Difference between revisions of "Cables and Crates"

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(VXS crate layout)
(Possible rearranging of cables)
 
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[https://halldweb.jlab.org/detectors/fcal2/cables/fcal_rows.pdf List of modules in the FCAL & FCAL2]
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* [https://halldweb.jlab.org/detectors/fcal2/cables/fcal_rows.pdf List of modules in the FCAL & FCAL2]
  
 
== VXS crate layout ==
 
== VXS crate layout ==
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Image:fcal_crates.png  | Fig. 1 Twelve FCAL VXS crates
 
Image:fcal_crates.png  | Fig. 1 Twelve FCAL VXS crates
Image:fcal_vxs_crates.png | Fig. 2 Connection of FCAL signal cables to 12 VXS crates
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Image:fcal_vxs_crates.png | Fig. 2 Connection of FCAL signal cables to 12 VXS crates. Red box denotes the FCAL insert region.
Image:fcal_crates_north.png | Fig. 3 Six FCAL crates on the north side
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Image:fcal_crates_north.png | Fig. 3 Six FCAL crates on the north side. Circles denote crates connected to the FCAL2 insert region.
Image:fcal_crates_south.png  | Fig. 4 Six FCAL crates on the south side
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Image:fcal_crates_south.png  | Fig. 4 Six FCAL crates on the south side. Circles denote crates connected to the FCAL2 insert region.
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== VXS crates connected to the FCAL2 insert region ==
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Image: rocfcal2_adc.png  |  Fig. 1  ADC channel assignment (rocfcal2,  north)
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Image: rocfcal5_adc.png  |  Fig. 2  ADC channel assignment (rocfcal5,  north)
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Image: rocfcal8_adc.png  |  Fig. 3  ADC channel assignment (rocfcal8,  south)
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Image: rocfcal11_adc.png |  Fig. 4  ADC channel assignment (rocfcal11, south)
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* Blue region corresponds to ADC channels connected to the FCAL2 insert region (21x21 lead glass modules). Yellow boxes correspond to channels connected to the region outside the insert.
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* 108 ADC channels in each of four crates are connected to the insert region
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* 238 ADC channels are used in each crate
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== Possible rearranging of cables  ==
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* Move 108 channels from the rocfcal2 (rocfcal8)  crate connected to the insert to the rocfcal5 (rocfcal11) crate. The total number of channels in this crate: 108 + 108 = 216 (connect to 14 FADCs), see Fig. 1
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* Move 126 channels in the rocfcal5 (rocfcal11)  crate connected to the insert to the rocfcal2 (rocfcal8) crate. The total number of channels in this crate: 130 (remaining) + 126 = 256 (connect to 16 FADCs), see Fig. 2. Connect 4 remaining cables to other crates, see Fig. 3
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Image:rocfcal5_new_cables.png | Fig. 1 rocfcal5 crate after re-cabling (216 channels, connected to all FCAL insert modules)
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Image:rocfcal2_new_cables.png | Fig. 2 rocfcal2 crate after re-cabling (256 channels, connected to all lead glass modules)
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Image:rocfcal4_adc.png | Fig. 3 rocfcal4 connect 4 lead glass channels to the new flash in Slot 19
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Latest revision as of 16:42, 26 October 2022

Calorimeter Layout

VXS crate layout

VXS crates connected to the FCAL2 insert region

  • Blue region corresponds to ADC channels connected to the FCAL2 insert region (21x21 lead glass modules). Yellow boxes correspond to channels connected to the region outside the insert.
  • 108 ADC channels in each of four crates are connected to the insert region
  • 238 ADC channels are used in each crate

Possible rearranging of cables

  • Move 108 channels from the rocfcal2 (rocfcal8) crate connected to the insert to the rocfcal5 (rocfcal11) crate. The total number of channels in this crate: 108 + 108 = 216 (connect to 14 FADCs), see Fig. 1
  • Move 126 channels in the rocfcal5 (rocfcal11) crate connected to the insert to the rocfcal2 (rocfcal8) crate. The total number of channels in this crate: 130 (remaining) + 126 = 256 (connect to 16 FADCs), see Fig. 2. Connect 4 remaining cables to other crates, see Fig. 3