RE: Muon-On-Request

[Michael Barnes <barnes@triumf.ca>]

Dear Peter,

I don't understand the relative timing shown in the elog. I expected the
kicker to contribute approx. 250ns of delay: Francoise measured 280ns
(from the input to the TRIUMF splitter to the rise of deflector plate
voltage). So there is a discrepancy of 170ns --- but, given Francoise's
measurements (which are in the same ball park as my expectations), this
discrepancy is not due to the kicker.

I would recommend that you check the relative cable delays, the length of
the cable to the TRIUMF TTL splitter, and the deskewing of the channels of
the oscilloscope.
What is the time of flight from the deflector plates to the detector (and
how fast are the discriminators/electronics)?.

Cheers,
Mike

> Dear Mike,
>
> Thanks very much for the detailed explanation. Based on that we
> should be able to estimate the effect for our different running
> conditions. From our data we also should be able to see what
> difference it makes, if any.
>
> I have posted first Muon-On-Request info in elog
> http://kaon.physics.berkeley.edu:8080/run9/187
>
> user: muon
> passwd: 10-5soon
>
> Actually the switching delay seems longer than anticipated, but
> still accepatable.
>
> With best regards
>
> Peter
>
>
>