The invention provides an improved CVD reactor sub-
system including a modular reactor
enclosure and function modules. The modular reactor
enclosure can accommodate a commercially available cold-wall CVD reactor chamber, and the function modules can be arranged on the reactor
enclosure to provide functions necessary to perform a CVD process with the reactor chamber. Preferred function modules include modules for providing heat to a CVD reactor chamber and modules for measuring conditions internal to a CVD reactor chamber. The invention also provides methods for configuring such a CVD reactor sub-
system, in particular configuring the sub-
system to best perform a particular CVD process, and kits for performing such configuring. Advantageously, the invention allows a single CVD reactor sub-system to be reconfigured and rearranged so that it can best perform a number of different CVD processes.