[Halld-klf] [EXTERNAL] Re: KL beam line check

[Igor Strakovsky]

Beni,

I do not know how you did your simulations but the bottom line is they
disagree with what we have in our proposal.
The size of the Be-target and W-plug were optimized to allow 3x10^4 KL/sec
to reach cryo target

Cheers, Igor

On Mon, Dec 11, 2023 at 4:55 PM Beni Zihlmann <zihlmann at jlab.org> wrote:

> Attached you find a short note about simulating Klong beam in the
> Be-production
> target and test how many may reach the liquid hydrogen target.
> As you can see the transmission rate is below 10% for any Klong below
> 2000MeV/c
>
> Also it looks like it is very important to have good shielding along the
> beam line
> all the way from the start of the beam line to the exit of the alcove
> and also
> before the cryogenic target to prevent particles from entering the CDC gong
> along z over the full length of the CDC. such particles are devastating
> for CDC
> operation.
>
> cheers,
> Beni_______________________________________________
> Halld-klf mailing list
> Halld-klf at jlab.org
> https://mailman.jlab.org/mailman/listinfo/halld-klf
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/halld-klf/attachments/20231211/a62de805/attachment.html>