TJNAF HALL A HRS DETECTOR SYSTEMS
Last Updated: October 30, 1996
Angle of Beam Envelope (from Tosca fields);
- Transverse - 3.50deg off of Z axis - 7.00deg total
- Dispersive - "-" or "up" 7.93deg
"+" or "down" 6.35deg
VDCs:
- 368 wires per plane / 4 planes per spectr. (UV + UV)
- 2944 wires total for both spectrometers
- no guard wires
- UV wire orientation (45 degrees relative to frame)
- 4.23 mm wire spacing (6 mm along frame edge)
- 20um Au plated Tungsten sense wires
-
- Beam envelope dimensions:
- VDC1: Transverse: +/- 56.6mm
- Dispersive: +596.0mm, -582.7mm
-
- Size of envelope at VDC: 113.0 mm X 1667.0 mm
- VDC2: Transverse: +/- 85.3mm
- Dispersive +658.7mm, -643.9mm
-
- Size of envelope at VDC: 170.6 mm X 1842.2 mm
- VDC1 is at the focal plane and VDC2 is 500mm downstream.
- Both VDCs are parallel to the focal plane (45 degrees to central ray).
-
- Active area:
- Transverse: 271mm (total)
-
- Dispersive: 1942mm (total)
This allows for identical chambers each giving full coverage at
500mm downstream position with 50mm on each side for margin as
well as to accomodate different tunes of the spectrometer.
With wires at 45 degrees to the frame this results in
(1942+271)mm / 6mm = 370 wires per plane.
Location:(needs revision!) the high momentum side of VDC2 will extend
[658.7 x sqrt(2) + 50 + 50]/sqrt(2) mm = 729 mm along
the central ray. (The first 50 mm is margin for the
VDC active area and the second 50 mm is a rough
estimate of the frame width. We divide by sqrt(2)
to go from the chamber length to the length along
the central ray.) Therefore the VDCs cover the region
from the FP to 500+729 = 1229 mm downstream (measured
along the central ray).
Number of cells intercepted (from 1st order Transport):
Theta_fp = x0 + theta0 + delta
= -0.404 theta0 + 20.4 delta
= -0.404 (+/- 65) + 20.4 (+/- 5)
= +/- 128 mr = +/- 7.3 degrees
Extreme angle is 45 degrees +/- 7.3 degrees = 37.7 to 52.3 degrees
(angle of rays relative to wire planes).
The wire spacing is 6 mm along the frame edge which translates to
4.24 mm perpendicular distance between wires. The distance from
H.V. plane to H.V. plane is 1 inch = 25.4 mm. The projection of
the track into the wire plane and within the gas volume is
therefore L = 25.4 mm/tan(theta) = 19.6 to 32.9mm long. Since the
wires are oriented at 45 degrees relative to X and Y this track
will intercept L/(sqrt(2)x4.24) = 3.3 to 5.5 cells.
Flasher
Electron Arm Scintillators:
General:
- 2 double-ended planes with segmentation 6,6
- 6+6=12 counters / 24 Photomultiplier tubes (2 inch tubes)
- Bicron BC-408 Plastic
- Polyvinyltoluene (PVT) is the base material
- Light output is 64% that of Anthracene
- Wavelength of maximum emission is 425 nm
- Decay constant of the main fluorescence component is 2.1ns
- Bulk attenuation length is 380 cm
- Index of refraction is 1.58
- Density is 1.032
-
- Softening Point is 70deg C
- Edges of counters will be overlapped for Planes 1 and 2.
Plane 1:
- 6 counters
- PMT: Burle 8575 2" (one tube at each end)
-
- Base and tube assembly 3" diameter and 9 5/8" + 4 1/4" long
- Active area: 36cm(in dispersive) x 176cm(in transverse) x 0.5cm
- Including isochronous guides+lightrod: cm x 29.3cm x 0.5cm
- Including PMTs and housings: 213cm x 29.3cm x 0.5cm
- Total size of plane 1: 213cm x 176cm x 0.5cm
- Orientation: long axes (213cm) normal to the bend plane
- Location: 1380.95 mm from FP
- Beam envelope at above location:
-
- Transverse: +/- 168.1mm
-
- Dispersive: +683.5mm, -856.3mm
-
- Area: 336.2mm x 1539.8mm
Plane 2:
- 6 counters
- PMT: Burle 8575 2" (one tube at each end)
-
- Base and tube assembly 3" diameter and 9 5/8" + 4 1/4" long
- Active area: 54(64?)cm x 37cm x 0.5cm
- Including adiabatic guides+lightrod: 178cm x 37cm x 0.5cm
- Including PMTs and housings: 231cm x 37cm x 0.5cm
- Total size of plane 2: 231cm x 222cm x 0.5cm
- Orientation: long axes (231cm) normal to the bend plane
- Location: 3314.35 mm from FP
- Beam envelope at above location:
-
- Transverse: +/- 286.2mm
-
- Dispersive: +898.9mm, -1125.6mm
-
- Area: 572.4mm x 2024.5mm
Hadron Arm Scintillators:
General:
- 3 double-ended planes with segmentation 6,6,9
- 6+6+9=21 counters / 42 Photo tubes (24 two-inch and 18 five-inch)
- Bicron BC-408 Plastic
- Edges of counters will be overlapped for Planes 1 and 2.
- Plane 3 will not be overlapped due to type of construction.
Plane 1:
- same as for electron arm (including location and sizes)
Plane 2:
- Sizes same as Plane 2 of electron arm
- Location: 3117.75 mm from FP
- Beam envelope at above location:
-
- Transverse: +/- 274.2mm
-
- Dispersive: +877.0mm, -1098.2mm
- Area: 548.4mm x 1975.2mm
- S2 needs to be mounted on SC2
Plane 3:
- 9 counters
- PMT: Burle 8854 5" (one at each end of each segment)
Notes:8854-37 indicates electrical selection of
less than 2500 dark counts per second and peak to
valley ratio greater than 1.2. Tubes culled out of order
of 40 tubes shipped in '92.
Glass is Schott 8337, similar to Corning 9741.
Striations on glass are claimed by Burle to be
some aging affect of the glass prior to assembly
by Burle.
- Active area: 155cm x 40cm x 2.0cm
- Including adiabatic guides+lightrod: 297cm x 40cm x 2.0cm
- Including PMTs and housings: 381cm x 40cm x 2.0cm
- Total size of plane 3: 381cm x 360cm x 2.0cm
- Orientation: long axes (381cm) normal to the bend plane
- Location: 5080.25mm from FP
- Needs Updating - Envelope
- Beam envelope at above location
- Assumes:
- Up to 3470mm (center of FPP analyzer):
- +/- 3.5 deg transverse divergence
- +6.36, -7.93 deg dispersive divergence
- Beyond 3470mm (20deg scattering in anal.):
- +/- 23.5 deg transverse divergence
- +26.36, -27.93 deg dispersive divergence
- Envelope at center of FPP analyzer:
- Transverse: +/- 295.7mm
- Dispersive: +916.3, -1147.3mm
- Envelope at location of scintillator Plane 3:
- Transverse: +/- 752.3mm
- Dispersive: +1436.6, -1704.0mm
- Area: 1505mm x 3141mm
Aerogel Cerenkov:
- Active SiO2 detector dimensions: 195cm x 41cm x 7 (or 9)cm
- Physical enclosure dimensions: 196.2cm x 126.7cm x 36.3cm (includes PMT housings)
- Approximate weight: 175*2 = 250lbs
- PMT: Burle 8854 5" (one at both ends of each of 13 segments)
- 26 PMTs per spectrometer * 2 = 52 PMTs
- Index of refraction: 1.025
- Length of radiator: 7-9 cm of silica aerogel
- Starting location: 1430.7 mm from FP (? mm beyond 1st scintillator)
- Ending location: 1430.7+363mm = 1793.7mm
- Beam envelope at ending location:
- Transverse: +/- 193.3mm
- Dispersive: +729.5mm, -913.8mm
- Area: 386.6mm x 1643.3mm
Gas Cerenkov:
- Thicknesses of materials:
- Entrance window: 1.5mil PVF (Charcoal Tedlar)
- Gas: 1.5m(e- arm)/1m(hadron arm) CO2 1 atm
- Mirrors: ten spherical with 90cm radius of curvature
- 40nm MgF2
- 80nm Al
- 1mm lucite
- 0.2mm carbon-epoxy
- 10mm phenol honeycomb
- 0.2mm carbon-epoxy
- Exit window: 1.5mil PVF (Charcoal Tedlar)
- 10 PMTs per spectrometer * 2 = 20 PMTs:
- Burle 8854 - one per mirror (66ns transit time)
- Location in electron arm:
- Between aerogel and scintillator plane 2
- Starting location: 1803.7mm
- Length: 1501mm
- Ending location: 3304.7mm
- Beam envelope at ending location:
- Transverse: +/- 285.6mm
- Dispersive: +897.9mm, -1124.2mm
- Area: 571.2mm x 2022.1mm
- Location in hadron arm:
- Between 1st and 2nd polarimeter chambers
- Starting location: 1940mm
- Length: 1000mm
- Ending location: 2940mm
- Beam envelope at ending location:
- Transverse: +/- 263.3mm
- Dispersive: +857.2mm, -1073.4mm
- Area: 527mm x 1931mm
- Counter sizes (nominal)
- Both electron and hadron arm counters assumed identical except for length.
- Transverse: +/- 250mm active (1193mm(w/ PMT) total)
- Dispersive: mm active (2547mm total)
- Gas connection required.
- 1 of 1/2 inch for input per arm ( 2 total )
- 1 of 1 inch for output per arm ( 2 total )
Shower Counters:
Starting Location: 3400mm from FP
Plane 1: 48 Pb-glass blocks (10x10x cm^3) with TF-1 glass
- Yerevan TF-1 glass:
- Radiation length: 2.74cm
- Refractive index: 1.647
- Density: 3.86 g/cm^3
- PMTs: Hammamatsu R3036 three inch with mu-metal shields
- Pairs of blocks touching end to end, mounted transverse to central ray.
- Starting location: 3400mm
- Ending location: 3500mm (10cm wide blocks)
- Beam envelope at ending location:
- Transverse: +/- 300.6mm
- Dispersive: +925.2mm, -1158.4mm
- Area: 601mm x 2084mm
- Array of 2x24 long blocks gives area: 700mm x 2400mm
Plane 2: 96 Pb-glass blocks (15x15x35 cm^3) with Schott SF5 glass
- bought from CERN-UA2
- Schott SF5 glass:
- Radiation length: 2.38cm
- Refractive index: 1.6727 (587.6nm wavelength) 1.7107 (404.7nm wavelength)
- Density: 4.08 g/cm^3
- PMTs: Philips XP2050 five inch without mu-metal shields
- Blocks mounted longitudinally (parallel to central ray)
- Starting location: 3550mm
- Ending location: 3900mm (35cm long blocks)
- Beam envelope at ending location:
- Transverse: +/- 322.0mm
- Dispersive: +964.2mm, -1207.2mm
- Area: 644mm x 2171mm
- Array of 6x16 blocks gives area: 900mm x 2400mm
When mounting the box containing Plane 2 it should be lifted at a 30
degree angle to the horizontal. Lifting bolts in box are 4.5"OD
with a 1" diameter ring. 2" diameter shoulder on it. Rating is
13000lbs in a straight lift. At a 45 degree lift it is
13000*.3=3900lbs.
Approximate weight of loaded box is 8300lbs.
Focal Plane Polarimeter:
- 20 degree acceptance
- 5 straw-tube wire planes
- SC1 and SC2 surround the gas Cerenkov counter.
- 5200 channels / 5 chambers / 310 amplifiers / 310 flat cables
- 310*.8=217A @ -6V / 310*.4=124A @ 6V
- @ 50% efficiency => 25 amps + 14 amps = 39 amps, single phase
Detector z Width-x Width-y B E A M E N V E L O P E (mm)
(mm) (mm) (mm) +Disp -Disp Transv
------------------------------------------------------------------
SC1 1870 1780 330 738 - 924 +/- 198
SC2 3010 2080 440 865 -1083 +/- 268
Anal. 3470 2190 520 916 -1147 +/- 296
center of SC3/SC3X at 3865mm?
SC3 3840 2540 720 1099* -1343* +/- 457*
SC3X 3840 2540 720 1099* -1343* +/- 457*
center of SC4 is at 4220mm
SC4 4410 3170 1280 1382* -1645* +/- 705*
* The beam envelope beyond the analyzer assumes 20 degree divergence
in addition to regular divergence of beam envelope. The additional
20 degrees is added at the center of the 12C analyzer (i.e. 3470mm).
Real FPP Detector Sizes
Active Area Outer Dimensions
Width-x Width-y Thick-z Width-x Width-y
(mm) (mm) (mm) (mm) (mm)
------------------------------------------------------------------
SC1 2171.7 635 127 2882.9 1244.6
SC2 2080 440 127 2882.9 1244.6
Anal. 4400 1400 600 4400 1400
center of SC3/SC3X at 3865mm?
SC3 ? ? 120 3300 1500
SC3X ? ? included in SC3
center of SC4 is at 4220mm
SC4 ? ? 120 4000 2100
Detector Planes Straws/plane Total # straws
--------------------------------------------------
SC1 UU'UVV'V 171 23.5*16*3=1128
SC2 UU'UVV'V 171 23.5*16*3=1128
SC3 UU'VV' 221 884
SC3X XX'X 243 729
S4 UU'UVV'V 301 1806
--------------------------------------------------
TOTAL
SC1 - amplifiers on 3 sides - gas tubes on 4th side,2tubes in series
gas in and out on same side - ~200-250kg
SC2 - identical to SC1
Analyzer: 60cm maximum
(slices of 1.9, 3.81, 7.62, 15.24, and 22.86 cm)
with thinner slices at the rear
1.8g/cc => 1663.4*4=6653.6kg ~7.3tons
Approximate weight of aluminum frame and carbon blocks : 6,000lbs
ELECTRON ARM DETECTOR LOCATIONS AND REQUIRED SIZES
Detect. loc Width-x Width-y B E A M E N V E L O P E (in mm)***
(mm) (mm) (mm) +Disp -Disp Transv Area (XxY)
----------------------------------------------------------------------------
VDC1* 0 1942 271 843 - 824 +/- 56.6 1667 x 113
VDC2* 500 1942 271 932 - 911 +/- 85.3 1843 x 171
S1 1300 1760 360 675 - 845 +/- 163 1520 x 326
AERO 1350-1609 1872 414 709 - 888 +/- 182 1597 x 364
GAS 1700-3200 2200 650 886 -1110 +/- 279 1996 x 558
S2 3300 2220 640 897 -1124 +/- 285 2021 x 570
SHOW1 3400-3550 2400 700 925 -1158 +/- 301 2083 x 602
SHOW2 3550-3900** 2400 900 964 -1207 +/- 322 2171 x 644
Note:
DETECTOR SIZES REFER TO REQUIRED ACTIVE AREAS FOR MATCH TO BEAM
ENVELOPE AND NOT TO CURRENT NOMINAL DESIGNS.
Locations refer to the center of the detector (unless otherwise noted)
* VDC dimensions refer to sizes along frames (same for beam envelopes)
** Does not include PMT at rear of shower counter
*** Beam envelopes refer to end location of detector
---------------------------------------------
* HADRON ARM DETECTOR LOCATIONS AND SIZES *
---------------------------------------------
Detect. loc Width-x Width-y B E A M E N V E L O P E (in mm)***
(mm) (mm) (mm) +Disp -Disp Transv Area (XxY)
----------------------------------------------------------------------------
VDC1* 0 1942 271 843 - 824 +/- 56.6 1667 x 113
VDC2* 500 1942 271 932 - 911 +/- 85.3 1843 x 171
S1 1300 1760 360 675 - 845 +/- 163 1520 x 326
AERO 1350-1609 1872 414 709 - 888 +/- 182 1597 x 364
SC1 1870 1780 480 738 - 924 +/- 198 1662 x 396
GAS 1940-2940 2200 650 857 -1073 +/- 263 1930 x 526
SC2 3010 2080 640 865 -1083 +/- 268 1948 x 536
S2 3120 2220 640 877 -1099 +/- 274 1976 x 548
Anal. 3170-3770 2190 680 916 -1147 +/- 296 2063 x 592
SC3** 3840 2540 1000 1099 -1343 +/- 457 2442 x 914
SC3X** 3840 2540 1000 1099 -1343 +/- 457 2442 x 914
SC4** 4410 3170 1500 1382 -1645 +/- 705 3027 x 1410
S3** 4520 3600 1550 1437 -1704 +/- 752 3141 x 1504
Note:
DETECTOR SIZES REFER TO REQUIRED ACTIVE AREAS FOR MATCH TO BEAM
ENVELOPE AND NOT TO CURRENT NOMINAL DESIGNS.
Locations refer to the center of the detector (unless otherwise noted)
* VDC dimensions refer to sizes along frames (same for beam envelopes)
** Assumes 20 degree scattering at the center of FPP analyzer (i.e. 3470mm)
*** Beam envelopes refer to end location of detector
ELECTRON ARM CABLE TYPES SIZES
Digital Delay (16 Ch per double width NIM / 6 modules)
12 of 17 pair Twist and Flat cable
24 34 pin connectors
VDCs (16 Ch per amp card / 23 amp cards per plane / 92 cards)
92 of 17 pair Twist and Flat cable (16 sections of T 'n F for 26'6")
184 34 pin connectors
1 of +5V 1AWG(836/30)
1 of -5.2V 1AWG(836/30)
2 of RETURN 1AWG(836/30)
2 of THRESH 16AWG
2 of THRESH RETURN 16AWG
Flasher
204 fibers
Scintillators (6+6=12 counters / 24 Photomultiplier tubes (2 inch tubes))
24 RG59 (SHV-SHV) 37 feet long
48 SHV connectors
24 RG58C/U (BNC-LEMO) 37 feet long
24 BNC connectors
24 LEMO RG58 connectors
48 50ft IEEE802.3 (BNC-BNC) (65.5ns)
24 RG213 spool (N-N)
48 N series cable to bulkhead connectors
48 BNC-N adapters
48 BNC insulated bulkhead feedthroughs
1 Patch panels (.5 outgoing and .5 incoming)
4 4ft AMP Ribbonax cables (34pin-BNC)
Aerogel Cerenkov (13*2=26 PMTs)
26 RG59 (SHV-SHV) 37 feet long
52 SHV connectors
26 RG58C/U (BNC-LEMO) 37 feet long
26 BNC connectors
26 LEMO RG58 connectors
52 50ft IEEE802.3 (BNC-BNC) (65.5ns)
26 RG213 spool (N-N)
52 N series cable to bulkhead connectors
52 BNC-N adapters
52 BNC insulated bulkhead feedthroughs
1 Patch panels (.5 outgoing and .5 incoming)
4 4ft AMP Ribbonax cables (34pin-BNC)
Gas Cerenkov (10 PMTs)
10 RG59 (SHV-SHV) 37 feet long
20 SHV connectors
10 RG58C/U (BNC-LEMO) 37 feet long
10 BNC connectors
10 LEMO RG58 connectors
20 50ft IEEE802.3 (BNC-BNC) (65.5ns)
10 RG213 (N-N)
20 N series cable to bulkhead connectors
20 BNC-N adapters
20 BNC insulated bulkhead feedthroughs
.5 Patch panels (.25 outgoing and .25 incoming)
2 4ft AMP Ribbonax cables (34pin-BNC)
Shower Counters (48+96=144 PMTs)
144 RG59 (SHV-SHV)
288 SHV connectors
144 RG58C/U (BNC-LEMO)
144 BNC connectors
144 LEMO RG58 connectors
144 RG58C/U (LEMO-BNC)
144 BNC connectors
144 LEMO RG58 connectors
288 50ft IEEE802.3 (BNC-BNC) (65.5ns)
144 RG213 (N-N)
288 N series cable to bulkhead connectors
288 BNC-N adapters
288 BNC insulated bulkhead feedthroughs
2.25 Patch panels (2.25 incoming)
9 4ft AMP Ribbonax cables (34pin-BNC)
7in/7out per NIM module
96/7=14 modules for TA
7in/8+1out 7 signals + summed output
Totals for Electron Arm:
204 optical fibers for flasher
? from Regina
104 17 pair Twist and Flat cable (12+92=104)
208 34 pin connectors
204 RG59 (SHV-SHV) (24+26+10=60 +144=204)
408 SHV connectors
204 RG58C/U (BNC-LEMO)
204 BNC connectors
204 LEMO RG58 connectors
408 50ft IEEE802.3 (BNC-BNC) (65.5ns)
408 Bought pre-fab
204 RG213 (N-N)
408 N series cable to bulkhead connectors
408 BNC-N adapters
408 BNC insulated bulkhead feedthroughs
6 patch panels (2 outgoing and 4 incoming)
19 4ft AMP Ribbonax cables (34pin-BNC)
19 Bought pre-fab
HADRON ARM CABLE TYPES AND SIZES
Digital Delay (16 Ch per double width NIM / 6 modules)
12 of 17 pair Twist and Flat cable
24 34 pin connectors
VDCs (16 Ch per amp card / 23 amp cards per plane / 92 cards)
92 of 17 pair Twist and Flat cable (16 sections of T 'n F for 26'6")
184 34 pin connectors
1 of +5V 1AWG(836/30)
1 of -5.2V 1AWG(836/30)
2 of RETURN 1AWG(836/30)
2 of THRESH 16AWG
2 of THRESH RETURN 16AWG
Flasher
78 fibers
Scintillators (6+6+9=21 counters / 42 Photo tubes(24 two-inch and 18 five-inch))
42 RG59 (SHV-SHV) 37 feet long
84 SHV connectors
42 RG58C/U (BNC-LEMO) 37 feet long
42 BNC connectors
42 LEMO RG58 connectors
84 50ft IEEE802.3 (BNC-BNC) (65.5ns)
42 RG213 (N-N)
168 N series cable to bulkhead connectors
84 BNC-N adapters
84 BNC insulated bulkhead feedthroughs
2 Patch panels (1 outgoing and 1 incoming)
8 4ft AMP Ribbonax cables (34pin-BNC)
Aerogel Cerenkov (26 PMTs)
26 RG59 (SHV-SHV) 37 feet long
52 SHV connectors
26 RG58C/U (BNC-LEMO) 37 feet long
26 BNC connectors
26 LEMO RG58 connectors
52 50ft IEEE802.3 (BNC-BNC) (65.5ns)
26 RG213 spool (N-N)
52 N series cable to bulkhead connectors
52 BNC-N adapters
52 BNC insulated bulkhead feedthroughs
1 Patch panels (0.5 outgoing and 0.5 incoming)
4 4ft AMP Ribbonax cables (34pin-BNC)
Gas Cerenkov (10 PMTs)
10 RG59 (SHV-SHV) 37 feet long
20 SHV connectors
10 RG58C/U (BNC-LEMO) 37 feet long
10 BNC connectors
10 LEMO RG58 connectors
20 50ft IEEE802.3 (BNC-BNC) (65.5ns)
10 RG213 (N-N)
20 N series cable to bulkhead connectors
20 BNC-N adapters
20 BNC insulated bulkhead feedthroughs
.5 Patch panels (0.25 outgoing and 0.25 incoming)
2 4ft AMP Ribbonax cables (34pin-BNC)
Focal Plane Polarimeter (5200 channels multiplexed by 8 = 650 650/16=41)
41 17 pair Twist and Flat cable
82 34 pin connectors
Totals for Hadron Arm:
78 optical fiber for flasher
? from Regina
145 17 pair Twist and Flat cable (12+92+41=145)
290 34 pin connectors
78 RG59 (SHV-SHV) (42+26+10=78) 37 feet long
156 SHV connectors
78 RG58C/U (BNC-LEMO) 37 feet long
78 BNC connectors
78 LEMO RG58 connectors
156 50ft IEEE802.3 (BNC-BNC) (65.5ns) (78*2=156)
156 Bought pre-fab
78 RG213 (N-N)
156 N series cable to bulkhead
156 BNC-N adapters
156 BNC insulated bulkhead feedthroughs
4 Patch panels (2 outgoing and 2 incoming)
14 4ft AMP Ribbonax cables (34pin-BNC)
14 Bought pre-fab
Totals for Both Arms:
204+78=282 optical fiber for flasher
? from Regina
184+41+24 17 pair Twist and Flat cable (182*30'=5460'+) ( Bought 9,400 )
494 34 pin connectors ( Bought 650 )
282 RG59 (SHV-SHV) (42+26+10) ( Bought 6,000 feet )
564 SHV connectors ( Bought 580 )
282 RG58C/U (BNC-LEMO) ( Bought 20,000 feet )
282 BNC connectors ( Bought 1150 )
282 LEMO RG58 connectors ( Bought 450 )
564 50ft IEEE802.3 (BNC-BNC) (65.5ns) ( Bought 600 )
282 RG213 (N-N) (204+78=282)
564 N series cable to bulkhead ( Bought 600 )
564 BNC-N adapters ( Bought 600 )
564 BNC insulated bulkhead feedthroughs ( In stockroom )
10 patch panels (4+6=10)
33 4ft AMP Ribbonax cables (34pin-BNC) ( Bought 50 )