As prompted by Fracesco Berni, I checked the status of red or yellow DMS "Environment" flags which shoud be recovered/understood for the start of the Commissioning.
Here the list of "red" flags and "prescriptions" to recover the good working condition:
DMS flag | Channels | Comment | Prescription (suggested action) |
Lights | INF_CEB_LUX_100 | the flag has been yellow since two weeks at least | Check for lights on in CEB hall. In case lights are off, possible that the thresholds changed after the illumination upgrade and in case need retuning. |
DeadChannels | ENV_EIB_ACC_Z | the sensor is working OK, the red condition is due to the fact that when EIB-SAS is floating the RMS seismc noise is actually lower | Reduce dead channel threshold to 1E-5 |
DeadChannels | ENV_LB_SEIS_X(Y,Z) | the episensor on Laser bench is now disconnected (see elog 40804) utill a suited location is found on the bench itself | SHELVE the flag for 2 weeks (refer to this elog) |
DeadChannels | ENV_MCB_IPS(UPS)_CURR_R,S,T | The sensors are OFF since March 1st | Go in MCB and check the driver box of the current monitors (on East wall) ... possible that it is powered off. |
DeadChannels | ENV_NE_CT_ACC_Z | The sensor is working OK, It happened that a noisy seismic source switched off around 10:30 UTC today (March 19) | Reduce dead channel threshold to 1E-4 |
NE_Hall | ENV_NEB_MAG_N(W,V) | since March 16 8:20 UTC the 50Hz noise increased by almost 10 nT (jumped from 6pT to 15pT). But the sensors are not saturating since they are now desensitized (elog 40540, Feb 2) |
Investigate possible source, ask VAC team first also check if Magnetometers have been accidentally displaced.... |
DET_Area | ENV_EDB_ACC_Z | Noise has increased since last Thursday (March 15 around 10UTC). Looks like some extra noise source is on inside the Det LAB (also the microphone sees extra noise). Peaks at 122, 195, 219 ... 100, 200, 400 Hz. | Investigate source, SQZ team first... |
CEB Hall | ENV_DT_ACC_Z | it is slightly above threshold since March 15, can be related to previous item. | can slighlty increase threshold from 4.5E-3 to 5.5E-3 |