1. 1 LBT Q1 2007 Engineering Review ECS: Enclosure Control System, includes the dewpoint sensor, CA system upgrades, grounding, enclosure track performance

2. 2 Highlights (Q1/2007) Enclosure control system has been performing very well, very little observing time has been lost due to enclosure systems Enclosure control system has been performing very well, very little observing time has been lost due to enclosure systems Dewpoint monitoring in the enclosure Dewpoint monitoring in the enclosure Humidity or dewpoint monitoring of actuator compressed air Humidity or dewpoint monitoring of actuator compressed air Enclosure grounding progress Enclosure grounding progress Enclosure track performance Enclosure track performance

3. 3 Open Issues Technical Technical Humidity vs dewpoint monitoring of compressed air Humidity vs dewpoint monitoring of compressed air Schedule Schedule Decide now and order the dewpoint sensor Decide now and order the dewpoint sensor Financial Financial Need to order dewpoint sensors for CA, return humidity sensors Need to order dewpoint sensors for CA, return humidity sensors Resource Resource None None

4. 4 Progress (Q1/2007) ECS continues to operate well, few bugs and improvements fixed ECS continues to operate well, few bugs and improvements fixed Software needs to be written for dewpoint monitoring Software needs to be written for dewpoint monitoring Sensors were purchased, humidity for compressed air and dewpoint for the enclosure. Sensors were purchased, humidity for compressed air and dewpoint for the enclosure.

5. 5 Planning (Q2/2007) Install sensors Install sensors Write software Write software Debug Debug