[Halld-cpp] [EXTERNAL] Re: [Revised Logentry] fmwpc wave forms

[miskimen]

Beni, generally I think this looks fairly good, comparable to what we saw in the EEL during initial stages of testing where we took our very best test data.   Sometimes you’ll the signal swing small negative before the big positive swing.  I think the negative swing is due to an avalanche on an adjacent wire. In MWPCs this causes a negative induced pulse on the adjacent wire.   Rory


Sent from my iPad

> On Apr 26, 2022, at 4:15 PM, zihlmann at jlab.org wrote:
> 
> 
> fmwpc wave forms
> 
> Edit
> Delete
> Lognumber 3992071. Submitted by zihlmann on Tue, 04/26/2022 - 16:05.
> Last updated on Tue, 04/26/2022 - 16:09
> Logbooks:	HDFMWPC HDLOG
> Attached Files:	
> fmwpc_event_2045098.pdf
> fmwpc_event_2044639.pdf
> fmwpc_event_2044393.pdf
> fmwpc_event_2042912.pdf
> fmwpc_event_2041841.pdf
> fmwpc_event_2041366.pdf
> the attached files show some examples of events with wave forms from the FMWPC
> detector.
> One example shows that there is still some noise at times.
> An other issue may be that some signals show significant voltage drops before the actual rise of the main pulse.
> same color means same wire chamber.
> red,green,blue,yellow,pink,cyan (chambers 1,2,3,4,5,6)
> 
> all this is based on data from run 100101:
> /gluex/data/rawdata/all/Run100101/hd_rawdata_100101_001.evio
> 
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