Modeling contamination migration on the Chandra X-ray Observatory

Stephen L. O'Dell; Douglas A. Swartz; Paul P. Plucinsky; Mark A. Freeman; Maxim L. Markevitch; Alexey A. Vikhlinin; Kenny C. Chen; Rino J. Giordano; Perry J. Knollenberg; Peter A. Morris; Hien Tran; Neil W. Tice; Scot K. Anderson

doi:10.1117/12.619310

30 August 2005 Modeling contamination migration on the Chandra X-ray Observatory

Stephen L. O'Dell, Douglas A. Swartz, Paul P. Plucinsky, Mark A. Freeman, Maxim L. Markevitch, Alexey A. Vikhlinin, Kenny C. Chen, Rino J. Giordano, Perry J. Knollenberg, Peter A. Morris, Hien Tran, Neil W. Tice, Scot K. Anderson

Author Affiliations +

Proceedings Volume 5898, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV; 589813 (2005) https://doi.org/10.1117/12.619310
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

During its first 6 years of operation, the cold (-60°C) optical blocking filter of the Advanced CCD Imaging Spectrometer (ACIS), on board the Chandra X-ray Observatory, has accumulated a contaminating layer that attenuates the low-energy x rays. To assist in assessing the likelihood of successfully baking off the contaminant, members of the Chandra team developed contamination-migration simulation software. The simulation follows deposition onto and (temperature-dependent) vaporization from surfaces comprising a geometric model of the Observatory. A separate thermal analysis, augmented by on-board temperature monitoring, provides temperatures for each surface of a similar geometric model. This paper describes the physical basis for the simulations, the methodologies, and the predicted migration of the contaminant for various bake-out scenarios and assumptions.

Citation Download Citation

Stephen L. O'Dell, Douglas A. Swartz, Paul P. Plucinsky, Mark A. Freeman, Maxim L. Markevitch, Alexey A. Vikhlinin, Kenny C. Chen, Rino J. Giordano, Perry J. Knollenberg, Peter A. Morris, Hien Tran, Neil W. Tice, and Scot K. Anderson "Modeling contamination migration on the Chandra X-ray Observatory", Proc. SPIE 5898, UV, X-Ray, and Gamma-Ray Space Instrumentation for Astronomy XIV, 589813 (30 August 2005); https://doi.org/10.1117/12.619310

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available