1. Pierluigi Paolucci - I.N.F.N. Naples
HV, LV & DCS status
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
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

2. Pierluigi Paolucci - I.N.F.N. Naples
HV & LV numbers
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
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
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

3. 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
distributor
HV-EASY HV
distributor
HV-EASY
Detector 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
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

4. HV connections schema
I.N.F.N. Naples
11/17/2018

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
11/17/2018
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:
The power supply tender has been assigned to the CAEN;
A complete prototype will be delivered in Sept 04 and will be test in Naples using the RB3 chamber that is working in Naples in the cosmic test station.
The” small” 4-polar cables (from chamber
to patch panel) have been delivered at CERN;
The “big” multi-conductors cables tender
has to be redone as soon as possible;
The tripolar and coaxial connectors have been
delivered to Naples;
A first HV distributor prototype has
been build in Naples. Now is under test;
A first HV patch panel is almost ready;
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

7. HV distributor and patch panel
I.N.F.N. Naples
Patch Panel
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

8. Pierluigi Paolucci - I.N.F.N. Naples
HV & LV cable drawings
I.N.F.N. Naples
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

9. Pierluigi Paolucci - I.N.F.N. Naples
LV: where we are
I.N.F.N. Naples
Low Voltage:
A power supply quotation inquiry was made by CERN for CMS in July 04;
A LV PS prototype will be delivered in Sept 04 and will be tested in Naples;
The power supply will be ordered in Sept 04 and delivered from Dec 04 to Dec 05;
The cables have been delivered at CERN;
The connectors have been delivered at CERN;
The cable production will be done at the ISR when the cable length list will be officially published by the DT-RPC team (CERN-TO-PD-NA)
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

10. HV and LV cost estimation 2003
I.N.F.N. Naples
The total costs of the systems are calculated using a spreadsheet having as inputs the following items:
number of: connectors, cables, patch panels, boards, crates, controllers and mainframes
cable length and installation costs
cost of each of those items
GRI may 03 slide
Estimated cost is 670 K€
CORE is  900 FS or 600 K€
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

11. Pierluigi Paolucci - I.N.F.N. Naples
HV and LV costs 2004
I.N.F.N. Naples
Hardware
Equipment
Cabling
TOT HV
300 (was 250) K€
140 K€
60 K€
500 K€ LV
230 (was 190) K€
14 K€
16 K€
260 K€
2003 est. cost
2004 est. cost
core
Extra cost HV
450 K€
500 K€
50 K€ LV
220 K€
260 K€
150 K€
110 K€
The total cost of the HV & LV systems is 760 K€;
The 2004 increase (80 K€) is due to the hardware cost;
10% of the total cost is due to the cable installation.
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

12. HV and LV estimated costs table
I.N.F.N. Naples

13. HV & LV actual costs table
I.N.F.N. Naples
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

14. RPC DCS overview The RPC Detector Control System schema HV LV temp FEB
I.N.F.N. Naples
The RPC Detector Control System schema
RPC Barrel DCS HV LV
temp
FEB
Gas
Cooling
From other
DCS node
12 crates
80 boards
480 ch.
20 crates
60 boards
720 ch.
300 sensors
10 ADC
About
5000
FEBs
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

15. Pierluigi Paolucci - I.N.F.N. Naples
DCS status overview I
I.N.F.N. Naples
HV channels (80 boards) placed in the 16 crates;
Tender is started in December 03 and is finished on May 04
Easy Prototype in July 04;
Prototype Test in Naples/ISR from Sept 04;
20% of the system in Dec 04;
Board test at CERN from Jan 05;
Full system in Sept 05;
Installation and commissioning 06.
LV channels (60 boards) placed in the 20 crates;
CMS found a common solution;
A3009 board with 12 ch., 2-8, V - 9A, 45 W, 5 boards/crate
Tender at CERN 04;
Full system available in Dec 05;
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

16. Pierluigi Paolucci - I.N.F.N. Naples
DCS status overview II
I.N.F.N. Naples
Temperature probes  readout 10 ADC boards;
100 probes installed (on the chambers); 250 probes ready at the assembling sites;
An ADC/DAC board with 128 ch. is under design for ATLAS & CMS by the CAEN company;
The board will be integrate in the EASY crate;
Prototype and test in the 2004;
Full production in the 2005.
Front-end Front End Boards 800 Link boards in 60 crates
Control/monitor width, threshold and temperature
monitor the RPC/FEB performances (occupancy, rate, noise….)
Racks and crates, gas, cooling and ventilation: will be developed using a common solution/tools for the CMS sub-detectors.
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

17. Pierluigi Paolucci - I.N.F.N. Naples
DCS connection Schema
I.N.F.N. Naples
Control
Room
SY1527
20 Bus lines
12 Bus lines
HV distrib
HV EASY
LV + Temp
LB crate
Detector
LV + Temp
LB crate
300 Optical 1.6 Gbit/s
LV + Temp
LB crate
LV + Temp
LB crate
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

18. Pierluigi Paolucci - I.N.F.N. Naples
DCS cost estimation
I.N.F.N. Naples
Temperature:
T Sensors  300 * 4 €  1.2 K€;
Chamber cable  0.6 Km * 0.5 €/m  0.3 K €;
ADC cable  8 Km * 0.5 €/m  4.0 K €;
ADC cable inst  8 Km * 3 €/m  24 K€;
Cham Connect.  300 * 0.4 €  0.12 K €;
ADC Connect.  600 * 0.4 €  0.24 K €;
ADC boards  10 * 2000 €  20 K€;
FEB – I2C:
I2C cable  6 Km * 5 €/m  30 K€;
I2C connector  780 * 2 * 0.4€  0.7 K€;
I2C cable inst.  6 Km * 3 €/m  18 K€;
~ 50 K €
~ 49 K €
Cost ~ 110 K€ (42 K€ for cabling and 10 KE for infrastructure)
Core = 67 K€  extra cost of 43 K €
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

19. Pierluigi Paolucci - I.N.F.N. Naples
Conclusions……..
I.N.F.N. Naples
The reduced schema (80 boards  one HV channel per chamber) has been chosen for the HV system in order to:
Keep the DT-RPC ground schema (crucial point);
Have independent voltage for every chamber.
The HV tender has been assigned to the CAEN:
HV board: 3500 € (2003)  3500 €;
EASY crate: 1000 € (2003)  950 €;
Branch Ctrl: 1000 € (2003)  850 €;
SY1527: € (2003)  8500 €;
The cost of the HV is 500 K€ extra cost of 50 K€
The LV PS costs are known: No reductions
The cost of the LV is 250 K€ extra cost of 105 K€
The cost of the DCS is 110 K€ extra cost of 67 K€
The cost of the DCS system is reasonable for a detector based on: more than 1000 gas gaps, 1200 HV-LV channels and about 80K electronic channel
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

20. Pierluigi Paolucci - I.N.F.N. Naples
Summary
I.N.F.N. Naples
Cost
Core
Extra-cost HV
500 (60*) K€
450 K€
50 K€ LV
260 (16*) K€
150 K€
110 K€
DCS
110 (42*) K€
67 K€
43 K€
TOT
870 (118*) K€
667 K€
203 K€
* cable installation (5 CHF/mt)
118 K€ out of the total extra cost of 203 K€ is due to the cable installation. This cost was not well known at the time of the RPC project definition.
11/17/2018
Pierluigi Paolucci - I.N.F.N. Naples