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Re: CDC Layout
On Fri, 27 Feb 2009, Fernando J. Barbosa wrote:
Dear Fernando and Curtis,
the 3500 straws will be an increase in cost. I have budget everythig for
3300, it will be 200 more. this means 25 asics, 8 more preamp-cards
HV-cards and 3 FADCc. I think it is not a big deal, but needs to be
accounted for. I'm not sure, but maybe at a certain moment we might want
to put in a CR to have things accounted correctly.
But I have a different question, I totally understand more layers are
nices for tracking, but do we get more problems with the cabeling. Because
we wil have to make even more connections on a limited space.
cheers elke
> Date: Fri, 27 Feb 2009 17:05:59 -0500
> From: Fernando J. Barbosa <barbosa@jlab.org>
> To: Curtis A. Meyer <cmeyer@ernest.phys.cmu.edu>
> Cc: GlueX Tracking <tracking@gluex.org>, Vladislav Razmyslovich <vgr@jlab.org>
> Subject: Re: CDC Layout
>
> Hi Curtis,
>
> Just to check the numbers, the 3,500 channels correspond to 146 preamp cards
> or an increase of 16 preamp cards over the previous number (130). This
> implies an additional 16 HV channels (1 module of A1535P), 6 additional
> fADC125's and possibly an additional VXS crate. This requires $35k-$45k in
> additional funds for the electronics.
>
> Best regards,
> Fernando
>
>
>
> Curtis A. Meyer wrote:
>> 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 )
>>
>>
( `,_' )+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=-+=
) `\ -
/ '. | +
| `, Elke-Caroline Aschenauer =
\,_ `-/ -
,&&&&&V Brookhaven National Lab +
,&&&&&&&&: Physics Dept., 121-A Atlantic Avenue =
,&&&&&&&&&&; Bldg. 510D / 1-59 Hampton, VA 23664 -
| |&&&&&&&;\ 20 Pennsylvania Avenue +
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| | ;--' | Mail: elke@bnl.gov Mobil: 001-757-256-5224 -
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begin:vcard
fn:Fernando J. Barbosa
n:Barbosa;Fernando J.
org:Jefferson Lab
adr:Suite #10, 12B3;;12000 Jefferson Ave.;Newport News;VA;23606;USA
tel;work:757-269-7433
version:2.1
end:vcard
- References:
- CDC Layout
- From: "Curtis A. Meyer" <cmeyer@ernest.phys.cmu.edu>
- Re: CDC Layout
- From: "Fernando J. Barbosa" <barbosa@jlab.org>