1. Particle Physics and Astrophysics (PPA) Mechanical Engineering Ken Fouts

2. Why is Safety so Important?

3. SLAC Organization

4. Particle Physics and Astrophysics Organization

5. What is an engineer? Engineers are professional problem-solvers. They use math and science along with skills in communications, critical thinking, and management to find practical solutions that will benefit people or society. They DO things: design, create, build, improve, invent -- everything from heart valves and microchips to skyscrapers, space vehicles and scientific instruments.

6. LAT Instrument Design: 4x4 modular array e+e+ e–e–  Si Tracker pitch = 228 µm 880,000 channels 18 X-Y layers of silicon w/ tungsten foil converters (12 layers × 2.8% X 0 + 4 layers × 19% X 0 + 2 layers) Mechanical Sys. (inc. Grid & Thermal Radiators) 3000 kg, 650 W (allocation) 1.75 m  1.75 m  1.0 m 20 MeV – 300 GeV CsI Calorimeter Hodoscopic array 8.4 X 0 8 × 12 bars of CsI 2.0 × 2.7 × 32.6 cm Anti-Coincidence Detector Segmented scintillator tiles 0.9997 efficiency Electronics, Data Acquisition, & Flight Software LAT measures direction and energy of incoming gamma rays

7. LAT Project Milestones

8. To work in collaboration with project physicists to safely turn physics ideas into reality: the abstract into the concrete and theory into application. We accomplish this by: –Defining system level requirements that aid in assessing engineering design concepts. –Engaging in research and development of enabling technologies. –Providing planned opportunities for peer review of design concepts and project plans. –Designing, building and testing complex instruments, experiments and machines that meet or exceed project requirements. PPA Mechanical Engineering Mission

9. PPA-Mechanical Engineering is a Matrix Organization PPA Mechanical Engineering ATLAS Upgrade SID Detector LCLS/LUSI BaBar EXO GLAST LSST

10. PPA-ME Core Competencies Structural and thermal design and analysis 3D modeling Electro-mechanical design Optical systems engineering and design Detector and accelerator system design Cryogenic system design and operation Mechanical ground support equipment design Specialty machining Precision assembly and integration Clean room operations PPA-ME provides Engineering and Technical resources to projects with expertise in the following areas:

11. PPA ME Staff Distribution Current Mechanical Engineering Staff 8 Engineers –1 PhD –2 Master Degrees –5 Bachelor Degrees 8 Science and Engineering Associates 2 Machinists 2 Hourly Technicians

12. Current Projects and Staff Assignments

13. PPA-ME Facilities Building 33 Light Fabrication Approximately 5000 SF Class 100,000 Cleanroom –5 ton bridge crane coverage over 800 SF 2500 SF Hi-Bay Assembly –15 ton crane coverage B107 Machine Shop 5 Machining stations –2 End Mills –3 Lathes –Miscellaneous equipment

14. Welcome to SLAC!