The original incarnation of the CLEO detector first started looking at the products of e+ e- collisions in 1979; the latest (and last) version, CLEO-c, recorded its last event at 8 am Eastern today - an electron and a positron bouncing off each other. Along the way, 450 papers have been published on CLEO data. We had a little celebration in the counting room as the last run, 234607, ended:

Last CLEO run

There’s still a lot of work to do - we need to decommission CLEO and reconstruct and analyze the last data!

One Response to “So long and thanks for all the events”

  1. The last* CLEO-c double tag event « Charm &c. Says:

    [...] stopped taking data earlier this week.  We looked in the last data run (7:38 am to 8 am) of just over 61 thousand events for collisions [...]

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