Solar Probe Plus FIELDS Monthly Management Telecom Sep 17, 2012

1. Solar Probe Plus FIELDS Monthly Management Telecom Sep 17, 2012

2. MONTHLY MGMT AGENDA • Monthly Report Review • Schedule Review • Financial Report Review • EVM Inputs and Variance Explanations

3. FIELDS Overview UCB Electric Field Antenna Observations • Measure electric and magnetic fields and waves • Measure poynting flux, absolute plasma density and electron temperature, S/C floating potential and density fluctuations, and radio emissions Measurements • Magnetic field vectors DC-64kHz • Electric field vectors DC-1MHz • Plasma waves 5Hz to 1MHz • Quasi-thermal Noise 10 kHz to 2.5MHz • Radio emissions 1MHz to 20 MHz GSFC Fluxgate Magnetometer (MAG) LPC2E Search-Coil Magnetometer (SCM) • Project Status Update • Update, update • Update, update • Update, update • Funding • Definitized Contract Value: $000 • Definitized Funding Value: $000 • Current EAC: $000 • Milestones • Milestone 1 Jan 1, 2013 • Milestone 2 Jan 1, 2013

4. FIELDS Overview Electric Field Antennas 2.3 m Tip-to-Hinge Preamps located at Hinge Main Electronics Package includes: • Thermal Noise Receiver / High Frequency Receiver (TNR/HFR) - LESIA • Time Domain Sampler (TDS) - UMinn • Digital Fields Board (DFB) - LASP • Antenna Electronics Board (AEB) – UCB • MAG Electronics (MAG) – GSFC • Instrument Control Unit (ICU) – UCB • Low Noise Power Supply (LNPS) - UMinn Main Electronics Package (MEP) MagBoom MAG (Inboard) MAG (Outboard) SCM

5. FIELDs Organization

6. FIELDs Technical Status • Antenna Technology Development • Basic Concept Complete • Materials Tests in progress @GRC • Niobium C-103 • Tantalum-Tungsten Ta-W • Thermal Modeling • Expected 10/15/12 • Will need Preamp details soon • Thermal Test Model (TTM) • Design in progress • Fabrication expect by end of year • PROMES tests in Winter 2013 • Deployment Hinge • Prototype #1 Complete • Prototype #2 in fab

7. FIELDS Technical Status • Main Electronics Package Development • Basic Interface Concept with Spacecraft Complete • Internal Electrical Concept Complete • Working on Box Mechanical Specifications • Basic Concept Uses Board Slices (similar to MAVEN) • Board Size Must be Common Among all Boards • FIELDS boards have THEMIS, MAVEN and STEREO heritage • Mass Estimate Used THEMIS-sized Boards (6”x9”) • AEB (THEMIS) no issue • ICP (MAVEN) adding memory but will fit in 6x9” format. • DFB (THEMIS) has to add circuitry and needs smaller A/D’s to fit. The smaller A/Ds need radiation testing (in the works at LASP). • MAG (MAVEN) is requesting a separate slice for heater circuits and more filtering than on MAVEN. Would prefer MAVEN footprint. • Digital Spectrometer would be a single slice, replacing HFR-TNR. There is a group working on these specifications.

8. FIELDS Schedule • Electric Field Antennae Schedule • Materials • Materials testing at GRC has shown mass increases in the samples • Concern that oxidation will change optical properties, we have repeated tests with “O2 getters” These did not solve the problem. • Added a second candidate material Ta-W to test • Thermal Test Model (at PROMES) • Thermal modeling showed initial concept of TMM would not fully demonstrate the design. Revised TMM design in progress, fabrication by year end. • Next PROMES opportunity is Winter 2013 (not Sept 2012)

9. FIELDS Schedule • Main Electronics Package Schedule • Very high-level schedule of MEP effort currently in master schedule • Details to be linked in as the detailed specification is finished (i.e. Will the board size, shape, connectors change, etc?) • ICP design will have priority as other board designers will need “ICP simulators” for their test apparatus. • ICP test will require S/C simulator (GSEOS) as in RBSP. • FIELDs ICD will be needed for S/C simulator. • (LNPS, TDS, and DFB have nearly the same schedules at this point.)

10. FIELDS Schedule • MAG Schedule • Supported MAG-SCM tests • Final report just delivered last week • GSFC has demonstrated 256 samples/sec operation • Designed non-magnetic TV chamber for sensor life tests • Considering materials changes in sensor

11. FIELDS Schedule • SCM Schedule • Supported MAG-SCM compatibility tests • Built / Tested dual gain model with acceptable results for SPP • Developed SCM specification

12. FIELDS Risk Summary F14 - Phase B Schedule Risk has been retired. This risk turned into reality as the APL-to-UCB contract took until the end of the funded period and UCB watched all its subcontracts fall out of contract. According to our Sponsored Projects Office, No-Cost-Extensions were offered to all subcontractors. We expect to get back on schedule in the coming period. F3 - Foreign Funding (commitment): Continuing as our top risk, we are expecting to hear more next month from our French colleagues about possible technical working arrangements for a joint project.

13. FIELDS Cost

14. Subcontracts All Subcontracts are currently on No-Cost Extensions APL-UCB contract modifications have historically occurred too late for UCB to keep subcontractors continuously funded.

15. FIELDS Issues & Concerns • Technical • HFR/TNR manpower issues. Backup with UCB-Digital Receiver • Cost • No Issues • Schedule • Fall 2012 Manpower issues at UCB. RBSP launch, FOXSI launch and MAVEN delivery has depleted engineering and management resources.