Recent progress from the engineering run:

Page last modified on Thursday, October 20, 2011 at 12:46:23 PM

July 3: First evidence of beam seen at 10 o'clock!  The following shows signals seen in Octagon, Vertex and Paddle counters, for a typical 'beam' event. Trigger used was :
( (PP + PN) · RHIC_BUNCH ). The RHIC bunch signal sets off a 60 µs gate and we trigger on a threshold of our Sum-of-Paddle counter signal within this gate.

Signal in Octagon(Left) and Vertex(Right) detectors (13398 bytes)                       Fastbus TDC's (Left) and ADC's of TOF + Paddle counters(Right) (13398 bytes)

        Octagon                          Vertex                                                     Fastbus TDC's      ADC's (Paddle)

May 24: Distribution of vertices from a Ru-106 source. The source was mounted underneath the vertex detector at roughly -7cm. The data went through the full analysis chain, including Common Mode Noise calculation and the vertex was reconstructed with the vertex reconstruction package inside PhAT. Click to see more detail

vtx_distro.gif (9694 bytes)

May 20: First Results from Engineering Run: Online Plots of Source Test Produced in Real-Time (Source Data from Octagon+Vertex Modules » FEC » DMU » Mercury » Event-Builder » Online) Click to see more detail

First Results from Engineering Run DAQ: Online Plots of Source Test