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Archived Messages for CLAS_TOF_1997@cebaf.gov: Re: The MAP for SC.

Re: The MAP for SC.

Simon Taylor (staylor@CEBAF.GOV)
Wed, 12 Nov 1997 21:51:38 -0500 (EST)

On Wed, 12 Nov 1997, Maurik Holtrop wrote:

>
> Hello TOF,
>
> I just checked the current contends of the MAP, and I have to admit I am a
> little confused with the increase in items. Mostly, could somebody explain
> the following arrays:
>
> TSIG0

This the measured resolution of each time-of-flight counter (correct me if
I'm wrong, Elton).

> TSIG1

This the second moment of the above.

> T_LR0

This is a left-right time offset parameter for time-matching within a
paddle.

> T_c2c ( My guess: a time offset derived from counter to counter
> calibrations.)
>

That is correct.

> M0 and M0u

M0 is the energy calibration value, being the position in ADC channels at
which normally incident minimum-ionizing particles show up. M0u is the
uncertainty in this number.

> STATUS ( Some error status, I'd like to know what goes in and whether
> pedestals or TDCcal should update it. )
>
I believe this has yet to be decided.

> lambda

This is the attenuation length of the paddle.

> veff
>

This is the effective speed of light in the plastic.

> Thanks a lot,
>
> Maurik
>
>
You're welcome.

Simon.