[Halld-klf-beam] [EXTERNAL] Re: KLF beamline meeting on Thursday, December 19th

[Amaryan, Moskov]

Hi Pavel,

Thanks for the clarifications.
As far as you reproduced the SLAC
results with the FLUKA it creates high
level of confidence to the FLUKA
simulations. Therefore, we have a clear reason to trust
 FLUKA simulation results for KLF beam flux of 6.8 kHz.
On this note I believe we arrived to the clear
conclusion about the flux for now, unless someone
proposes another clever idea that we haven't explored yet.

Compared to 10 kHz written in the proposal we
will have about 16% higher stat error.
It is unrealistic for any proposal to claim stat error
with a better precision.

p.s. I think you should share your plots reproducing the SLAC
measurements. Probably not everyone saw them.

Best regards,
Moskov.

 Dr. Moskov Amaryan
Eminent Scholar and Professor of Physics
Old Dominion University
Norfolk, VA 23529​

Phone: 757-683-4614
    Fax: 757-683-3038
________________________________
From: Pavel Degtiarenko <pavel at jlab.org>
Sent: Monday, December 23, 2024 10:07 PM
To: Amaryan, Moskov <MAmaryan at odu.edu>; hovanes at jlab.org <hovanes at jlab.org>; halld-klf-beam at jlab.org <halld-klf-beam at jlab.org>
Subject: Re: KLF beamline meeting on Thursday, December 19th


EXTERNAL to ODU: This email is not from an ODU account. Do not click links or open attachments unless you recognize the sender and know the content is safe.

Hi Moskov,

Yes, with the refinement that 6 cm beam pipe  inner diameter is from the end of the CuW plug until about half of the beam pipe, and 5.5 cm diameter for the downstream ~half of the pipe.

I should also note that the KL spectrum on HD target is expected to be different than the spectrum from the SLAC paper, more flat and more extended to higher energies. In that respect, the rate of 2 GeV/c KLs will probably be lower than expected and the rate of 4 GeV/c KLs will probably be higher.

Pavel
________________________________
From: Amaryan, Moskov <MAmaryan at odu.edu>
Sent: Monday, December 23, 2024 9:57 PM
To: Pavel Degtiarenko <pavel at jlab.org>; Hovanes Egiyan <hovanes at jlab.org>; halld-klf-beam at jlab.org <halld-klf-beam at jlab.org>
Subject: [EXTERNAL] Re: KLF beamline meeting on Thursday, December 19th

Pavel,

Once more, are you saying that with
20% radiator, 6 cm diameter and 14 cm
tungsten plug your number of the flux
is 6.8 kHz?

Best regards,
Moskov.


 Dr. Moskov Amaryan
Eminent Scholar and Professor of Physics
Old Dominion University
Norfolk, VA 23529​

Phone: 757-683-4614
    Fax: 757-683-3038
________________________________
From: Halld-klf-beam <halld-klf-beam-bounces at jlab.org> on behalf of Pavel Degtiarenko <pavel at jlab.org>
Sent: Monday, December 23, 2024 9:32 PM
To: hovanes at jlab.org <hovanes at jlab.org>; halld-klf-beam at jlab.org <halld-klf-beam at jlab.org>
Subject: Re: [Halld-klf-beam] KLF beamline meeting on Thursday, December 19th


EXTERNAL to ODU: This email is not from an ODU account. Do not click links or open attachments unless you recognize the sender and know the content is safe.

Hi All,
I apologize for the confusion, in the last presentation all plots and values are presented for the case of 20% radiator and 14 cm CuW block, not 10% radiator. I hadn't update the title properly. The number for KL flux for 10% and 10 cm CuW was close to that 6.8 kHz also from the previous calculations (with larger stat. errors). Sorry again.
Best regards,
Pavel
________________________________
From: Pavel Degtiarenko <pavel at jlab.org>
Sent: Thursday, December 19, 2024 10:41 AM
To: Hovanes Egiyan <hovanes at jlab.org>; halld-klf-beam at jlab.org <halld-klf-beam at jlab.org>
Subject: Re: KLF beamline meeting on Thursday, December 19th

Here's my today's presentation
Pavel

________________________________
From: Halld-klf-beam <halld-klf-beam-bounces at jlab.org> on behalf of Hovanes Egiyan <hovanes at jlab.org>
Sent: Tuesday, December 17, 2024 8:35 AM
To: halld-klf-beam at jlab.org <halld-klf-beam at jlab.org>
Subject: [Halld-klf-beam] KLF beamline meeting on Thursday, December 19th

Hi,

We will have a KLF beamline meeting on Thursday, December 19th , at 9am using Zoom (see information below). I posted the preliminary agenda of the meeting on the KLF wiki:

https://wiki.jlab.org/klproject/index.php/KLF_beamline_meeting_-_December_19,_2024

Please, feel free to add items to the agenda or let me know if you would like to discuss a topic.

Best,
      Hovanes.


Join ZoomGov Meeting
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