December 2005 CMS Bulletin Contribution: Muon Endcaps  [ Slice Test]

Slice Test Contribution by Frank Geurts

EMu Slice Test

In the last couple of months the number of chambers that are in use for the Slice Test has steadily grown. At the YE+2 disk, all nine ME+2 target chambers are operational and hooked up to the final Peripheral Trigger and DAQ electronics. Together, those nine chambers form the 60° pie for the Magnet Test Slice. The target chambers on ME+3 are all operational. Preproduction Trigger electronics is used together with production DAQ electronics allowing for a ~20° pie. In all, 12 CSCs out of a possible 18 chambers on YE+2 are now in use for trigger generation and data readout. During all this time, the EMu DCS has been controlling and monitoring the various chamber services, e.g. High Voltage which involves several hundreds of channels.

 In the Green Barrack, both the TrackFinder trigger and the FED electronics use the final production electronics. The local trigger - generated by the TrackFinder - has been successfully tested with the new TTCci. Further tests with the B-channels looked good and in the very near future this module will replace the TTCvi in the Slice Test TTC partition.

 At a few occasions in the last couple of months, the EMu Slice Test ran with the Global DAQ. Recently, such a test was done over an extended period of about 20hrs during which approximately 4.8M events were captured at the Filter Units. Basic processing was performed within the CMSSW framework. All this involved self-triggered cosmics events.

 “International” integration within the Muon Endcap is under way: right before this CMS Week the EMu Slice Test set-up will be reorganized such that a few of the Dubna ME1/1 chambers on the YE+1 disk can be included in the overall read-out. Towards the Magnet Test other chambers on ME+1 and possibly ME+4 will follow.