[Tdis] [EXTERNAL] Re: question on C12-15-006

Wed Jul 19 12:27:18 EDT 2023

Dear Dipangkar

Thank you for putting this together; the responses look good (and sorry I was unable to join the meeting this morning)

If it helps, for the collaboration question, please feel free to add the following: "The detector fabrication capabilities of the UVa group,  which is undertaking the fabrication of MTPC prototypes as well as the final detector,  have also grown since the original proposal; this group now includes, in addition to the PI, a senior research scientist, two post-docs, six graduate students, a detector technician and two undergraduate RAs"

Also, in case there is a question about track occupancy during the PAC meeting: as I suggested yesterday, please have a backup slide ready to show at the PAC with the new higher rate, wire based mTPC idea Bogdan suggeted,  which  we are exploring now. My student Jacob, who is working on this with Huong now, will be able to provide you with some really nice CAD figures of this before the PAC.

Best

Nilanga
________________________________
From: Dipangkar Dutta <d.dutta at msstate.edu>
Sent: Wednesday, July 19, 2023 11:04 AM
To: tdis at jlab.org <tdis at jlab.org>; Horn, Tanja <hornt at cua.edu>; John Arrington <jarrington at lbl.gov>; Shujie Li <shujie at jlab.org>; Fomin, Nadia <nfomin at utk.edu>; Duran, Burcu <bduran at utk.edu>; Arun Tadepalli <arunts at jlab.org>; Eric Fuchey <efuchey at jlab.org>; Carlos Ayerbe Gayoso <gayoso at jlab.org>; Rachel Montgomery <Rachel.Montgomery at glasgow.ac.uk>; Paul M. King <pking at jlab.org>; Cynthia Keppel <keppel at jlab.org>; Liyanage, Nilanga K (nl8n) <nl8n at virginia.edu>; Eric Christy <christy at jlab.org>; Aruni Nadeeshani <aruninadeeshani at gmail.com>; Nguyen, Huong Thi (htn3r) <htn3r at virginia.edu>
Subject: Re: question on C12-15-006

Dear TDIS collaborators,
Please find attached a draft response to the questions from the PAC
reader on the TDIS jeopardy update.
Please send us your comments and corrections. We hope to submit it by
the end of the day today, or if there are substantial changes by early
tomorrow morning.
Cheers
Dipangkar

On Mon, Jul 17, 2023 at 11:20 AM Dipangkar Dutta <d.dutta at msstate.edu> wrote:
>
> Hi Everybody,
> Here are the questions from the reader. I will start an overleaf
> document and start populating the answers.
>  We may need to have a meeting on Wednesday to discuss the answers.
> Cheers
> Dipangkar
>
>
> ---------- Forwarded message ---------
> From: Geralyn Zeller <gzeller at fnal.gov>
> Date: Mon, Jul 17, 2023 at 8:50 AM
> Subject: question on C12-15-006
> To: d.dutta at msstate.edu <d.dutta at msstate.edu>
> Cc: markus.diehl at desy.de <markus.diehl at desy.de>, mcontalb at fe.infn.it
> <mcontalb at fe.infn.it>
>
>
> Dear Dipangkar,
>
>
>
> Thank you for the update to CR-15-006: Measurement of Tagged Deep
> Inelastic Scattering. In preparing for PAC51, we are hoping you and
> your colleagues on TDIS could also kindly respond to the following
> questions:
>
>
>
> How has the TDIS collaboration evolved since this experiment was first
> proposed to today? Have there been any significant changes to the
> number of institutions, staff, or prospective students?
>
>
>
> Could you please say more about the needs and plans for the additional
> 33 days of operations? Specifically:
>
> For the 13 day engineering run, it is understood that the beam
> luminosity will be increased in stages. How many days of running are
> needed at each stage? How will the optimal luminosity be determined?
> For the additional 20 days of running to support pion and kaon SF
> measurements, how was the duration of 20 days arrived at? What
> improvement in physics measurement capability is expected with 20
> additional days of data-taking? Is it possible to couple this
> additional 20 days to a quantitative measure of added physics
> performance?
>
>
>
> The detector redesign and associated prototyping effort that has taken
> place since the experiment was first proposed is both impressive and
> important. What is the approximate expected timeline for obtaining
> results from the two detector prototypes? The first detector prototype
> will take data in Hall A at JLAB and at Fermilab this fall: what about
> the second prototype? When is it expected to be operated and where?
> Could you please comment on roughly when you expect to have results
> from this full complement of detector prototypes?
>
>
>
> We note that the previous PAC commented that the choice of a 4.7 T
> solenoid magnetic field may not be optimal for the lowest momenta
> recoil protons. How has this been addressed? Has the performance for
> low momenta protons in this B field been studied in simulation?
>
>
>
> It is mentioned in the update that new developments in TDIS theory
> since 2015 have resulted in an expected increase in the TDIS signal
> yield. Could you please give a rough sense of how much larger a signal
> rate is expected based on these new developments?
>
>
>
> Thank you for providing links to the white and yellow papers, but is
> it possible to please elaborate on the ~50 new publications that have
> bolstered interest in the TDIS run group of experiments: is it
> possible to provide a list of these publications?
>
>
>
> Thanks and looking forward to your presentation on the 26th,
>
>
>
> Sam Zeller
>
> Senior Scientist
>
> Deputy Project Director for LBNF/DUNE-US Near Detector
>
>
>
> LBNF/DUNE-US Division
>
> Fermi National Accelerator Laboratory
>
> (630) 840-6879 office
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