Interestingly one of the things they proved out in this experiment was a new core lining that doesn't get anywhere near as radioactive as the carbon walls they

Interestingly one of the things they proved out in this experiment was a new core lining that doesn't get anywhere near as radioactive as the carbon walls they were using before. That was a bit of a big deal in itself: if it hadn't tracked theory as well as it did, it would have invalidated one of the material choices for ITER and knocked it back a fair bit.