November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

Seimetz1

DLR

06 – RSH Packaging OverviewLars Seimetz, CAU, Kiel, Germany

RSH Packaging Peer Review

November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

Seimetz2

DLR

Content

•Location/ Requirements•Packaging Concept•Mechanical Overview•Package List

November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

Seimetz3

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Location of RSH

•Inside MSL Rover, near Mastcam.

•Vertical Mount

•RSH Top Window ~5mm below RAD Rover Window

•Radiation of RTGs expected to be seen in RADs measurements

November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

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Requirements due to ERD (Rev.1, 4/15/2005) and Thermal Models by K.Smith (SwRI)Thermal:

Cold/Hot Op.: -42°C/52°C (Status PDR) Cold/Hot Qual.: -56°C/72°C (Status PDR)

Vibration: Acc. to ERD 4.12.2.1 (Quasi-Static Structural Design Loads) ff Pressure Change Rates: ERD 4.7.2 ff

HumidityEarth Athmosphere, 1013mbar, ~30..70%rHCO2 Athmosphere, 6mbar, ~0%rH

Requirements

November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

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Packaging Concept

•RSH as a stand-alone Module (Testing, Calibration)•Spring Loaded Design (Thermal Range, Thermal Expansion and Launch Loads)•Self-Contained Packages

November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

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Mech. Overview/

November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

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Packages

Detector-Stack A, Step 0.8

•PIN-Detector A•Analogue EBoard A with Omnetics „Bi-Lobe“ Connector (MNS0-25-VV-M-ETH)

•Materials:•Aluminium 3.4365(EN AW-7075) •Compliant Spacers, Material-Selection still ongoing (Kel-F, Vespel,…)•Screw Locking: Staking-Material (Urylene, Solithane)

November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

Seimetz8

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Packages

Detector-Stack BC + Anticoincidence (Step 2)

PIN-Diode B + C (Step 0.9)Analogue EBoard BC with Omnetics „Bi-Lobe“ Connector (MNS0-25-VV-M-ETH) Materials:

Aluminium 3.4365(EN AW-7075)

Compliant Spacers, Material-Selection still ongoing (Kel-F, Vespel,…)

Screw Locking: Staking-Material (Urylene, S..)

Top/ Bottom Anticoincidence Material BC432m (St. Gobain), Material currently validatedGlue: Dow Corning 93-500

November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

Seimetz9

DLR

Packages

Anticoincidence Spring-Package

•12 OTS Coil Springs (Gutekunst) •Stainless Steel (1.4310, AISI 301)

•Preload : ~19 N/Spring = 228 N Total (Vibration-Mockup)

•Baseline 60‘s according to MAC from ERD

November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

Seimetz10

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Packages

CsI-Crystal (D-Detector)-Package (Step 1)

•Doted with Thallium mainly for better light output•Accomodates

–3 x PIN-Diodes (D-Detector)–3 x CSA–Interconnection (PIN/CSA) through Flexstrips

•CSAs–6 AWG 32 Teflon-Wires–1 Coax-Cables (AWG 34, Teflon)–Optimized EEE-Parts Location

•Neutron Detector–35 g BC432m–Analogue Board under NC

November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

Seimetz11

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Packages

CsI-Spring-Package

•6 OTS Coil Springs (Gutekunst)

•Stainless Steel (1.4310, AISI 310)

•(Preload : ~30 N/Spring = ~180 N Total)

•Baseline: 60‘s according to MAC from ERD

November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

Seimetz12

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Packages

RSH Interconnection

•Rigid-Flexboard•Manufacturer: „Brockstedt GmbH“•Separate Traces to

–Analogue Board A–Analogue Board B/C–Analogue Board F

•Connector Types: Omnetics „Bi-Lobe“•Glenair MDM 51

•Material:•Layer Composition:

November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

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Packages

Housing

•Consisting of 4 parts•Manufacture In-House•Material Magnesium

–Alloy ZK60, (AZ80)•Total Mass 107g•Average Wall Thickness 1mm•Light Tightness•Venting through Connector Compartment•Purging •Protection Film on top.

November 30 – December 1, 2006

RSH Packaging Peer Review

RAD – The Radiation Assessment Detector for MSL

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Packages

Protection Foil

•~5mm below Rover Window

•Lighttight Kapton Foil, Material Decision ongoing

•Determination of necessary thickness ongoing (“Pressure Change Rates” – ERD)