Wide Field Imager

ATHENA WFI Meeting

Garching, January 28, 2014

Markus Plattner

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General ESA Project Lifecycle

11/25/2013 ECSS-M-ST-10C_Rev.1(6March2009)_Space project management - Project planning and implementation

Mission analysis

Feasibility Study

Preliminary Definiton

DetailedDefinition

Qualification/Production

Utiliz-ation Disposal

B1 B2

Mission Adoption

Announcement of Opportunities

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Schedule for this Call for L2 Mission Concepts

11/25/2013

• ATHENA LoI submission deadline:

17 February 2014 (12:00 noon CET)

• Briefing meeting (ESTEC) 5 March 2014 (tbc)• Proposal submission deadline:

15 April 2014 (12:00 noon CET)

• Proposal evaluation April 2014 - June 2014

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Mission Concept – Expected Content

11/25/2013

• The mission Concept must address the science goals • Top level requirements:

– High throughput optics: ≈ 2 m² collecting area)– High angular resolution: 5 arcsec– Wide field of view in the focal plane– Energy resolution: 2.5 eV

• Technical Budget Envelopes:– Ariane 5 ECA: < 10 tons mass, 5.4 m diameter, 17 m height– < 75 Mbit/s downlink data rate (for Ka band, LagrangePoint L2)

• Contribution from international partners (upon inter-agency agreements) is limited to 20% of the total mission envelope.

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Call for Mission Concept – Important Points

11/25/2013

• ESA assessment of mission concept: Feasibility, technology readiness, international collaboration scheme (if applicable)

• Announcement of Opportunity (early 2015 tbc): Consortium shall be selected. Teams or payload consortia shall not be pre-selected in the mission concept

• The minimum request is to reach TRL 5/6 at mission adoption (2018/2019): Component and/or Breadboard Critical Function Verification in Relevant Environment

Effective overall time for mission preparation including necessary technology developments: 2014 until 2019.

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ATHENA Phase 0 and A Schedule

11/25/2013

Mission Concept

2014 20162015 2016

ESA Study Phase 0 Industrial Phase A Studies

2015AO for Payload and Science Ground Segment

2014Mission Definition Review

2016Preliminary Requirements Review

2014L2 Mission Concept Selection

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Work Breakdown Structure – Overview

11/25/2013

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WFI – Flight Hardware Architecture (1st Draft)

11/25/2013

X-ray baffleFilter wheel mechanism

Camera head

Heat pipes

Baseplate

Detector Electronics

Detector Assembly

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911/25/2013

WBS Flight System

Mechanical & Thermal Structure

AFE - VERITAS

CFE - Switcher

Detector Board with Proximity

Electronics

DePFET Detectors

Straylight Baffle

Filter

Calibration Source

Filter Wheel

Mechanical & Thermal I/F

Instrument Structure (incl.

baseplate)

Thermal Sytem & Control

Harness & Flex Connectors

Instrument Control Unit (nom

& red tbd)

Detector Electronics

(5x tbd)

ADCs

ADC Cluster FPGA(pre-processor)

Soft- & Firmware

Central Processor Module

Frame Builder Module

Power Conditioning

Instrument Control Software

Onboard Data Processing &

Reduction

CameraHead

Sequencer

Actuator Mechanism

Flight System

CH Chassis

DE Chassis

Controller ModuleFW, HK, ThermC.,

TM/TC Interface

Scientific Data HS Interface (uni

direction)

FW Mechanics & Housing

Graded Z-Shield

Proton Shield

ICU Chassis

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WBS Ground Support /Integration & Operation

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Work Breakdown Structure – Top Level

11/25/2013

WFI (ATHENA Payload)

Astro-Physical Simulations

Scientific Operations Support

MPE Project Office

SystemsEngineering

Project Management

Product Assurance

Project Controlling & Contracts Management

WFIScience

Scientific Requirements

Data Analysis & Evaluation