概要（Overview）

Novellus Systems introduced the Concept Two-ALTUS in 1993. It is a chemical vapor deposition reactor system that combines the modular architecture of the Concept Two system with an advanced tungsten CVD process chamber. The system features a new dual loadlock cassette module with full factory automation capability to meet the high throughput requirements of high volume automated eight inch wafer fabs. This dual loadlock cassette handler permits continuous operation of the process chamber with one loadlock, while a second loadlock is simultaneously being loaded or unloaded by the operator in the cleanroom.