Since we maintain a machine, there are many tasks that have to be performed regularly, so those tend to be the same, or at least similar, all the time. However, because the machine is so special and fancy – one of only a handful in the world – and because we’re always trying to make it better, there’s always something new and different to do too! Either a problem that nobody else in the world has had to solve, or trying to fix something for which there are no spare parts!
It depends. As an example, today i was working on a presentation that I have to give on Friday, worked on writing a paper over my current project that’s due tomorrow, i went by the workshop to check on a part they are building for me to make sure they knew what i wanted, also spend about 30 minutes cleaning my lab, another 30 minutes helping another engineer look at a new lab we’re going to move some of our things in (when i say lab i mean essentially a room that’s temperautre controlled to be exactly 20degrees C, that we do our work in). And every day is different, we do lots of stuff! Tue and Wednesday of this week i’m taking an all day course on measurement uncertainty (lots of maths…).