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

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

3. FIELDS Overview 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 vectorsDC-64kHz Electric field vectorsDC-1MHz Plasma waves5Hz to 1MHz Quasi-thermal Noise10 kHz to 2.5MHz Radio emissions1MHz to 20 MHz 3 Milestones Milestone 1Jan 1, 2013 Milestone 2Jan 1, 2013 Project Status Update Update, update Funding Definitized Contract Value: $000 Definitized Funding Value:$000 Current EAC:$000 UCB Electric Field Antenna LPC2E Search-Coil Magnetometer (SCM) GSFC Fluxgate Magnetometer (MAG)

4. FIELDS Overview 4 Electric Field Antennas 2.3 m Tip-to-Hinge Preamps located at Hinge Mag Boom MAG (Inboard)MAG (Outboard) SCM Main Electronics Package (MEP) 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

5. FIELDs Organization 5

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 6

7. 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. FIELDS Technical Status

8. 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) FIELDS Schedule

9. 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.) FIELDS Schedule

10. 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 FIELDS Schedule

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

12. FIELDS Risk Summary 1)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. 2)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. 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. FIELDS Issues & Concerns