Recent content by browha

ah ha but a lot of those early LHCb triggers were entirely MC driven, and the rates don't correspond to what you get in data (For example). Or you find out, as has been done recently, a couple triggers are much worse in their reconstruction efficiency than you would expect (for example)...

Yes, but at the same time, for the purpose of making analyses consistent, you avoid changing the triggers unless absolutely necessary. Triggers were changed a lot going from 7 TeV to 8 TeV because of cross-section changes - so for example more pre-scaling on softer triggers was introduced to...

To answer your question Basically, no. Not as far as I know. The XML databases used to describe the detectors are massive in size (couple of GB), and because the alignment constantly changes (depending on the experiment, you have thermal effects/etc), you need to be able to time-tag it. As...

Just to flesh this out a bit. The accelerator is NOT in operation 24/7 - e.g. it is not constantly colliding. There is a lot of time where it is down for light maintenaince, awaiting re-injection, etc. Typically speaking, you're looking at 30 minutes for injection, 30 minutes for the ramp...