ECal trig B Quinn July 14 2017 1 GEp trigger or possible HCal trigger HCal is 12X24 array of modules Form overlapping regions by taking all possible 2X2 sets of 4X4 module ID: 815723
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Slide1
HCal Electronics with First-level ECal trig
B. QuinnJuly 14, 2017
1
Slide2GEp trigger (or possible HCal trigger)HCal
is 12X24 array of modules.Form overlapping regions by taking
all possible 2X2 sets of (4X4 module)
groups
. Each group is a member of fourregions (or less).Total of 10 regions to be summed to givetotal energy in region. Each sum can be compared to threshold. Ten logic signals to send to ECal to look forenergy in region of HCal expected to correspond to ECal hit.
2
Slide33
1
2
1
2
2
2
2
2
2
2
4
4
4
4
2
1
1
2
For
GEp
trigger
18 (4X4 module) groups require:
18 (16+
chan
) summing modules
Have
17
UVa
120s (more available?)
(Could turn some modules into 2X18
chan
sums with fairly simple mod.)
17 modified and tested (2 repaired)
14 linear
fan-out channels (4 modules)
10 fan-in
chanels
(3 modules)
Have
2
UVa
quad 133s (more
available?)
(Built-in disc. BUT 100 ns delay !!
and ECL out)
Slide44Sum X -0.393Sum X -0.697 X 2
integral/4.7 nsdecay time=230 ns
X -1
6.5 ohm
Slide5Cabling scheme for HCalOne signal, one HV cable to each tube. (Plus one HV & 3 signal/section for pulser)Cables secured, strain-relieved on gantry behind HCal
.Cables held in place by gantry so they can be quickly re-connected to correct tubes.On
HCal
electronics/cabling platform
X10 amp Outputs to electronics hut (BNC RG58 100 m. long) Lemo cable outputs to UVa summing moduleSecond patch panel in electronics hut Asymmetric passive splitter (board with connection/housing/power for Nino) Signal cables run to one of eighteen 16-input BNC sub-panels (S01-S18)
Sequential inputs go to sequential channels of Nino, fADC
Nino outputs go to VETROC-based TDC or F1 TDC
Slide6PMT
fADC
Nino
Disc.
VETROC(or TDC)
Sum of 4
Disc
Shielded DAQ hut
Sum of 16
(18 groups)
(10 regions)
18
UVa
Summing mod.
36 in -> 18 in (16
in used
)
4 quad linear FO (e.g. Phillips 740 2.5V)
3 quad 4-fold linear FI (
UVa
133)
12
chan
L.E. Disc.(3X4 or 1X16)
Passive
asymmetric
splitter
LVDS
To
Ecal
trigger
Lemo
fan
out
100 m ??
or nearby hut
X10 amp
patch panel
Slide7P
lan
for LED pulsing.
Don’t worry about firing adjacent
PMTs simultaneously but avoid having
adjacent electronics channels for same
LED pulse.
Slide8Simple cabling pattern.Adjacent electronics channels don’t fireon same LED pulse and unlikely to fire in same cluster.Electronics module problems show up as many bad HCal signals in two rows,
easy to spot.
Somewhat easier to track down single-
module problems.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Slide91-12Cabling pattern.Three 16-channel slotsfor each four rows.Only one patch panel straddles each
of two sub-module divisions (S05 and S14)
12
8 4 16
1
2
3
4
5
6
7
8
9
10
11
13
14
15
16
1
2
3
4
5
6
7
9
10
11
12
b3
14
15
16
1
2
3
5
6
7
8
9
10
11
12
13
14
15
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1-1
24-1
24-12
{
S16
S17
S18
S01
S02
S03
S04
S05
S06
{
{
{
{
{
S07
S08
S09
S10
S11
S12
S13
S14
S15
Slide1010Map from electronicschannels to HCal module-Amplifiers-Patch panels-Ninos
-TDCs (or VETROCs)-fADCs
S01 S02 S03 S04 S05 S06 S07 S08 S09
1 1- 1 2- 2 3- 3 5- 1 6- 2 7- 3 9- 1 10- 2 11- 3
2 1- 4 2- 5 3- 6 5- 4 6- 5 7- 6 9- 4 10- 5 11- 6 3 1- 7 2- 8 3- 9 5- 7 6- 8 7- 9 9- 7 10- 8 11- 9 4 1-10 2-11 3-12 5-10 6-11 7-12 9-10 10-11 11-12 5 1- 2 2- 3 4- 1 5- 2 6- 3 8- 1 9- 2 10- 3 12- 1 6 1- 5 2- 6 4- 4 5- 5 6- 6 8- 4 9- 5 10- 6 12- 4 7 1- 8 2- 9 4- 7 5- 8 6- 9 8- 7 9- 8 10- 9 12- 7 8 1-11 2-12 4-10 5-11 6-12 8-10 9-11 10-12 12-10 9 1- 3 3- 1 4- 2 5- 3 7- 1 8- 2 9- 3 11- 1 12- 210 1- 6 3- 4 4- 5 5- 6 7- 4 8- 5 9- 6 11- 4 12- 511 1- 9 3- 7 4- 8 5- 9 7- 7 8- 8 9- 9 11- 7 12- 812 1-12 3-10 4-11 5-12 7-10 8-11 9-12 11-10 12-1113 2- 1 3- 2 4- 3 6- 1 7- 2 8- 3 10- 1 11- 2 12- 314 2- 4 3- 5 4- 6 6- 4 7- 5 8- 6 10- 4 11- 5 12- 615 2- 7 3- 8 4- 9 6- 7 7- 8 8- 9 10- 7 11- 8 12- 9
16 2-10 3-11 4-12 6-10 7-11 8-12 10-10 11-11 12-12 S10 S11 S12 S13 S14 S15 S16 S17 S18
1 13- 1 14- 2 15- 3 17- 1 18- 2 19- 3 21- 1 22- 2 23- 3 2 13- 4 14- 5 15- 6 17- 4 18- 5 19- 6 21- 4 22- 5 23- 6
3 13- 7 14- 8 15- 9 17- 7 18- 8 19- 9 21- 7 22- 8 23- 9 4 13-10 14-11 15-12 17-10 18-11 19-12 21-10 22-11 23-12 5 13- 2 14- 3 16- 1 17- 2 18- 3 20- 1 21- 2 22- 3 24- 1
6 13- 5 14- 6 16- 4 17- 5 18- 6 20- 4 21- 5 22- 6 24- 4 7 13- 8 14- 9 16- 7 17- 8 18- 9 20- 7 21- 8 22- 9 24- 7 8 13-11 14-12 16-10 17-11 18-12 20-10 21-11 22-12 24-10
9 13- 3 15- 1 16- 2 17- 3 19- 1 20- 2 21- 3 23- 1 24- 210 13- 6 15- 4 16- 5 17- 6 19- 4 20- 5 21- 6 23- 4 24- 5
11 13- 9 15- 7 16- 8 17- 9 19- 7 20- 8 21- 9 23- 7 24- 812 13-12 15-10 16-11 17-12 19-10 20-11 21-12 23-10 24-1113 14- 1 15- 2 16- 3 18- 1 19- 2 20- 3 22- 1 23- 2 24- 3
14 14- 4 15- 5 16- 6 18- 4 19- 5 20- 6 22- 4 23- 5 24- 615 14- 7 15- 8 16- 9 18- 7 19- 8 20- 9 22- 7 23- 8 24- 916 14-10 15-11 16-12 18-10 19-11 20-12 22-10 23-11 24-12
Slide11144 BNC/
lemo
cables from
top half of
HCal(~5m long)
11
9 16-chan
PMT amps
9 16-chan
PMT amps
144 BNC/
lemo
cables from
bottom half of
HCal
(~5m long)
9X16-chan
BNC/BNC
patch panel
(To electronics
hut)
9X16-chan
BNC/BNC
patch panel
(To electronics
hut)
144
lemo
cables
144
lemo
cables
G
r
1
G
r
9
}
}
}
S01
S02
S03
S04
S05
S06
S07
S08
S09
144
lemo
cables
144
lemo
cables
G
r
10
G
r
18
9
lemo
cables
9
lemo
cables
9 16-chan
summing
UVa
120
9 16-chan
summing
UVa
120
4 lin.
Fan-
out
3X4-
chan
sum
UVa
-
133
Electronics racks on
HCal
gantry (2 relay racks)
(
HV patches and cables not shown)
10
ch
LE-
disc
S01
S01
S09
S09
S10
S16
S16
S10
Slide1212
9X16-chanpatch panel/
Nino interface
(BNC from
gantry)S01S099X16-chanpatch panel/Nino interface
(BNC from gantry)
S10
S16
VETROC
or
F1 TDC
S01
S09
S16
S10
VETROC
or
F1 TDC
F250
fADCs
S01
S09
S16
S10
Electronics racks
in shielded hut
(2 relay racks)
LVDS
(converted
to ECL
for F1?)
Lemo
F250
fADCs
Slide1313Considering possible routes for cables (assuming no local hut)
Slide1414Time (ns) (from impact with front face) ~ 0.2 V signal amplitude
=> ~3.0 nVs => 60 pC
into X10 amp
after amplifier (3V max)
~2 V amplitude 30 nVs
Slide1515Choose PMT gain so expected signal sums to ~60 nVs after amp giving ~1V output. Discriminate at eg. ~0.25 V.
Summer output vs. pulse integral
Slide1616~240 mV
~4400
p.e
Expect 6200-7200
p,ePMT @ 1325 VLow Q.E. ?? Need more testing
Slide1717
{
Zeners
on last 3 stages
total 500 V{@ 1325 Vonly 185 V K-D1probably need a Zener(“Easy” fix on 200 CMU XP 2262 bases…~100
JLab
XP 2282 bases are SMDbut lower-gain 8 stage?
)
Slide1818~2.1 V
After X10 PMT amp
~3000
p.e
!!! wrong!
Slide1919After X10 PMT ampand 100 m RG58 cable~720 mV
Slide2020For all experiments:288 ~5m BNC/lemo cables24 12-chan amps &2 NIM bins288 lemo
/BNC jumper cables288 chan BNC-BNC patch panel
288
long BNC
RG 58 cables (from ECal)3 long cables +1 SHV for pulserAsymmetric splitter panel in Electronics hut with connection/housing for Nino cards18 Nino cards (with pin connectors)18 sixteen channel LVDS cables18 VETROCs (or F1 TDCs)288 lemo cables18 fADCs4
VXI crates 4
ROCs & TIs
288 chan HV (2 1458 crates 24 1461N)
12 24-conductor HV cables24 24-chan. SHV boxes288 1.5 m SHV
288 5 m SHV
For GEp:
288+ lemo cables
18 UVa 120 Summing modules (modified)
4 quad linear FI/FO (e.g. Phillips 740 2.5V)3 UVa 133 quad 4-chan summing modules
12 channels L.E. Disc.3 NIM bins
}
Acquisition
in
done?
Slide2121Remaining tests:(This summer)Double-check QE at low HVCompare with Zener on K-D1
Test XP 2282 at low gain for QE dropTest timing with Nino boards with/without 100 m cables
Require voltage-divider boards to give mV signals
with isolation capacitors! Also test with cosmics (less smooth signal)Make final decision on use of Nino boardsDecide whether 100 m cables OK …if so, decide cable route (and rack positions in hut)
Slide2222