2017 NSREC Short Course
On behalf of the 2017 IEEE Nuclear and Space Radiation Effects Conference (NSREC) Committee, I cordially invite you to attend the 38th IEEE NSREC Short Course. An outstanding group of technical experts will provide an overview of radiation hardness assurance topics required for designing and evaluating a wide variety of spacecraft and instrument systems – from macro to nano.
Dr. Jonathan Pellish
NASA GoddardSpace Flight Center
Short Course Chairman
A one-day short course, “Radiation Hardness Assurance for Satellite Systems – From Macro to Nano,” will be presented at the 2017 IEEE Nuclear and Space Radiation Effects Conference (NSREC). This course will discuss Radiation Hardness Assurance for a wide range of space systems, starting with large- and medium-scale systems, and extending them to small satellites with reduced mass and lower overall cost. During the past decade, numerous small platforms have been launched into space, often using advanced Commercial-Off-the –Shelf (COTS) technologies. While the radiation effects vulnerabilities of small satellites are the same as those of their larger, traditional relatives, a revised approach is needed for risk management because of differences in technical requirements and programmatic resources for small satellites. This short course will benefit those new to the field by covering traditional hardness assurance methods. Hardness assurance approaches for highly scaled microelectronics will be included, an evolving topic which is of considerable interest to those experienced in the field.
The short course is organized into four sections. The first provides an overview of Total Ionizing Dose and Displacement Damage Dose (DDD), while the second provides an overview of Single-Event Effects (SEE). Each section will be introduced with sufficient background for those new to the community. The third section of the course discusses how traditional approaches can be modified to address state-of-the-art small platforms. A key factor is the difference in success criteria for small satellites compared to traditional platforms. The fourth section will address applied, practical approaches for hardness assurance in a wide variety of space systems, including real examples for small satellites.
This short course is intended for system designers, radiation effects engineers, component specialists, and other technical and management personnel who are involved in developing reliable systems designed to operate in radiation environments. It provides a unique opportunity for IEEE NSREC attendees to benefit from the expertise of the instructors, along with a critical review of state-of-the-art knowledge in the field. Electronic copies of detailed course notes will be provided at registration.
For those interested in Continuing Education Units (CEUs), there will be an open-book exam at the end of the course. The course is valued at 0.6 CEUs, and is endorsed by the IEEE and by the International Association for Continuing Education and Training (IACET).
PART I – TOTAL IONIZING AND NON-IONIZING DOSE RADIATION HARDNESS ASSURANCE
Dr. Christian Poivey, European Space Agency, will introduce Total Ionizing Dose and Total Non-Ionizing Dose (TNID) effects on electronic parts. He will present the basics of TID and TNID Radiation Hardness Assurance (RHA) for Space Systems, including a discussion of Radiation Design Margin (RDM) requirements. Systematic errors and uncertainties on the different inputs used to define TID and TNID RDM will be reviewed: mission radiation environment, radiation levels within the spacecraft, parts radiation sensitivity, and circuit design. Finally, the challenges of adapting current TID and TNID RHA methodologies to small satellites will be presented, including the use of Commercial-Off-The-Shelf (COTS) parts and performing radiation testing at board level. Application examples will be presented.
PART II – SINGLE-EVENT EFFECTS RADIATION HARDNESS ASSURANCE
Dr. Ray Ladbury, National Aeronautics and Space Administration, Goddard Space Flight Center, will discuss Radiation Hardness Assurance for Single-Event Effects (SEE) across the spectrum of satellite platforms, from national assets to nanosats. This part of the course first outlines the conventional RHA approach, which emphasizes mission success. Next, Dr. Ladbury will discuss the challenges posed by new satellite platforms (e.g., nanosats, smallsats, etc.), where cost and schedule receive emphasis equal to if not greater than mission success.
These additional pressures, along with increasing demands to reduce size, weight and power, along with increased performance, drive many projects toward increasing use of COTS technologies. While this may reduce direct parts cost and procurement lead times, it undermines many cost-reduction strategies used for conventional SEE RHA and can make radiation testing and analysis one of the most significant risks—or worse, a risk neglected altogether. That section will end with some approaches for restoring balance in the troika of mission success, cost, and schedule.
PART III – INTRODUCTION TO SMALLSATS AND CORRELATING FACTORS FOR MISSION SUCCESS
Dr. Michael Swartwout, Saint Louis University, will discuss the capabilities of today’s small spacecraft, which are quite different than they were a decade ago. New, unprecedented launch opportunities are available for such missions that reduce cost and increase schedule flexibility. Given such a dynamic field, it is important to provide clarity and context for spacecraft developers. This part of the course will review the field of small spacecraft, which we define as anything under 200 kg. Particular attention will be paid to CubeSats. We will introduce a taxonomy for describing such missions, and review the launch and on-orbit history of the last twenty years, emphasizing mission capabilities and mission success. We will identify key factors that correlate to mission success.
PART IV – DESIGN PRINCIPLES FOR MISSION SUCCESS IN SPACECRAFT PROGRAMS
Dr. David Roth, Johns Hopkins University Applied Physics Lab, will present hardness assurance design principles for mission success in a variety of spacecraft and instrument platforms. This presentation will come from a systems engineering point of view, leveraging information from the previous short course sections on how to manage risks for mission success. Topics covered will include radiation effects risk identification and risk management strategies, robust system design practices, and case studies of radiation mitigation for various spacecraft programs, including small satellites.