PHENIX Run-14 Status
PHENIX is actively collecting physics data triggered by significant background from the Blue Ring. Leaks detected in return lines require tubing replacement to maintain operations. Trigger ratios are being monitored, and data sampling is ongoing for collision and background selection at Au+Au @ 15 GeV events. Plans include addressing NOVEC coolant loss and investigating possible background sources. Follow the latest updates from the RHIC Time Meetings held by Klaus Dehmelt.
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Presentation Transcript
PHENIX Run-14 Status Klaus Dehmelt February 25, 2014 Klaus Dehmelt Feb. 25, 2014 RHIC Time Meeting 1
PHENIX Taking Physics Data PHENIX is collecting physics data PHENIX is timed in Physics triggers being received Significant background from Blue Ring Increased NOVEC coolant loss Return lines from FVTX and VTX-P show leaks Planning to replace Teflon tubing by stainless steel tubing at next access (unless leak gets worse) Klaus Dehmelt Feb. 25, 2014 RHIC Time Meeting 2
PHENIX Taking Physics Data Trigger ratios: NO-Vertex BBC trigger over min-bias trigger Expected to be ~ 10 Klaus Dehmelt Feb. 25, 2014 RHIC Time Meeting 3
PHENIX Data Sampling BBC Trigger within +/- 30 cm BBC S/N fires with more than 2 tubes BBC S/N fires with less than 3 tubes Au+Au @ 15 GeV Collision Selection Au+Au @ 15 GeV Background Selection J. Nagle Klaus Dehmelt Feb. 25, 2014 RHIC Time Meeting 4
Calendar and Plans PHENIX continues taking data Number of real Au+Au @ 15 GeV events: ~ 6.3M events (Feb. 25) (Lint ~ 1/ b) Need to look into possible background source in PHENIX-South Access on next possible access Fix NOVEC leak issue Klaus Dehmelt Feb. 25, 2014 RHIC Time Meeting 5
