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Re: Talk 2: v3



On Sun, 23 Mar 2008, Curtis A. Meyer wrote:

look, I gave only a start point of a www page for the panda design, I can
search more and contact people. But there is also a link to the cdr from
2005, I'm sure more than what is on this table is discussed.
I will take care to get you more info.

Curtis, I'm not sure a historical approach is a good one. Yes DOE is not
great, I totally agree you can be sure of that. But that cannot be a
argument for a slide discussing design.

bye bye and good night
elke


> Date: Sun, 23 Mar 2008 21:53:01 -0400
> From: Curtis A. Meyer <cmeyer@ernest.phys.cmu.edu>
> To: Elke-Caroline Aschenauer <elke@jlab.org>
> Cc: Yves Van Haarlem <yvhaarle@ernest.phys.cmu.edu>, halld-pid@jlab.org,
>      GlueX Tracking <halld-tracking-hw@jlab.org>
> Subject: Re: Talk 2: v3
>
> Hi Elke -
>
> On Sun March 23 2008, Elke-Caroline Aschenauer wrote:
> > On Sat, 22 Mar 2008, Yves Van Haarlem wrote:
> >
> > Dear Yves,
> >
> > I have some small remarks still to your slides.
> >
> > slide 4:
> > I don't think it is true it is mainly protons which go to the CDC.
> >
> > it is not clear to me what the points path  length and energy deposition
> > should indicate. if you want to say that that is what is measured, than
> > that is really obvious if I do dE/dx ;)
> >
> > the 3rd item Need:
> > hm, this numbers really fall from heaven here, they have especially no
> > relation to anything before.
> > Especially the sigma_z is difficult, because i think we show not one plots
> > which proofs that we reach this and what it does on the physics.
> > I would also rename it to performance Goals. Actaully the whole slide is
> > better titled like that.
> >
>
>    sadly, we also have to look at the history of what DOE and JLab has done to us
> by dragging out this project as long as it has been. The reality is that when we started
> with all of this eight years ago, for a finite budget and what we felt that we could do at
> CMU, these were perfectly reasonable comparisons. A 1.5cm think Al endplate of the
> area that we talked about for the CDC would be needed to support the 5000kg load.
> The project moved forward with R&D in this regard. Now here we are 8 years later.
>
>    If I look at PANDA, they are going with 150cm long straws for the same
> purpose as us, their so-called straw-tube tracker. Though from the numbers
> posted on their web site, it is difficult to tell what the actual dimensions are,
> other than they claim 150micron position resoultion (r-phi) and 1mm z from
> stereo. They base this design on a WASA design (also straw tubes).
>
>
> -- Curtis
> > slide 6:
> > I think that remark is more for curtis, crystal Barrel was a nice
> > experiment, but like E852 stopped data taking last century ;) Is this
> > really the best comparision to make.
> > How about to look here http://www-panda.gsi.de/auto/_home.htm
> > and the wasa experience.
> >
> > slide 19, I still think this slide is slightly misplaced, either it should
> > go infront of the safety slide or actually to the prototype, because there
> > you use it.
> >
> >
> > cheers elke
> >
> >
> >
> >
> >
> > > Date: Sat, 22 Mar 2008 00:10:00 -0400 (EDT)
> > > From: Yves Van Haarlem <yvhaarle@ernest.phys.cmu.edu>
> > > To: halld-pid@jlab.org, GlueX Tracking <halld-tracking-hw@jlab.org>
> > > Subject: Talk 2: v3
> > >
> > > Hall D PID Mail List:
> > >
> > > Hi All,
> > >
> > > While students are playing capture the flag and singing songs in the
> > > building I prepared version 3 of talk 2. It can be found on the usual wiki
> > > page and is waiting for your comments.
> > >
> > > Plots that I do not have but were requested during the dry run:
> > >
> > > 1 - Radiation length plot for a 90 and a 20 degree track (for slide 6)
> > > 2 - dE/dx plot with no correction for distance, I was told this plot
> > > already exists (for slide 27)
> > >
> > > David could you provide a link to these plots?
> > >
> > > Thanks!
> > >
> > >
> > > Cheers,
> > >  	Yves
> > >
> > >
> > > ps. You can also use this link:
> > >  	http://www-meg.phys.cmu.edu/~yvhaarle/cdctalk.pdf
> > >
> > >
> > >                            /--------------------------------
> > >                           /   Yves Van Haarlem
> > >         _--~~--_         /
> > >       /~/_|  |_\~\      /      Carnegie Mellon University
> > >      |____________|    /        Department of Physics
> > >      |[][][][][][]|:= /          Wean Hall room 8404
> > >    __| __         |__ \       	 Pittsburgh, PA 15213
> > >   |  ||. |   ==   |  | \           USA
> > > (|  ||__|   ==   |  |) \
> > >   |  |[] []  ==   |  |   \   	    Tel.:   +1 412 268-6949
> > >   |  |____________|  |    \                  +1 412 641-9252
> > >   /__\            /__\     \	      Fax.: +1 412 681-0648
> > >    ~~              ~~       \-----------------------------------
> > >
> > > On Wed, 19 Mar 2008, Yves Van Haarlem wrote:
> > >
> > > > Hi All,
> > > >
> > > > The updated version of talk 2 is now available on the wiki page:
> > > >
> > > > http://www.jlab.org/Hall-D/software/wiki/index.php/DC_and_PID_Review
> > > >
> > > >
> > > > Cheers,
> > > > 	Yves
> > > >
> > > >                          /--------------------------------
> > > >                         /   Yves Van Haarlem
> > > >       _--~~--_         /
> > > >     /~/_|  |_\~\      /      Carnegie Mellon University
> > > >    |____________|    /        Department of Physics
> > > >    |[][][][][][]|:= /          Wean Hall room 8404
> > > >  __| __         |__ \       	 Pittsburgh, PA 15213
> > > > |  ||. |   ==   |  | \           USA
> > > > (|  ||__|   ==   |  |) \
> > > > |  |[] []  ==   |  |   \   	    Tel.:   +1 412 268-6949
> > > > |  |____________|  |    \                  +1 412 641-9252
> > > > /__\            /__\     \	      Fax.: +1 412 681-0648
> > > >  ~~              ~~       \-----------------------------------
> > > >
> > >
> >
> >  ( `,_' )+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=
> >   )    `\                                                  -
> >  /    '. |                                                  +
> >  |       `,              Elke-Caroline Aschenauer            =
> >   \,_  `-/                                                    -
> >   ,&&&&&V         Jefferson Lab                                +
> >  ,&&&&&&&&:       HALL-D 12C / F381       121-A Atlantic Avenue =
> > ,&&&&&&&&&&;      Suite 8                 Hampton, VA 23664      -
> > |  |&&&&&&&;\     12000 Jefferson Ave                             +
> > |  |       :_) _  Newport News, VA 23606  Tel.:  001-757-224-1216  =
> > |  |       ;--' | Mail:  elke@jlab.org    Mobil: 001-757-256-5224   -
> > '--'   `-.--.   |                                                    +
> >    \_    |  |---' Tel.:  001-757-269-5352                             =
> >      `-._\__/     Fax.:  001-757-269-6331                              -
> >             +=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+
> >
>
>
>
> --
> Professor Curtis A. Meyer        Department of Physics
> Phone:  (412) 268-2745          Carnegie Mellon University
> Fax:    (412) 681-0648            Pittsburgh PA 15213-3890
> cmeyer@ernest.phys.cmu.edu  http://www.curtismeyer.com/
>

 ( `,_' )+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=
  )    `\                                                  -
 /    '. |                                                  +
 |       `,              Elke-Caroline Aschenauer            =
  \,_  `-/                                                    -
  ,&&&&&V         Jefferson Lab                                +
 ,&&&&&&&&:       HALL-D 12C / F381       121-A Atlantic Avenue =
,&&&&&&&&&&;      Suite 8                 Hampton, VA 23664      -
|  |&&&&&&&;\     12000 Jefferson Ave                             +
|  |       :_) _  Newport News, VA 23606  Tel.:  001-757-224-1216  =
|  |       ;--' | Mail:  elke@jlab.org    Mobil: 001-757-256-5224   -
'--'   `-.--.   |                                                    +
   \_    |  |---' Tel.:  001-757-269-5352                             =
     `-._\__/     Fax.:  001-757-269-6331                              -
            +=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+