Reactor having a movable shutter

1. A shutter assembly for a reactor comprising:

a cylindrical shutter for selectively closing a passthrough opening of said reactor, said shutter forming a closed loop and including an internal cavity adapted to receive a cooling fluid; tubing connected with said cylindrical shutter for supplying said cooling fluid to said internal cavity;

an actuator connected with said tubing for moving said tubing and said cylindrical shutter, wherein said cylindrical shutter is movable between a first substantially closed position and a second substantially open position; and

a movable plate between said cylindrical shutter and said actuator, wherein said tubing is permanently secured to said movable plate.

2. The shutter assembly as claimed in claim 1 , wherein said tubing has an upper end secured to said cylindrical shutter and a lower end in fluid communication with a source of the cooling fluid.

3. The shutter assembly as claimed in claim 1 , wherein said tubing extends through an opening in said movable plate.

4. The shutter assembly as claimed in claim 3 , further comprising a flexible bellows surrounding a portion of said tubing.

5. The shutter as claimed in claim 1 , wherein said cylindrical shutter is adapted for substantially surrounding an outer perimeter of a wafer carrier.

6. The shutter assembly as claimed in claim 1 , wherein said cooling fluid is selected from the group consisting of gas, water, oil and liquids having a boiling temperature of 100 degrees Celsius or greater.