MIME – Update Report Olivier LE DUFF – 10 May 2012 CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE Laboratoire de Physique et Chimie de l'Environnement et de l’Espace 3A, avenue de la Recherche Scientifique F-45071 Orléans cedex 02, France MIME – Update Report Olivier LE DUFF – 10 May 2012 MIME Team : Jean-Louis RAUCH – Jean-Gabriel TROTIGNON - Olivier LE DUFF 1 olivier.le_duff@cnrs-orleans.fr
Outlines MIME – Principles Mechanics Specifications Funding and Lab Support Summary and Prospective 2
MIME principle – Main Option LP-PWI & MIME Board 4 LP-PWI MIME synthesizer control E-Field and LP Bias Control DACs MIME Drivers clock synchronous acquisition DPU Acquisition Lines 3
MIME principle – Second Option LP-PWI & MIME Board 4 LP-PWI (1 or 2 LP-PWI) MIME synthesizer control E-Field and LP Bias Control DACs MIME Drivers clock synchronous acquisition DPU Acquisition Lines 4
Possible quadripole probe accommodations 4 Langmuir probes accommodation 2 Langmuir probes and RWI antennas accommodation 5
Mechanics (Warsaw meeting / Lennart Ahlen 2011-01-10) Backplane with power distribution, analog and digital interfaces Board size: 20x15cm Connectors: Micro-D type Distance between Boards: 20mm DC/DC Converter DPU LP-PWI & MIME LF MF HF 6
MIME Design Proposal Proposal: Justifications Dedicated board or area. Dedicated FPGA and VHDL code. Delivery of software for onboard data treatment. Justifications Easiest development. Better control of design process and tests. Minimized risks. Financial and technical support from CNES and LPC2E. 7
Specifications FPGA : ACTEL or XILINX ? Synchronous emission/acquisition (absolute phase information). Emission Frequency bandwidth: few 100Hz to 3MHz. Signal shape (Sin wave ,triangle, ramps…) TBD. Sweep or emission occurrence: TBD. Analog interfaces (number, level, impedance…) : TBD. Level of design integration: TBD. Tele-command and Synthesizer Control (calibration purpose): TBD. Budgets : < 1W; 250g (based on AM²P-E / Bepicolombo experience). 8
Funding and Lab support “Pre-phase A” funding secured by CNES. MIME development funding by CNES : conditioned by AO selection. LAB SUPPORT: Electronic breadboard, EM and flight model. Software development and delivery. Man Power : Before 2014: technical manager (O. LE DUFF). From 2014: technical manager (O. LE DUFF) and development engineer(s) TBD. 9
Summary and Perspective So far: Sketch of RPWI architecture. Sensors accommodation. Definition of emission modes and types (needed for synthesizer specifications). Define the MIME I/F. Dedicated MIME/RPWI meeting? 10