Mat, Gavin, Jim, Fernanda, Louise, pseudo-Michael
Near Detector Hardware List¶
ND has moved under operations control. List to be provided to Rob Plunkett going forward.
The ND OnMon plots is showing that the timing distribution has a odd rounded shoulder and not the drop off that is normal.
5th September is when beam is nominally shutdown.
Monday 8th September is when work is planned.
How long does detector take to settle now we have cooling post power outage? A week roughly post interlocks.
What is state of Hardware Watch list for Near Detector?
Fernanda: Couple of days before it is in keep-up. Formatting issues with website, but can postpone this in interest of getting spreadsheet info available.
Jim: List has been a running average of a weeks worth of data to avoid transient issues of noisy/non-reporting that drop out temporarily.
Louise needs the spreadsheet list of noisy/dead hardware.
Jim: Longer term we'll use an issue tracking formalism. Flag bad FEBs and close issue once fixed.
Mat: The list we produce is by going through the noisy/bad FEB lists.
We'll make a first ND list next week.
ND Timing peak¶
Louise reported that the ND OnMon plots is showing that the timing distribution has an odd rounded shoulder and not the drop off that is normal.
Picture from OnMon is from two minutes ago. Will it show up in Nearline pictures? If it doesn't then dispatcher is the cause.
If Dispatcher gets stuck saving same event repeatedly it could cause the shoulder that is observed in the timing peak.
If it appears in nearline then presumably data logger was recording repeated events.