Solar Probe Plus FIELDS Quarterly Management Nov 15, 2012

Project Overview Project Organization Spacecraft Accommodation/Instrument Suite Measurements Technical Status Special Topics: Mag Boom design SOW, QA meeting results Project Schedule Project Risk (Summary; Detail Description of any New, Yellow, or Red Risks; UFE threats/liens) Total Cumulative Project Cost Project Labor: Prime and Major Subs Subcontractor Summary Issues and Concerns QUARTERLY MGMT AGENDA

Introduction – Lori Suther (10 minutes) EVMS Implementation on SPP CAM Responsibility Project Manager (PM) Involvement Monthly EV Feedback Monthly EV Workflow Cycle Integrated Baseline Review JHU/APL EVMS Architecture Science Investigation Team (SIT) Participation Illustrative Trace Example Science Investigation Team EVM Challenges EVMS Going Forward EVMS AGENDA

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 4 UCB Electric Field Antenna LPC2E Search-Coil Magnetometer (SCM) GSFC Fluxgate Magnetometer (MAG) Project Status Update MAG/SCM Interference Study Complete CNES Considering Support to SCM Only RB L&EO Support Ending MAVEN Delivering in 2 weeks Funding Definitized Contract Value: $13.7 M Definitized Funding Value:$ 3.6 M End Date:3/14/2013 Current EAC:$13.7 M Milestones (Phase B) FIELDS Specification Dev (L2)Oct, 2012 MEP Specification Dev (L3)Jan, 2013 ICU & AEB Detailed DsnSep 2013 RFS* Detailed DsnOct 2013 FPGA ReviewsOct 2013 IPDRNov 19, 2013  Formerly HFR/TNR

FIELDS Overview 5 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: Radio Frequency Spectrometer (RFS) - UCB 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

FIELDS Organization 6

FIELDS Antenna Antenna Development Basic Concept Complete Materials Complete Niobium C-103 Tantalum-Tungsten Ta-W Thermal Modeling In process, Update expected 11/16/12 Thermal Test Model (TMM) Design requires two separate models Tests planned for PROMES and/or SAO Deployment Fly Weight Brake Prototype #1 Complete Prototype #2 Lower Starting Torque, Higher Speed 7

Main Electronics Package (MEP) Development Interface Concept with Spacecraft Needs an ICD Internal Electrical Concept Being Revised for RFS Working on Box Mechanical Specifications Basic Concept Uses Board Slices (similar to MAVEN) Board Size Must be Common Among all Boards Mass Estimate Used THEMIS-sized Boards (6”x9”)  AEB (THEMIS) is adding floating power supplies, reducing 6 to 4 channels, RB interface  ICU (MAVEN) adding 3DPlus Flash 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). Possibly use “SideCar” chip  MAG (MAVEN) is expanding heater filtering, will fit in 6x9”.  The Spectrometer will be less than a single board, replacing 2-board HFR-TNR.  TDS (STEREO) is expected to fit in 6” x 9” footprint Replaced HFR/TNR with Radio Frequency Spectrometer (RFS) FIELDS Electronics

Instrument Control Unit (ICU) Development Decision to Use MAVEN Heritage Design (ColdFire IP) Extending Flash Memory from 8 GB to 32 GB Reducing SRAM from 3 MB to 1MB Removing Interface Logic from 8 instruments to 5 Re-Using Interface Hardware and Software for MAG and DFB (MAVEN) Re-Using Interface Design for AEB (RBSP) TDS is reviewing the MAVEN protocol and expected to be a copy of DFB. Based upon MAVEN, CPU clock (power) should be reduced 4 to 8x FSW Development Plan follows MAVEN plan (NHB_7150 compliant) Code Warrior Development License, 2 Workstations on order ColdFire IP Core License procured FIELDS Electronics

RFS Block diagram 10 SCM MF Output E-Field Antenna Preamps HF outputs feed Receiver

RFS Dynamic Range 11 Pulupa – Aug, 2012

RFS Requirements Input levels – V1-V4 In the range ±5V Switchable gain on front end to accommodate wide dynamic range and uncertainty in signal levels (TBD, Gain in Preamp preferred) Dynamic Range for Receiver input and ADC – At Preamp Input, ranges from < 10µV to < 10mV (TBR) – Preamp will boost signal, so Receiver will input signal modified by the Preamp transfer function plus noise Noise level – At Preamp input: < 10nV / √Hz – Receiver must preserve this low noise floor (again modified by Preamp) – B-HF Frequency range 10kHz to 1MHz (SCM HF winding) – Voltage range: ±8.5V Switchable gain on front end to accommodate wide dynamic range and uncertainty in signal levels (TBD) 12

RFS Data Products Signal Processing – TNR Spectra V1, V2, V3, V4, V1-V2, V3-V4, B-HF Log-spaced frequencies, Δf/f = 4% (perhaps higher resolution) Picket fence, avoid frequencies f+Nf, starting at 150kHz, f=50kHz (or 150kHz) Cadence: TBD – TNR Cross Spectra (direction finding) V1 and V2, V3 and V4, V x B Cadence: TBD – HFR Spectra (And cross spectra?) V1, V2, V3, V4, V1-V2, V3-V4 Frequency resolution: – 1MHz to 5MHz: 50kHz spacing (TBR) – 5MHz to 20MHz: 100kHz spacing (TBR) Bandwidth: 25kHz (TBR) Picket fence Cadence: TBD 13

RFS Signal Processing Development Plan – Build Test Bed for Algorithm development and verification Hi speed ADC for signal capture, connected to laptop Acquire data set using STEREO S/WAVES Antennas/Preamp Can add impulsive events to time series, simulate anticipated dust signatures Develop algorithms in Software, then transfer to VHDL and/or FSW Include hi speed DAC to play data through Receiver – ETU build prior to iPDR 14

MAG Status Dual Tri-axial Fluxgate Magnetometers Basic concept complete (e.g., MAVEN, RBSP) Non-magnetic thermal vacuum chamber being built now to test wider temperature environment for fluxgate sensor. Wide range thermal cycling, thermal balance Calibration at temperature at GSFC Mag Test Site Evaluation of sensor materials (increase thermal stability, reduce sensor mass) Increased AC frequency response and increased sampling rate at 256 Hz also demonstrated Minor updates to sensor proportional heater design are in process; looking at ways to reduce heater power Printed circuit board sizes under study No problems anticipated with proposed 9.2” x 6.2” size Schedule and budget issues being actively worked 15

FIELDS Schedule FIELDS Schedule Rework Project 2010 was Crashing on Fields.mpp Linked to Wrong Sub-schedules Linked to random Tasks in Sub-schedules Unrecognizable Tasks e.g. “Update thermal model” Listing All Docs as due “2/1/2012” Need Real Dates and Real interactions with APL Milestones Needed Work  Mixture of SPP & random FIELDS tasks  Allowing Project 2010 to change instrument review dates Sub-schedules were insufficiently detailed Some still adjusting to changes in Mission schedule Want to be able to use PERT format Need to resource load Excerpt from Oct 5 schedule. Grey lines linked to other schedules in odd places.

FIELDS Schedule FIELDS Mission Schedule Changes Durations are ARO Is the schedule supposed to gate “flight build” upon iCDR, or MCDR ? iPDR and iCDR precede MPDR and MCDR by 6-8 weeks FIELDS appears to be delivering too early

FIELDS Schedule FIELDS Schedule Organization Each schedule is maintained by a team member who provides direct and timely communication with the team. Revises the schedule as needed.

FIELDS Schedule FIELDS Schedule Organization Progress and changes are reported to UCB by a member of that team with intimate knowledge of the application area.

Antenna Schedule FIELDS Schedule

ICU Schedule FIELDS Schedule

AEB Schedule FIELDS Schedule

RFS Schedule FIELDS Schedule

DFB Schedule (LASP) FIELDS Schedule

TDS Schedule (UMN) FIELDS Schedule

LNPS Schedule (UMN) FIELDS Schedule

SCM Schedule  Supported MAG-SCM compatibility tests  Built / Tested dual gain model with acceptable results for SPP  Developed SCM specification (Ed. ahead of schedule)  Currently funded through 2013 FIELDS Schedule

FIELDS Top Level Schedule  iPDR planned for 11/19/2013 FIELDS Schedule

FIELDS Risk Summary

FIELDS Risks

FIELDS Funds & Costs Distributions to LASP, UMN, UMD and UNH

FIELDS UCB Labor This looks better on a log scale.

FIELDS Subcontracts

Technical  “Common CPU” design with SWEAP is becoming less likely  SWEAP is requiring very high processor speeds, 64 GB, add new interfaces  FIELDS is looking to reduce power, reduce memory, utilize existing I/Fs and FSW  SWEAP needs to secure its own processor designer Cost  Encumbered Reserve for the HFR/TNR is very close to the RFS cost (1.1M )  However, Phase B is ~ 0.4M higher as the RFS needs development time.  Encumbered Reserve for SCM in Phase B is ~0.7M.  So, securing the SCM LOA would release enough funds for RFS  Otherwise, either [1] the GSFC backup SCM is delayed or [2] reserves could be used Schedule  MAVEN is leaving the building. That’s good!  Major proposals (ICON/OHMIC), if selected in March, will split our manpower  Personnel already in the process of listing replacement positions FIELDS Issues & Concerns