Project

General

Profile

Running while beam is off

In general, we continue running the experiment even during extended periods when the beam is off. This is to collect external trigger (cosmic) data.

Tests and work on the detector

Some tests and work on the detector will be done during extended beam down-times. Be sure to check the run plan often for information about these activities.

Alarms

Many alarm parameters will become invalid or go into minor or major alarm status when beam is off. Below is a list of all the ones previously observed. Some of these will occur immediately, and some will turn on after the beam has been off for 24 hours.

If any of these appear when it is in the run plan that the beam is off for an extended period, then they can be acknowledged. You do not need to notify the run coordinators or on-call experts.

Alarm Status
uB_BeamData_BEAM_BNB_VPTG2/position INVALID
uB_BeamData_BEAM_BNB_VPTG1/position INVALID
uB_BeamData_BEAM_BNB_VP875/position INVALID
uB_BeamData_BEAM_BNB_TOR875/protons INVALID
uB_BeamData_BEAM_BNB_TOR860/timestamp INVALID
uB_BeamData_BEAM_BNB_TOR860/protons INVALID
uB_BeamData_BEAM_BNB_THCURR/current INVALID
uB_BeamData_BEAM_BNB_THCURR/curr_beamon INVALID
uB_BeamData_BEAM_BNB_REQMBE/req_rate INVALID
uB_BeamData_BEAM_BNB_MBRATE/p_per_hour INVALID
uB_BeamData_BEAM_BNB_MBPRTE/act_rate INVALID
uB_BeamData_BEAM_BNB_HWTOUT/temperature INVALID
uB_BeamData_BEAM_BNB_HPTG2/position INVALID
uB_BeamData_BEAM_BNB_HPTG1/position INVALID
uB_BeamData_BEAM_BNB_HP875/position INVALID
uB_BeamData_BEAM_BNB_BTJT2/temperature INVALID
uB_BeamData_BEAM_BNB_BTH2T2/temperature INVALID
uB_BeamData_BEAM_BNB_BNBHT4/temperature_degF INVALID
uB_BeamData_BEAM_BNB_BNBHT1/temperature_degF INVALID
uB_BeamData_BEAM_BNB/Age INVALID
uB_DAQStatus_DAQX_evb/SoftTrig_NUMI_unbiased_vs_Raw MINOR
uB_DAQStatus_DAQX_evb/SoftTrig_NUMI_FEMBeamTrig_vs_Raw MINOR
uB_DAQStatus_DAQX_evb/SoftTrig_BNB_unbiased_vs_Raw MINOR
uB_DAQStatus_DAQX_evb/SoftTrig_BNB_FEMBeam_vs_Raw MINOR
uB_DAQStatus_CRTDAQX_evb/ts1ok MINOR

A "big red box" warning may appear in the online monitor due to the BNB RWM Timing or NuMI RWM Timing. This is also expected and is not cause for concern when the beam is off.

If any of these appear when it is in the run plan that the beam is off for an extended period, then they can be acknowledged. You do not need to notify the run coordinators or on-call experts.