BTOF and MTD noise patterns are determined from dedicated TOF noise runs. Such runs are typically executed once per day -time permitting- during each RHIC Run at times when there is no beam stored in the rings. With a dedicated trigger 4M events are collected with BTOF and MTD systems both included with HV switched on.

The results are archived at this location: https://www4.rcf.bnl.gov/~geurts/noise/

Input data:

• TRG Setup: pedAsPhys_tcd_only
• Number of events: 4M
• Detectors: tof {mtd, etof} dan trg
• RHIC status: no beam
• Detector status: HV fully ramped up

recent example in STAR Runlog: Run 24151017

Ideally, shift crew note in the Shift Log that these runs are successfully executed TOF noise runs. Make sure to check the Shift Log and/or SlowControls to verify.

Potential error modes:

• HV was not ramped up (check slow controls status)
• Beam was still in RHIC or beam injection happened (check shift log or RHIC beam current info in slow controls)
• Not all relevant detectors have been included (check list of detectors for this run in Run Log)