steady-state thermal equilibrium after exposure to the X-ray beam has been found to be of the order of 1 min. Theoretical modeling of thermal behavior agrees with experiment. Theoretical modeling predicts that slight misalignment of the optic will not affect the thermal load. A substantial decrease in the temperature rise is expected if the air atmosphere is replaced with helium or if air flow is maintained over the optic.

AB - Measurements and calculations have been performed of thermal loading effects on polycapillary X-ray optics due to synchrotron bending magnet white-beam exposure. Steady-state temperature increases of up to 190°C at the input end of the optic have been measured during exposure to a beam intensity of 11 W/cm2; extended exposure at these intensities produces little or no performance degradation. Time to reach steady-state thermal equilibrium after exposure to the X-ray beam has been found to be of the order of 1 min. Theoretical modeling of thermal behavior agrees with experiment. Theoretical modeling predicts that slight misalignment of the optic will not affect the thermal load. A substantial decrease in the temperature rise is expected if the air atmosphere is replaced with helium or if air flow is maintained over the optic.

UR - https://www.scopus.com/pages/publications/0031359713

U2 - 10.1016/S0168-9002(97)00980-7

DO - 10.1016/S0168-9002(97)00980-7

M3 - Article

SN - 0168-9002

VL - 401

SP - 421

EP - 428

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

IS - 2-3

ER -

Synchrotron white beam thermal loading on polycapillary X-ray optics

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