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Seth Zenz | Imperial College London | UK

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Location, Location, Location

If I had to pick one thing that’s definitely better on my old experiment, ATLAS, than on my new experiment, CMS — and especially if I had to pick something I could write publicly without getting into trouble — it would be this: the ATLAS detector is across the street from the rest of CERN. I’m not sure how that was decided, but once you know that, you know where CMS has to be: on the other side of the ring, 5 or 6 miles away. That’s because the detectors have the same goals and need the same beam conditions; two opposite points on the LHC are where a duplicate performance is easiest. The pre-existing caverns from the LEP collider, whose tunnel the LHC now uses, probably also helped determine where the detectors are.

In any case, it used to be that when I wanted to work on my detector, I had only to go across the street. Now I have to drive out of Switzerland and several miles into France. Except, I don’t like driving. So I’ve been working on alternate means of transportation. A few months ago I walked. Last night I had to go to downtown Geneva, so I took the bus. It’s actually pretty good, although the bus stop is a mile away from CMS. There’s also the shift shuttle, which runs from the main CERN site to CMS every 8 hours via a rather roundabout route. And I can bike, once the weather gets better and I get myself a little more road-worthy. To be honest, every option for getting here is much slower than driving, but I enjoy figuring out ways to get places enough that I’m going to keep trying for a while.

I have plenty of chances to try, because I’ll be here in the CMS control room a lot of the time over the next few weeks. Right now, I’m learning and helping with the pixel detector calibration effort. (We’re changing the operating temperature, so all the settings have to be checked.) Soon I’ll be learning to take on-call shifts. So the more I stay here, the more I learn. I got here this morning, and I won’t leave tonight until about 11 pm. I could take the shift shuttle back — or maybe I’ll just get a ride.

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One Response to “Location, Location, Location”

  1. Anna Phan says:

    I’m totally with you on this one Seth. It’s so much easier getting to ATLAS compared with any of the other LHC experiments. At least LHCb is a little more accessible than CMS is…

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