View source for May 4th 2022

*Updates
**HCAL
***Bryan booted the VTPs and working on readout list for VTP
***Ben 10 gigE transceiver, Alexandre plugged the fibers to router
***VTP library and initial readout list setup, few configurations files need to be updated, switch to add to the flash readout list, maybe test in a few days
**Hodoscope
***Glasgow people coming in summer
***might still need to take data for ToT calibration with FADC
**GEM
***one layer taken out from BB, will replace HV parallel power supply
***can other detector be turned on ? HV GEM off so can take cosmics
**Shower : get ready to take cosmics again
**made configuration without GEM with 2 and 3 event builders
**HV
***HV software working with RPi4


*Discussion multiple streams
** testing DAQ setup https://logbooks.jlab.org/entry/3992794
**want to add second DC
**online monitoring
**EPICS/scaler insertion : would like to insert in all the streams ? Right now only going in one stream - ev
***3 streams : 3 to 1 split - evenly
***open 3 files at same time - and make one stream ? ( need software work )
***or put back 3 streams in one and feed existing software

**Helicity info insertion - Paul has readout list to test with ring buffer 
***if in time can record in register - 
*** new helicity board should be avalaible : can record helicity event by event
*** use the scaler and event register 
*** needs helicity event ? 
***only one stream of event number - unique 
***Ole could try to open 3 streams and produce one stream - small snag : number of event could be different 
***input class taking all segments to present to analyzer , so could adapt class for multiple streams
**charge feedback ? with multistream - use parity DAQ so most likely ok- could use scalers but less precise - Could set up QWeak - Parity DAQ using CODA 2.6 - ET would be broken for CODA 3 - but existing should be fine for feedback

**software required changes to handle multiple stream files
**make sure some headers are in all stream : control events written to all 3 streams
**feature used by Hall D, every time new split file , one event can be recorded in each new BOR
**can write to one stream by selecting the ET system  where EB runs

*Channel counts for GEM per plan : Alex will get ( from Kondo presention )

*GEn ERR : option to have GEM SBS was not on ERR - 20 or 30 lower luminosity

*GEn RP : had all the GEMs -