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Re: CDC Layout



Hi Beni -

      the first concern is my fault, I attached the wrong versions of the 
endplate files to the email. The correct ones do agree at all layers. 
I will modify the code to provide the stereo angles , and add sig. digits
to the first table, and then recommunicate the information. 

       Curtis
On Mon March 2 2009, Beni Zihlmann wrote:
> Hi Yves,
> thanks for the clarification. I have one more question and one request:
> Question: the central radius in the first table agrees with the central 
> radius
>                 of the second and third table only for the first 4 
> layers. After that
>                 there is a difference between the values of column 3 
> (radius center)
>                 of the first table and  column 4 of the second and third 
> table (r_c).
>                 If this is correct then I do not understand what r_c means.
> 
> Request: could you also add to table two and three the actual values for 
> the stereo angles
>                in either rad or degree. When calculating the angles 
> using the values in the table
>                one gets rounding errors and they are significant when 
> taking an arcus tangens
>                from a ratio of already rounded values.
> 
> cheers,
> Beni
> 
> 
> > Hi Beni,
> >
> > Straw outer radius (OR) = 0.79375cm  OD = 1.5875 cm
> > Straw outer radius + 75um tolerance = 0.80125 or OD = 1.6025
> >
> > The program uses the OR + tolerance as actual OR to position the 
> > straws. That is why is sais global radius = 0.80125 cm. It is the 
> > radius it starts with. The program will vary the tolerence on the 
> > radius from 75-100 um to minimize the layer radius.
> >
> > 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
> >   ~~              ~~       \-----------------------------------
> >
> > On Sun, 1 Mar 2009, Beni Zihlmann wrote:
> >
> >> Hi Curtis,
> >> I see here one inconsistency.
> >> at point 1) the OD of a straw is given as 1.5875 cm but below
> >> in Global Information the Tube radius is given as 0.801250 cm ??
> >>
> >> cheers,
> >> Beni
> >>> Hi Everyone -
> >>>
> >>>   based on the dicsussions that we held this morning, Yves and I 
> >>> changed the layout rules for wire spacing. We now do the following:
> >>>
> >>>   1) Nominal Tube OD is 1.5875 cm
> >>>   2) We require a spacing of at least 150 microns and no more than
> >>>       200 microns between straws.
> >>>   3) We allowed layer 1 to move in from 10.95cm to 10.69 cm (wire
> >>>       position) --- 2.6 mm
> >>>
> >>> We can now get 28 layers with 3500 wires in the allocated space. The
> >>> wire position of the 28'th layer is at 54.488cm.
> >>>
> >>> If we loosen rule (2) to be 150 to 225, we can leave layer 1 at 10.95
> >>> cm, layer 28 will be at 54.737 and we will have 3528 wires. We pretty
> >>> much shifted things out by the 2.6 mm and picked up 28 channels.
> >>>
> >>> Unless people scream a lot, we would like to go with the first option
> >>> (3500 channels). The information on that is as given in the following.
> >>>
> >>> Curtis and Yves 
> >>> -------------------------------------------------------------------------------------------------------- 
> >>>
> >>> Global Information:
> >>>
> >>>  Tube radius: 0.801250
> >>> Instrumented Layers   is 28
> >>> Instrumented Channels is 3500
> >>> layer number radius(center) radius(plate) stereo
> >>>   $ 1$ & $ 42$ & $ 10.692$ & $ 10.692$ & $ 0.000$ & $ 10.692$ \\
> >>>   $ 2$ & $ 42$ & $ 12.046$ & $ 12.046$ & $ 0.000$ & $  1.354$ \\
> >>>   $ 3$ & $ 54$ & $ 13.757$ & $ 13.757$ & $ 0.000$ & $  1.711$ \\
> >>>   $ 4$ & $ 54$ & $ 15.119$ & $ 15.119$ & $ 0.000$ & $  1.362$ \\
> >>>   $ 5$ & $ 66$ & $ 16.913$ & $ 18.659$ & $ 0.105$ & $  1.794$ \\
> >>>   $ 6$ & $ 66$ & $ 18.288$ & $ 20.176$ & $ 0.113$ & $  1.375$ \\
> >>>   $ 7$ & $ 79$ & $ 20.312$ & $ 21.787$ & $ 0.105$ & $  2.024$ \\
> >>>   $ 8$ & $ 79$ & $ 21.694$ & $ 23.270$ & $ 0.112$ & $  1.383$ \\
> >>>   $ 9$ & $ 92$ & $ 23.600$ & $ 24.882$ & $-0.105$ & $  1.906$ \\
> >>>   $10$ & $ 92$ & $ 24.982$ & $ 26.338$ & $-0.111$ & $  1.382$ \\
> >>>   $11$ & $105$ & $ 26.919$ & $ 28.049$ & $-0.105$ & $  1.937$ \\
> >>>   $12$ & $105$ & $ 28.302$ & $ 29.490$ & $-0.110$ & $  1.383$ \\
> >>>   $13$ & $122$ & $ 31.124$ & $ 31.124$ & $ 0.000$ & $  2.822$ \\
> >>>   $14$ & $122$ & $ 32.502$ & $ 32.502$ & $ 0.000$ & $  1.378$ \\
> >>>   $15$ & $134$ & $ 34.170$ & $ 34.170$ & $ 0.000$ & $  1.668$ \\
> >>>   $16$ & $134$ & $ 35.548$ & $ 35.548$ & $ 0.000$ & $  1.378$ \\
> >>>   $17$ & $145$ & $ 37.179$ & $ 38.006$ & $-0.105$ & $  1.632$ \\
> >>>   $18$ & $145$ & $ 38.566$ & $ 39.423$ & $-0.109$ & $  1.386$ \\
> >>>   $19$ & $157$ & $ 40.272$ & $ 41.036$ & $-0.105$ & $  1.706$ \\
> >>>   $20$ & $157$ & $ 41.660$ & $ 42.450$ & $-0.108$ & $  1.388$ \\
> >>>   $21$ & $169$ & $ 43.351$ & $ 44.062$ & $ 0.105$ & $  1.691$ \\
> >>>   $22$ & $169$ & $ 44.739$ & $ 45.473$ & $ 0.108$ & $  1.388$ \\
> >>>   $23$ & $181$ & $ 46.421$ & $ 47.086$ & $ 0.105$ & $  1.682$ \\
> >>>   $24$ & $181$ & $ 47.810$ & $ 48.494$ & $ 0.108$ & $  1.389$ \\
> >>>   $25$ & $196$ & $ 50.116$ & $ 50.116$ & $ 0.000$ & $  2.306$ \\
> >>>   $26$ & $196$ & $ 51.501$ & $ 51.501$ & $ 0.000$ & $  1.385$ \\
> >>>   $27$ & $208$ & $ 53.105$ & $ 53.105$ & $ 0.000$ & $  1.605$ \\
> >>>   $28$ & $208$ & $ 54.488$ & $ 54.488$ & $ 0.000$ & $  1.383$ \\
> >>>
> >>>
> >>> --------------------------------------------------------------------------------------------------------------- 
> >>>
> >>> First hole in each layer (length in centimeters) Upstream Endplate 
> >>> (inside chamber)            (outside chamber)
> >>>  Lyr num  dPhi    r_c     r_p       x_p     y_p     z_p       
> >>> x_p     y_p z_p
> >>>   1  42 0.14960  10.6919  10.6919 ( 10.6919  0.0000   0.00 ) ( 
> >>> 10.6919 0.0000  -0.95 )
> >>>   2  42 0.14960  12.0460  12.0460 ( 12.0123  0.9002   0.00 ) ( 
> >>> 12.0123 0.9002  -0.95 )
> >>>   3  54 0.11636  13.7569  13.7569 ( 13.7470  0.5237   0.00 ) ( 
> >>> 13.7470 0.5237  -0.95 )
> >>>   4  54 0.11636  15.1191  15.1191 ( 15.0491  1.4530   0.00 ) ( 
> >>> 15.0491 1.4530  -0.95 )
> >>>   5  65 0.09666  16.7307  18.4941 ( 16.7307  7.8813   0.00 ) ( 
> >>> 16.7307 7.9814  -0.95 )
> >>>   6  65 0.09666  18.1112  20.0201 ( 17.6779  9.3967   0.00 ) ( 
> >>> 17.6726 9.5049  -0.95 )
> >>>   7  79 0.07953  20.2489  21.7286 ( 20.3732  7.5541   0.00 ) ( 
> >>> 20.3748 7.6542  -0.95 )
> >>>   8  79 0.07953  21.6272  23.2077 ( 21.4220  8.9270   0.00 ) ( 
> >>> 21.4195 9.0339  -0.95 )
> >>>   9  92 0.06830  23.5842  24.8663 ( 23.5842 -7.8813   0.00 ) ( 
> >>> 23.5842 -7.9814  -0.95 )
> >>>  10  92 0.06830  24.9651  26.3222 ( 25.2354 -7.4856   0.00 ) ( 
> >>> 25.2390 -7.5915  -0.95 )
> >>>  11 104 0.06042  26.8017  27.9365 ( 26.7313 -8.1169   0.00 ) ( 
> >>> 26.7304 -8.2170  -0.95 )
> >>>  12 104 0.06042  28.1916  29.3852 ( 28.3625 -7.6847   0.00 ) ( 
> >>> 28.3648 -7.7899  -0.95 )
> >>>  13 122 0.05150  31.2679  31.2679 ( 31.2662 -0.3247   0.00 ) ( 
> >>> 31.2662 -0.3247  -0.95 )
> >>>  14 122 0.05150  32.6520  32.6520 ( 32.6481  0.5017   0.00 ) ( 
> >>> 32.6481 0.5017  -0.95 )
> >>>  15 134 0.04689  34.2552  34.2552 ( 34.2544  0.2312   0.00 ) ( 
> >>> 34.2544 0.2312  -0.95 )
> >>>  16 134 0.04689  35.6366  35.6366 ( 35.6204  1.0758   0.00 ) ( 
> >>> 35.6204 1.0758  -0.95 )
> >>>  17 145 0.04333  37.2487  38.0733 ( 37.3593 -7.3388   0.00 ) ( 
> >>> 37.3608 -7.4389  -0.95 )
> >>>  18 145 0.04333  38.6376  39.4931 ( 38.9083 -6.7711   0.00 ) ( 
> >>> 38.9120 -6.8749  -0.95 )
> >>>  19 157 0.04002  40.3422  41.1049 ( 40.2962 -8.1133   0.00 ) ( 
> >>> 40.2957 -8.2134  -0.95 )
> >>>  20 157 0.04002  41.7323  42.5212 ( 41.8443 -7.5571   0.00 ) ( 
> >>> 41.8457 -7.6607  -0.95 )
> >>>  21 169 0.03718  43.4265  44.1359 ( 43.3664  8.2059   0.00 ) ( 
> >>> 43.3656 8.3060  -0.95 )
> >>>  22 169 0.03718  44.8172  45.5493 ( 44.5899  9.2992   0.00 ) ( 
> >>> 44.5872 9.4024  -0.95 )
> >>>  23 181 0.03471  46.4992  47.1624 ( 46.5878  7.3398   0.00 ) ( 
> >>> 46.5889 7.4399  -0.95 )
> >>>  24 181 0.03471  47.8901  48.5731 ( 47.8428  8.3910   0.00 ) ( 
> >>> 47.8422 8.4941  -0.95 )
> >>>  25 197 0.03189  50.4467  50.4467 ( 50.4439 -0.5335   0.00 ) ( 
> >>> 50.4439 -0.5335  -0.95 )
> >>>  26 197 0.03189  51.8336  51.8336 ( 51.8329  0.2784   0.00 ) ( 
> >>> 51.8329 0.2784  -0.95 )
> >>>  27 209 0.03006  53.4403  53.4403 ( 53.4393  0.3198   0.00 ) ( 
> >>> 53.4393 0.3198  -0.95 )
> >>>  28 209 0.03006  54.8255  54.8255 ( 54.8134  1.1521   0.00 ) ( 
> >>> 54.8134 1.1521  -0.95 )
> >>> First hole in each layer  (length in centimeter) Downstream Endplate 
> >>> (inside chamber)            (outside chamber)
> >>>  Lyr num  dPhi    r_c     r_p       x_p     y_p     z_p       
> >>> x_p     y_p z_p
> >>>   1  42 0.14960 10.6919 10.6919 ( 10.6919  0.0000 150.00 ) ( 10.6919 
> >>> 0.0000 150.60 )
> >>>   2  42 0.14960 12.0460 12.0460 ( 12.0123  0.9002 150.00 ) ( 12.0123 
> >>> 0.9002 150.60 )
> >>>   3  54 0.11636 13.7569 13.7569 ( 13.7470  0.5237 150.00 ) ( 13.7470 
> >>> 0.5237 150.60 )
> >>>   4  54 0.11636 15.1191 15.1191 ( 15.0491  1.4530 150.00 ) ( 15.0491 
> >>> 1.4530 150.60 )
> >>>   5  65 0.09666 16.7307 18.4941 ( 16.7307 -7.8813 150.00 ) ( 16.7307 
> >>> -7.9444 150.60 )
> >>>   6  65 0.09666 18.1112 20.0201 ( 18.5023 -7.6467 150.00 ) ( 18.5056 
> >>> -7.7148 150.60 )
> >>>   7  79 0.07953 20.2489 21.7286 ( 20.1193 -8.2065 150.00 ) ( 20.1183 
> >>> -8.2695 150.60 )
> >>>   8  79 0.07953 21.6272 23.2077 ( 21.8203 -7.9039 150.00 ) ( 21.8219 
> >>> -7.9712 150.60 )
> >>>   9  92 0.06830 23.5842 24.8663 ( 23.5842  7.8813 150.00 ) ( 23.5842 
> >>> 7.9444 150.60 )
> >>>  10  92 0.06830 24.9651 26.3222 ( 24.6657  9.1903 150.00 ) ( 24.6635 
> >>> 9.2570 150.60 )
> >>>  11 104 0.06042 26.8017 27.9365 ( 26.8700  7.6452 150.00 ) ( 26.8706 
> >>> 7.7082 150.60 )
> >>>  12 104 0.06042 28.1916 29.3852 ( 28.0076  8.8916 150.00 ) ( 28.0062 
> >>> 8.9579 150.60 )
> >>>  13 122 0.05150 31.2679 31.2679 ( 31.2662 -0.3247 150.00 ) ( 31.2662 
> >>> -0.3247 150.60 )
> >>>  14 122 0.05150 32.6520 32.6520 ( 32.6481  0.5017 150.00 ) ( 32.6481 
> >>> 0.5017 150.60 )
> >>>  15 134 0.04689 34.2552 34.2552 ( 34.2544  0.2312 150.00 ) ( 34.2544 
> >>> 0.2312 150.60 )
> >>>  16 134 0.04689 35.6366 35.6366 ( 35.6204  1.0758 150.00 ) ( 35.6204 
> >>> 1.0758 150.60 )
> >>>  17 145 0.04333 37.2487 38.0733 ( 37.1301  8.4222 150.00 ) ( 37.1292 
> >>> 8.4852 150.60 )
> >>>  18 145 0.04333 38.6376 39.4931 ( 38.3164  9.5686 150.00 ) ( 38.3140 
> >>> 9.6339 150.60 )
> >>>  19 157 0.04002 40.3422 41.1049 ( 40.3869  7.6491 150.00 ) ( 40.3873 
> >>> 7.7121 150.60 )
> >>>  20 157 0.04002 41.7323 42.5212 ( 41.6118  8.7470 150.00 ) ( 41.6109 
> >>> 8.8122 150.60 )
> >>>  21 169 0.03718 43.4265 44.1359 ( 43.4843 -7.5563 150.00 ) ( 43.4847 
> >>> -7.6193 150.60 )
> >>>  22 169 0.03718 44.8172 45.5493 ( 45.0140 -6.9627 150.00 ) ( 45.0156 
> >>> -7.0278 150.60 )
> >>>  23 181 0.03471 46.4992 47.1624 ( 46.4044 -8.4218 150.00 ) ( 46.4037 
> >>> -8.4848 150.60 )
> >>>  24 181 0.03471 47.8901 48.5731 ( 47.9357 -7.8429 150.00 ) ( 47.9361 
> >>> -7.9078 150.60 )
> >>>  25 197 0.03189 50.4467 50.4467 ( 50.4439 -0.5335 150.00 ) ( 50.4439 
> >>> -0.5335 150.60 )
> >>>  26 197 0.03189 51.8336 51.8336 ( 51.8329  0.2784 150.00 ) ( 51.8329 
> >>> 0.2784 150.60 )
> >>>  27 209 0.03006 53.4403 53.4403 ( 53.4393  0.3198 150.00 ) ( 53.4393 
> >>> 0.3198 150.60 )
> >>>  28 209 0.03006 54.8255 54.8255 ( 54.8134  1.1521 150.00 ) ( 54.8134 
> >>> 1.1521 150.60 )
> >>>
> >>>
> >>
> >>
> 
> 



-- 
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/