Vacuum System Assembly

My vacuum system is put together with NW fittings. Why? Because these were the ones I managed to get a hold of. Also, they are readily available for replacement and reasonably cheap second hand. Most of the fitting were donated by George Solomom from Vacuum Technology Incorporated including the diffusion pump and the valves. The rest were bought on eBay:

In order to connect the roughing pump to the system, I soldered an adapter to a scrap copper pipe and soldered that to some fittings that matched the threads on the input to the robinair pump:

This connects to a a 3 terminal fitting : one of the other two terminals goes to the foreline of the diffusion pump via a valve, the other goes to a flex tube to the high vacuum assembly via another valve and in the middle is a thermocouple gauge to measure the foreline pressure. The High vacuum 4 way cross assembly is connected to: the inlet of the diffusion pump, the "yet-to-be-built" beam line and the other flange in capped off with a blank. Hopefully I can get a hold of / design & build a high vacuum gauge such as an ion gauge to go in the place of the blank. (For previous accelerator, I had built some sort of cold cathode ion gauge, but it was pretty worthless...)

I haven't turned the vacuum system on yet, I will have to clean out all pieces with solvent and fill the diffusion pump with oil.

Here's what it looks like:

If you have any suggestions for a better design, let me know!