ATST Overview Mark Warner ATST Global Interlock Systems

ATST Overview Mark Warner ATST Global Interlock Systems Design Review 24 September 2009 ATST GIS SDR 1

Agenda • 8: 35 - 9: 00 Brief description on ATST (Mark Warner) 9: 00 – 9: 45 Hazard Analysis (Rob Hubbard) 10: 00 – 10: 15 Break 10: 15 – 11: 30 GIS Specifications and Interfaces (Scott Bulau) 11: 30 – 11: 45 Safety Management (Chuck Gessner) 11: 45 – 12: 45 GIS Design (Scott Bulau) 12: 45 – 1: 30 Lunch 1: 30 – 2: 00 GIS Design (cont. ) 2: 00 – 2: 45 Plan of implementation (Scott Bulau) 2: 45 – 3: 00 Break 3: 00 – 4: 30 Executive Session (Committee) Generate Draft Report 4: 30 – 5: 00 Brief Project (Committee) • 5: 00 • • • September 24, 2009 Adjourn ATST GIS SDR 2

Overview of ATST • • 24 September 2009 What is ATST? Where is ATST being built? When will ATST be built? What are the key parts and subsystems of ATST? ATST GIS SDR 3

What is ATST? 1. Four-meter class alt-az solar telescope 1. Off-axis Gregorian optical design (10 mirrors) 2. Large diameter (16. 5 m) rotating coudé lab under telescope mount 2. Integrated Adaptive Optics, Wavefront Correction 3. Five Major Instruments + Polarization & Calibration Equipment 4. High-Level Software + Controls 5. Enclosure 6. Support Facilities & Buildings 7. Remote Operations Facility 24 September 2009 ATST Global Interlock System SDR 4

Where is ATST being built? ATST Site 24 September 2009 ATST Global Interlock System SDR 5

Where is ATST being built? 1. Institute for Astronomy (IFA) Haleakalā Observatory on the island of Maui, Hawai’i. 2. 20 o 42’ N, 156 o 10’ W 3. 10, 023 feet ASL (3084 m) 4. Moderate temperatures 5. 65 inches annual rainfall 6. Sensitive Site 1. Ecological 2. Cultural 3. Scientific 4. Military, US Government 24 September 2009 ATST Global Interlock System SDR 6

When Will ATST Be Built? 1. Design & Development Phase: 2001 -2009 2. Construction Phase: 2010 -2018 • Includes IT&C • Work on site is pending EIS Ro. D and CDUP • Major contracts being let now to industrial firms • Operations Phase: 2018+ 24 September 2009 ATST Global Interlock System SDR 7

What Are Key Components & Subsystems of ATST? +Remote Operations Building 24 September 2009 ATST Global Interlock System SDR 8

Operations Building: • 3 Levels • Personnel Elevator • Platform Lift • Mechanical Equip. • Machine Shop • Computer Room • Operations Room 24 September 2009 ATST Global Interlock System SDR 9

Enclosure: • Azimuth Rotation • Up/Over Shutter(s) • Entrance Aperture Plate • Entrance Cover • Crane(s) • Deployable Platforms Enclosure Thermal: • External Plate Coil Cooling • 24 x Vent Gates • Active Fans • Internal Air Scavenging • Dehumidification 24 September ATST Global Interlock System SDR • (AKA 2009 Facility Thermal System) 10

Telescope Mount: • Altitude-over-Azimuth • Off-Axis Design • M 1 -M 4 on OSS • M 5 & M 6 on Mount Base • Hydrostatic Bearings • Powered M 1 Cover • Altitude Lock Pins • Deployable Access Platforms Coudé Rotator: • 16. 5 m Rotating Floor (Az) • Suspended Floor • M 7 -M 10 + Instruments • Hydrostatic Bearings 24 September 2009 Coudé Environmental System: • Down Flow System Environmental Room • Thermal, Particulate, Pressure, Humidity Control • (Air Knife) ATST Global Interlock System SDR 11

Optic Assemblies M 1 -M 10 24 September 2009 ATST Global Interlock System SDR 12

24 September 2009 ATST Global Interlock System SDR 13

Other Key Subsystems • Acquisition System • Wavefront Correction (AO, a. O) • Control Systems – Common Services – Observatory Control System (OCS) – Data Handling System (DHS) – Telescope Control System (TCS) – Subsystem Control Systems (e. g. , M 1 CS, MCS, ECS) – Global Interlock System (GIS) Today’s SDR 24 September 2009 ATST Global Interlock System SDR 14

24 September 2009 ATST Global Interlock System SDR 15