1. Pierluigi Paolucci - I.N.F.N. Naples
HV, LV
I.N.F.N. Naples
Barrel and Endcap projects
High Voltage
Low Voltage
Detector Control System
Cabling and routing
Rack and Crate
Schedule, status and cost
F. Loddo2, P. Paolucci1, P. Passeggio1, A. Ranieri2 ,L. Roscilli1
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

2. Pierluigi Paolucci - I.N.F.N. Naples
Barrel description
I.N.F.N. Naples
There are 3 different kind of chambers with 2 or 3 bigaps and equipped with
6 or 12 or 18 Front-End Boards
RB2/3
Bigap
ALV1
DLV1
ALV2
DLV2
HV1
HV2
RB3 and RB4
ALV1
DLV1
ALV2
DLV2
HV1
HV2
Bigap
RB1 and RB2/2
Bigap
ALV1
DLV1
ALV2
DLV2
HV1
HV2
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

3. Pierluigi Paolucci - I.N.F.N. Naples
HV & LV schema
I.N.F.N. Naples
Reduction of
HV 1020  480 ch
LV 1560  960 ch
1 HV ch. per chamber
2 LV ch. per chamber
SECTOR schema
6 FEBs / 2 bi-gaps
6+6+6 FEBs / 3 bi-gaps
1+1 HV
1 HV
2 LV
6+6 FEBs / 2 bi-gaps
12 LV channels HV channels
per wheel
TOT
gaps
408
2040 HV 96
480
FEBs
936
4680 LV
144
720
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

4. Pierluigi Paolucci - I.N.F.N. Naples
HV & LV schema
I.N.F.N. Naples
Control Room
LV ch.
720
LV baords 60
EASY 20
HV ch.
480
HV boards 80 12
SY1527
HV-EASY
HV-EASY
Detector HV
distributor
1 in – 2 out HV
distributor
1 in – 2 out 3 4
RPC LV
RPC LV 2 5 1 6 12 7 11 8
RPC LV
RPC LV 10 9
HV 4-polar cable
LV cable
HV 10x4-polar cable
panel HV
panel HV
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

5. Pierluigi Paolucci - I.N.F.N. Naples
LV connections schema
I.N.F.N. Naples
60 LV boards placed in
20 crates (1 per balcony)
Power consumption:
board (12 ch.)  116 W
crate (3 boards.)  350 W
wheel (4 crates)  1.4 KW
Total  7.0 KW
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

6. Pierluigi Paolucci - I.N.F.N. Naples
HV: where we are
I.N.F.N. Naples
High Voltage (SY1527-EASY-A3012):
The power supply tender has been assigned to the CAEN in the 2004;
A complete prototype has been delivered in Dec 04 and has been tested in Naples using the RB3 chamber.
Delivery will begin in Sept 05…to Dec 05.
All HV cables will be assembled at the CPE when the cut lengths will be ready
The “big” multi-conductors cables tender has been assigned to the Kerpen and it will be delivered in July 2005 at CERN;
The barrel HV distributors are in production;
The HV patch panels in the 2005;
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

7. Pierluigi Paolucci - I.N.F.N. Naples
LV: where we are
I.N.F.N. Naples
Low Voltage (SY1527-EASY-A3009) :
The power supply tender has been assigned to the CAEN in the 2004;
A complete prototype has been delivered in Dec 04 and has been tested in Naples and then modified by the CAEN to reduce the noise (see next).
Delivery will begin in Sept 05…to Dec 05.
All HV cables will be assembled at the CPE when the cut lengths will be ready.
Cable, connector and pins have been received.
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

8. Pierluigi Paolucci - I.N.F.N. Naples
LV Test
Napoli feb 05
Noise ripple 01/05:
+/ ~ 10 mV (150 KHz)
+/GND ~ 1 V (150 KHz)
-/GND ~ 1 V (150 KHz)
EASY
CRATE
- +
mP GND
crate GND
shield
LV cable
Solutions proposed:
+/GND  C ~ 10 mF
mP GND / crate GND  C ~ 100 mF
better crate GND
sense reference connections
new connector
Same for the HV board
10 mt
Result 04/05:
+/ ~ 10 mV (150 KHz)
+-/GND ~ 30 mV (150 KHz)
Ana1+
Ana1 –
Dig1 +
Dig1 –
Ana2+
Ana2 –
Dig2 +
Dig2 -
RPC RB3
distrib.
shield
safety
GND
Ref. GND
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

9. Pierluigi Paolucci - I.N.F.N. Naples
Rack LV
From LV power supply with floating output
ALV1
AGND1
ALV
DLV1
DGND1
shielded cable
AGND
ALV2
AGND2
DLV
DLV2
DGND
DGND2
shield LV
distrib. board
4 pairs
IRON – MAGNET
safety ground
AGND
FEB 1
chip
chip
AGND
FEB
copper
strip
chip
kapton
Double Gap 2
AGND
DGND
Double Gap 1
Chamber metallic structure
AGND
chip
chip
FEB 6
HVReturn
Grounding
Schema
Copper 2
Copper 1
chamber GND
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

10. Barrel/Endcap HV and LV numbers
I.N.F.N. Naples HV
COST
Channel
SY1527
A3512
EASY
distrib
Barrel
480 1 80 12 30
500 K€
Endcap
432 72
472 K€
3500 Euro LV
COST
Channel
SY1527
A3009
EASY
distrib
Barrel
720 1 60 20
260 K€
Endcap
864 72
16-20
280 K€
3200 Euro
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

11. Barrel/Endcap HV and LV costs
I.N.F.N. Naples
Barrel
Hardware
Equipment
Cabling
TOT HV
300 K€
140 K€
60 K€
500 K€ LV
230 K€
14 K€
16 K€
260 K€
Endcap
Hardware
Equipment
Cabling
TOT HV
272 K€
140 K€
60 K€ ?
472 K€ LV
250 K€
14 K€
16 K€ ?
280 K€
The total cost of the HV & LV systems is 760 – 752 K€;
The HV-LV barrel cost increase (80 K€) is due to the hardware cost;
10% of the total cost is due to the cable installation.
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

12. Pierluigi Paolucci - I.N.F.N. Naples
HV & LV cable drawings
I.N.F.N. Naples
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

13. Pierluigi Paolucci - I.N.F.N. Naples
USC55 barrel HV system 8U
EASY
fan tary
heat exchange
HV distributor 2U
50 U
36 input ch.
48 output ch.
Total:
144 output ch.
144 input ch.
"full" crate schema
General Information
HV EASY board: 7 ch.
Full EASY crate: 42 ch.
EASY (6 out 7): 36 ch.
HV distributor:
32 input ch.
16 output ch.
Rack height tot: 56 U
turbine 4 U
air defl. 2 U
Rack available height 50 U
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

14. USC55 HV barrel racks composition
EASY
fan tary
heat exchange
HV distributor 2U
56U/
56 U
36 input ch.
48 output ch.
S1H02
turbine
air deflector 4U 8U
EASY
fan tary
heat exchange
HV distributor 2U
36 input ch.
48 output ch.
S1H03
turbine
air deflector 4U 8U
EASY
fan tary
heat exchange
HV distributor 2U
36 input ch.
48 output ch.
S1H04
turbine
air deflector 4U
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

15. USC55 HV barrel racks composition
S1H05 4U
turbine
Some numbers about this configuration:
3 “full” racks with:
4 EASY crates with 6 HV boards;
24 HV boards A3512;
9 HV distributors;
tot of 144 HV channels;
total height 56U (full).
1 “half” rack with:
2 SY1527 mainframes;
2 EASY crates with 4 boards;
3 HV distributors;
tot of 48 HV channels.
SY1527 HV 8U
SY1527 LV 8U
EASY
fan tary
heat exchange 8U
24 input ch.
HV distributor 2U
48 output ch.
42U/
56 U
EASY
fan tary
heat exchange 8U
24 input ch.
TOTAL numbers
14 EASY crates;
80 HV boards A3512;
480 HV channel;
30 HV distributors;
2 SY1527 mainframes. 2U
air deflector
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

16. Pierluigi Paolucci - I.N.F.N. Naples
RPC Rack Map
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

17. Pierluigi Paolucci - I.N.F.N. Naples
Rack composition
4 EASY crate per rack (S1H );
9 HV distributors;
6 HV board A3012 per EASY crate;
Rack S1H06 with 2 Mainframes + 2 A3486
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples

18. Pierluigi Paolucci - I.N.F.N. Naples
Production
I.N.F.N. Naples
The EASY HV system will be delivered in Naples from September 2005 to January 2006:
80 A EASY crates + 1 SY1527
They will be tested in Napoli;
The EASY LV system will be delivered at CERN from September 2005 to January 2006:
60 A EASY crates + 1 SY1527
They will be test at CERN using the common facilites
2 EASY crate (LV + HV) will be used for the magnet test and for the cosmic challenge and they will be delivered in Napoli at the end of Sept 2005.
HV and LV cable and connector are already at the CPE company where they will be assembled when the cut-length will be known (starting from the 2 cosmic challenge sectors)
No news about the AC-DC converter for the LV system
11/12/2018
Pierluigi Paolucci - I.N.F.N. Naples