1 C osmic dust R eflectron for I sotopic A nalysis CRIA LAMA (A cria is a baby llama)

2 Dust in Space! Space dust provides important clues on the formation and composition of our solar system as well as other stars. Several instruments have been launched on past missions to analyze the flux and composition of space dust in-situ.

3 Time-Of-Flight (TOF) Mass Spectrometers Dust is ionized against a target and accelerated through an electric field to a detector. Ion mass is inferred from Time-Of-Flight. CDA CIDA

4 Time-Of-Flight (TOF) Mass Spectrometers CDA CIDA Large target area Low mass resolution High mass resolution Small target area

5 Large Area Mass Analyzer

6 TOF Mass Spectrometer Large target area comparable to CDA. High mass resolution comparable to CIDA. Lab prototype constructed and tested.

7 LAMA: What is still needed for dust astronomy? Several tasks have yet to be completed: Create a dust triggering system Create a decontamination system Show instrument can survive in space DTS

8 How does a TOF mass spec work?

9 CRIA: Mass Analyzer Primary Subsystems IONIZER Target

10 CRIA: Mass Analyzer Primary Subsystems Ring Electrodes Annular Grid Electrodes Target ANALYZER (Ion Optics) Grounded Grid

11 CRIA: Mass Analyzer Primary Subsystems DETECTOR Detector

12 CRIA Concept: Operation incoming dust particle Example Dust Composition Species-1 Species-2 Species-3 Target Key Increasing mass Example Spectrum

13 CRIA Concept: Operation dust impacts target and ionizes (trigger  t 0 ) negative ions and electrons accelerated to target target material also ionizes Example Spectrum t0t0

14 CRIA Concept: Operation positive ions accelerated towards grounded grid (trigger  t1) Example Spectrum t1t1 t0t0 t1t1 t0t0 Ions of Species-1, Species-2, Species- 3, and Target Material

15 CRIA Concept: Operation Example Spectrum t1t1 t0t0 Positively charged particles focused towards detector

16 CRIA Concept: Operation Species-1 arrives at detector Example Spectrum t1t1 t0t0 t2t2 Species-1 ions arrive at detector Ions of the same species arrive at the detector at the same time with some spread

17 CRIA Concept: Operation Species-2 ions arrive at detector Species-2 arrives at detector Example Spectrum t1t1 t0t0 t2t2 t3t3

18 CRIA Concept: Operation Species-3 ions arrive at detector Species-3 arrives at detector Example Spectrum t1t1 t0t0 t2t2 t3t3 t4t4

19 CRIA Concept: Operation Target material ions arrive at detector Example Spectrum t1t1 t0t0 t2t2 t3t3 t4t4 t5t5 Target material has characteristic peak m/Δm: mass resolution

20 CRIA Project Phases Design Build, Assembly, & Integration Testing 1 2 3

21 CRIA Design IonizerDetector Analyzer Thermal Electronics/ CDH Structures Design is complete for all subsystems. However, certain design elements will need to be revisited during the build/assembly/integration phase.

22 Project Motivation Scale down LAMA to a size better suited for inclusion on missions of opportunity. Improve the Technological Readiness Level (TRL) of the LAMA concept from TRL 4 to TRL 5. LAMA CRIA Dan Baker (~6ft tall man) CRIA models LAMA (struc support)

23 Structure: Main Assembly Detector Assembly Target Assembly Main Housing Assembly Annular Electrode Assembly

24 Structure: Parts Summary Annular Electrode Support Target Grounded Grid Hexagonal Base Detector Ring Electrode Standoffs Target Electrodes Ring Electrodes Annular Electrodes Annular Electrode Mount

25 Structure: Main Housing Assembly

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27 CRIA Build, Assembly, & Integration Machining: All ring electrodes All of Detector Assembly Electronics boxes All Insulator pieces Adapter plate for testing Electronics work: Component testing Voltage divider assembly CSA and VD testing Mechanical Assembly: Test Plan for assembly testing Wire harnessing Solder connection from electronics assembly to electrodes Pre-test cleanliness requirements met

28 Cable Layout Heater/CSA High Voltage – Ion Optics

29 Cable Layout: Solder Access

30 Mechanical Ground Support Equipment Interfaces Remove-before-flight cover Thermal Vacuum/Vibration Adapter Plate

31 CRIA Testing Two test will be performed by December: Vacuum Chamber Thermal Vacuum Chamber (TVAC) Vibration Testing (potentially done by LASP) Pre-Test Work: Test Plan for TVAC includes setup of laser in chamber Potentially use Bakeout chamber at LASP Acquire necessary hardware Data acquisition / data reduction Testing Work: Man hours testing in both Vac and TVAC tests Acquire data Write report

32 Schedule MachiningTesting Test Plan / Documentation Assembly

33 Organizational Structure Customer Z. Sternovsky Administration System Engineer Electronics Thermal Structures Project Manager L. Brower CU Advisors X. Li S. Palo Student Lead D. Turner Professional S. Steg (LASP) Student Lead L. Brower Professional B. Lamprecht (LASP) Student Lead W. Tu Professional V. Hoxie (LASP) Student Lead D. Turner Professional M. Lankton (LASP) Professional M. Rhode (CU) Student Lead D. Lee Professional G. Drake (LASP) Materials Student Lead L. Chang Experienced Graduate K. Amyx (CU) Ion Optics Student Lead D. Turner Detector Manufacturing Professional G. Drake (LASP) Professional P. Graf

34 Let’s sign up for interviews!