1. HV-LV, cabling & services
I.N.F.N. Naples
Introduction
Detector description
HV-LV requirements
HV-LV systems description
Cables and connectors
DCS
Conclusions
F. Loddo2, P. Paolucci1, A. Ranieri2
1) I.N.F.N. of Naples, 2) I.N.F.N. of Bari
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

2. Different solutions are under study by the CMS RPC group
Introduction I
I.N.F.N. Naples
The CMS sub-detectors will be equipped with a large part of the HV and LV systems placed around the detector; in a not “easily accessible” area.
The CMS and ATLAS RPC groups are investigating the possibility to have both the systems around the detector, working in a very hard conditions for the high magnetic field and high radiation environment.
The LHC RPC groups, in collaboration with the CAEN, have designed and tested an HV-LV prototype (SASY 2000) able to work in an hostile area. The system is based on the idea to split in two the HV and LV systems:
LOCAL: Central system (mainframes) placed in control room;
REMOTE: distribution system placed around/on the detector, consisting of a crate housing the HV and LV boards.
A natural evolution of the SASY2000 has been presented to CMS (May 03) by the CAEN company: EASY system.
Different solutions are under study by the CMS RPC group
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

3. Detector description I
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
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

4. Detector description II
I.N.F.N. Naples
RB1/RB2in
RPC chamber
Front-End
Bigap
Distrib. board
Bigap
ALV1
DLV1
ALV2
DLV2
ALV Analog Voltage = 7V Absorb. (6FEBs) = 0.42 A
DLV Digital Voltage = 7V Absorb. (6FEBs) = 0.9 A
I2C input
LV+I2C FEB out
LV in
Distributes analog and digital LV
It supplies LV power to 3 FEB chains
It supplies the I2C main line from LB
and one backup line from DT.
Total power/(ALV+DLV) ch.: 1.32 A * 7 V = 9.24 W
Expected Power  120 W/sector  7.2 kW/Barrel
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

5. Pierluigi Paolucci - I.N.F.N. Naples
Barrel wheel overview
I.N.F.N. Naples 1 2 3 4 5 6 7 8
Muon racks 12 11 10 9
5 CMS wheels
12 sectors
balcony
12 sectors * 5 wheels = 60 sectors
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

6. HV-LV schema for a Barrel sector
I.N.F.N. Naples
78 FEBs = 13 ALV+13 DLV ch bi-gaps = 34 HV ch.
DT chamber
RB4
2+2 LV
6 FEBs / 2 bi-gaps
6 FEBs / 2 bi-gaps
4+4 HV
DT chamber
RB3
2+2 LV
6 FEBs / 2 bi-gaps
6 FEBs / 2 bi-gaps
4+4 HV
6+6+6 FEBs / 3 bi-gaps
6 LV
6 HV
RB2
DT chamber
4 LV
6+6 FEBs / 2 bi-gaps
4 HV
4 LV
6+6 FEBs / 2 bi-gaps
4 HV
RB1
DT chamber
4 LV
6+6 FEBs / 2 bi-gaps
4 HV
2 bi-gaps = 96 strips = 6 FEBs
LVD channel
HV channel
LVA channel
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

7. Pierluigi Paolucci - I.N.F.N. Naples
System requirements I
I.N.F.N. Naples
Barrel & Endcap
General requirements:
working in high magnetic field (up to 2 Tesla);
working in an high radiation environment (5*1010 p/cm2 & 5*1011 n/cm2 & kRad);
local system in control room + distributed remote systems on the detector (at least for the LV);
redundancy of the control electronic devices (mP per board)
input voltage from the CMS AC/DC 48V power supply;
looking forward common CMS solutions in order to simplify the hardware and software development/maintenance of the systems
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

8. Endcap layout (sector in station 2)
RPC group
LHCC session
CERN
Endcap layout (sector in station 2)
I.N.F.N. Naples
Station 1
Station 2
Station 3
Station 4
Total number of chambers: 756
Total number of channels: 89,000
20 degree sector
R2/1
R2/2
R2/3
High eta
Low eta
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

9. System requirements II
I.N.F.N. Naples
Barrel & Endcap
HV requirements:
12KV/1mA
Ripple < 100 mV pp at load per f < 20 MHz
Programmable voltage 0-12KV
Voltage step 10V
Voltage precision < 10V
V/I/Trip/Status control and monitoring
Error/Power leds
LV requirements:
7V/3A
Ripple < 10 mV pp at load per f < 20 MHz
Programmable voltage 0-8V
Voltage step 100 mV
Voltage precision 100 mV
V/I/Trip/Status control and monitoring
Individual ON/OFF
Error/Power leds
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

10. System requirements III
I.N.F.N. Naples
Control and monitoring system requirements:
Common hardware and software (PVSS II) solution;
Detailed control/monitoring of the remote channels:
voltage/current and temperature
protections, errors and hard-reset for communication lost.
A second independent way to control them (telnet/ssh......)
Design requirements:
Possibility to easily increase the HV granularity;
Possibility to easily fix RPC problems:
disconnect high-current/sparking gap/bi-gaps;
modify the HV map in order to group bi-gaps with same working point;
Possibility to measure the RPC working-point in standalone.
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

11. Pierluigi Paolucci - I.N.F.N. Naples
HV-LV system design
I.N.F.N. Naples
Different HV and LV designs will be described in order to reduce the total cost preserving the system requirements, already analyzed and the trigger functionality:
1 HV/bigap 2 LV/6FEBs; FULL OPTION
1 HV/chamber 2 LV/chamber; CHAMBER OPTION
1 HV/station 2 LV/station; STATION OPTION
Then we will analyze two different solutions for both the HV and LV system based on the idea to have them on the detector or in control room.
HV in control room HV on the detector
LV in control room LV on the detector
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

12. HV-LV schema for FULL option
I.N.F.N. Naples
26 LV channels HV channels
Chambers have been designed with 2 gaps, of adjacent bi-gaps, connected to the same HV channel, in order to reduce the number of HV channels preserving the number of station available for the muon trigger
2+2 LV
6 FEBs / 2 bi-gaps
6 FEBs / 2 bi-gaps
2+2 HV
2+2 LV
6 FEBs / 2 bi-gaps
6 FEBs / 2 bi-gaps
2+2 HV
6 LV
6+6+6 FEBs / 3 bi-gaps
3 HV
4 LV
6+6 FEBs / 2 bi-gaps
2 HV
4 LV
6+6 FEBs / 2 bi-gaps
2 HV
4 LV
6+6 FEBs / 2 bi-gaps
2 HV
wheel 1 2 3 4 5
TOT
gaps
408
2040 HV
204
1020
FEBs
936
4680 LV
312
1560
FULL option
1 HV channel per 2-gaps
2 LV channels per 6-FEBs
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

13. HV-LV schema for CHAMBER option
I.N.F.N. Naples
best solution
16 LV channels HV channels
2+2 LV
6 FEBs / 2 bi-gaps
6 FEBs / 2 bi-gaps
1+1 HV
2+2 LV
6 FEBs / 2 bi-gaps
6 FEBs / 2 bi-gaps
1+1 HV
2 LV
6+6+6 FEBs / 3 bi-gaps
1 HV
Reduction of
2 LV
6+6 FEBs / 2 bi-gaps
1 HV
HV 1020  480 ch
LV 1560  960 ch
2 LV
6+6 FEBs / 2 bi-gaps
1 HV
2 LV
6+6 FEBs / 2 bi-gaps
1 HV
wheel 1 2 3 4 5
TOT
gaps
408
2040 HV 96
480
FEBs
936
4680 LV
192
960
CHAMBER option
1 HV channel per chamber
2 LV channels per chamber
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

14. HV-LV schema for STATION option
I.N.F.N. Naples
cheapest solution
12 LV channels HV channels
2 LV
6 FEBs / 2 bi-gaps
6 FEBs / 2 bi-gaps
1 HV
2 LV
6 FEBs / 2 bi-gaps
6 FEBs / 2 bi-gaps
1 HV
2 LV
6+6+6 FEBs / 3 bi-gaps
1 HV
reduction
2 LV
6+6 FEBs / 2 bi-gaps
1 HV
HV 1020  360 ch
LV 1560  720 ch
2 LV
6+6 FEBs / 2 bi-gaps
1 HV
2 LV
6+6 FEBs / 2 bi-gaps
1 HV
wheel 1 2 3 4 5
TOT
gaps
408
2040 HV 72
360
FEBs
936
4680 LV
144
720
STATION option
1 HV channel per station
2 LV channels per station
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

15. More numbers about HV and LV
I.N.F.N. Naples
Looking at different solutions seems to be reasonable to have the following crate/board design:
HV board with 6 ch. (12 KV / 1 mA) 3 slots width;
LV board with 12 ch. (7 V / 3.2 A) 3 slots width;
6U standard Eurocard crate housing up to 5 HV/LV boards.
What do we have in the station/chamber option ?:
1 HV board/sector  60 or 80 HV boards
1 LV board/sector  60 LV boards
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

16. Pierluigi Paolucci - I.N.F.N. Naples
HV-LV Endcap numbers
I.N.F.N. Naples
Layer RE1 RE2 RE3 RE4
# chambers
Assuming 2 HVs channels/chamber to supply independently top gaps and bottom gaps
Layer RE1 RE2 RE3 RE4 TOT Boards Crate
# HV channels
Assuming 1 HVs channels/chamber
Layer RE1 RE2 RE3 RE4 TOT Boards Crate
# HV channels
Number are similar to the barrel. They can increase if are placed around the detector
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

17. Pierluigi Paolucci - I.N.F.N. Naples
SASY 2000 prototype
I.N.F.N. Naples
SASY 2000 prototype
The HV-LV prototype 0 consists of: HV board (SA2001), 3 LV boards (SA2002) and 1 controller.
It has been split in three pieces, following a “logical separation” of the system, in order to study the functionality of every single piece and component.
The following tests has been performed on both the prototypes and will be repeated for the final boards:
Magnetic field test up to 7 KGauss (at CERN) (results shown by CAEN at CERN in May 2002)
Radiation test up to 10 LHC eq-years (at Louvain La Neuve) (results shown)
Test on the RPC to study the noise condition (to be performed at the test station in Bari);
High Stress Test to study the system under very hard conditions (under test in Napoli).
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

18. Pierluigi Paolucci - I.N.F.N. Naples
Ripple measurements
I.N.F.N. Naples
We are studying the noise and ripple of the HV and LV boards using a scope connected to a PC equipped with LabVIEW.
After a month we have not seen any unusual noise/events on both the boards.
The ripple peek to peek at load (f < 1 MHz) of the 2 HV channels is < 20 mV while for the 6 LV channels it is about 200 mv ???
The problem is present also when LV is OFF but mainframe is ON (could be a bad ground connection ?) is under study.
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

19. Radiation & Magnetic Field
CAEN EASY project I
I.N.F.N. Naples
EASY +
DCS
OPC SERVER
CAN Bus based link
Ad-hoc protocol
Speed and reliability
No interoperability issues
Can work in hostile area
It seems to respect the
hardware and software
requirements made
by CMS but we need
a prototype to say YES
Standalone
EASY
3000
4000
Rack Mount
Radiation & Magnetic Field
Full integration in SY1527/SY2527
21 slots per crate
3 kW Maximum Output Power
Magnetic field capability: 2 kGauss
Expected rad.tol.: 5*1010 p/cm2 , 2*1011 n/cm2 ,15 kRad
Per channel:
Independent ON/OFF
Vmon (Connector and Load), Imon
Vset (Software or Hardware)
Programmable Trip, Sense wires
Status Signals
Imax per module (Hardware)

20. boards ready to be produced (on catalog)
CAEN EASY project II
I.N.F.N. Naples
boards ready to be produced (on catalog)

21. Detector and Control Room option
I.N.F.N. Naples
Looking at our requirements seems to be clear that is much better to have the HV system in control room and the LV on the detector but we have analyzed both the solutions in order to have a complete picture of the systems.
What do Detector and Control Room mean ?
Detector: the HV/LV crates are in the racks placed on the balconies (4 per wheel)
Control room: the crate are in the USC zone (100 ?? mt far from the detector).
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

22. detector/control room option LV on the detector & HV in USC
I.N.F.N. Naples
I.N.F.N. Naples
Control Room
3 wires cable
about 6-15 mt long
max 12 watts
Total of 480 short HV cables HV
patch
panel
crate HV
patch
panel LV
crate 3 4 3 4
Multi-wire cable (16 couples)
about mt long
max 72 watts
Total of 60 long HV cables 2 5 1 6 12 7
8-12 wires cable
about 6-15 mt long
max 7 watts
Total of 720 LV cables 11 8 10 9 5 6
Detector
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

23. Similar number also for the Endcap system
Summary
I.N.F.N. Naples
We have designed a “reduced” HV and LV systems for budget limitation, keeping our requirements, consisting of:
HV (control room)
2040 gaps;
Power 4.3 KW
360/480 channels;
60/80 boards;
10/14 crates;
LV (balconies)
4680 FEBs;
Power 7.0 KW
720 channels;
60 boards;
20 crates;
Similar number also for the Endcap system
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

24. Pierluigi Paolucci - I.N.F.N. Naples
HV on the detector
I.N.F.N. Naples
60-80 HV boards placed in 20 crates (1 per balcony)
No easy access, no way to disconnect a bigap, difficult upgrade
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

25. HV in Control Room 60 HV boards placed in 10 crates
I.N.F.N. Naples
Power consumption:
board = 72 W
crate = 430 W
Total 4.3 KW
60 HV boards placed in 10 crates
60 long cables (130 mt), double patch panels
Easy operation on HV (bigap, chamber....)
9/17/2018

26. Pierluigi Paolucci - I.N.F.N. Naples
LV on the detector
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
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

27. HV cable and connectors
I.N.F.N. Naples
The HV cable and connectors have been chosen and approved by CERN
2 high voltage pins to supply –12 kV
1 pin for signal return
insulating material
Polietilene HDPE (Eraclene Polimeri Europa (57%)
Masterbatch (GPO1246 Viba) (43%)
Metal cover connected to external chamber aluminum frame
ZAMA (UNI 3717 G-Zn A14 Cu1)
Suitable to sustain up to 15 kV
Cable characteristics:
According CERN safety instruction IS 23
Single conductor- = 0.16 mm
Conductor 20°C = 147 /Km
Core- = 3 mm
Screen wire-=0.2 mm (for 10 conductors)
Overall diameter = 8.4 mm (for 3 conductors)
Price: €/Km (for 10 Km)
Price: 24 Euro/couple pieces
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

28. HV cable layout (from UXC55 vs USC55)
I.N.F.N. Naples
Barrel & Endcap
Required characteristic
CERN safety instruction IS23:
Flame retardant (IEC Cat. C)
Zero halogene (IEC )
Smoke density (IEC 61034)
Corrosiveness of combustion gases (IEC )
Maximum current per conductor: 500 uA
Maximum voltage per conductor: 15 KV-DC
Signal return
15 KV(DC)
with individual insulating sheath
Braided shield
External sheath
Internal sheath
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

29. HV cable characteristics
I.N.F.N. Naples
Multiconductor cable 8 x (3x0.22) H2M1 Halogene Free 15 kV cc (from patch panels towards tower to patch panel on USC)
External diameter 26.2 mm (nominal)
Weight (indicative) 826 g/m
Cable 1 x (3x0.22) H2M1 Halogene Free 15 kV cc (from detector towards patch panels on towers)
External diameter 7.7 mm (nominal)
Weight (indicative) 82 g/m
Manufacturer: NOVACAVI
We are also looking at the solution with 8 coaxial cables (15 KV)
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

30. LV cable characteristics
I.N.F.N. Naples
Cable 12 x 0.75 (RB2/3 case):
Braided shield: copper
External diameter (nominal): 10.1 mm
Weight (indicative): 175 g/m
Cable 8 x 0.75 (RB2/2 case):
External diameter (nominal): 9.0 mm
Weight (indicative): 156 g/m
Manufacturer: NOVACAVI
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

31. LV connector and cable
I.N.F.N. Naples
The LV cable and connectors are under discussion
LV cable: 8 wires  outer diam. = 7.5 mm Price 1,00 Euro/m
12 wires  outer diam. = 8.5 mm Price 1,50 Euro/m
LV cable connector:
female 12 pins Molex Microfit-Fit 3,0 ( ) Price 3,49 Euro/5
female pins 20 AWG Molex Microfit-Fit 3,0 ( ) Price 10,37 Euro/100
LV RPC connector:
male 12 pins Molex Microfit-Fit 3,0 ( ) Price
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

32. LV and HV CAD cable design
I.N.F.N. Naples
Max LV/HV local cable lenght = 15 mt
Min LV/HV local cable lenght = 6 mt
Average lenght = 12 mt
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

33. Pierluigi Paolucci - I.N.F.N. Naples
RPC cable design
I.N.F.N. Naples
Drawn by L. Roscilli
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

34. Pierluigi Paolucci - I.N.F.N. Naples
RPC cable design
I.N.F.N. Naples
Drawn by L. Roscilli
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

35. Pierluigi Paolucci - I.N.F.N. Naples
Signal cable
I.N.F.N. Naples
20 twisted pairs cable
Very low skew cable (1-2 ns between pairs for 25 m max length)
Conductor cross section: 28 AWG
Insulator: PE
Global shield: tinned copper braid
External shield: PE
Total external diameter: mm
Rated voltage: 10 V (used for LVDS signal transmission)
Operating temperature: 0°/+60°C
Characteristic impedance: 110  (10%)
CERN safety instruction IS23 compliant:
Flame retardant (IEC Cat. C)
Zero halogene (IEC )
Smoke density (IEC 61034)
Corrosiveness of combustion gases (IEC )
Competitor manufacturers: Kabelwerk EUPEN - NOVACAVI
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

36. Temperature monitoring
I.N.F.N. Naples
Most of the chambers will be equipped with at least one sensor temperature in order to monitor the temperature of the chamber/iron-gap.
The measurement will be used to correct the RPC working point (P and T).
T Sensor: Analog Device transducer AD592 family:
calibration error about 0.7 oC (typical) and 1.0 oC (max)
excellent linearity: 0.15 oC
range from –20 oC to 105 oC
single supply operation +4 – 30 Volts
1mA/K output current.
They will be readout by an ADC board (24/36 ch.) placed in the HV-LV crate
The DCS software will have on protocol for both the HV-LV system than the temperature.
The T cable (4 wires/station) routing is the same of the LV cable.
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

37. Barrel sector cables (except 4-9-10-11)
I.N.F.N. Naples
To balconies
Wheel 0, ±1 (Wheel ±2 )
To LBBOX
6 LV
8 HV
6 DCS
78 SGN
17p 12
18w
RB4
RB4
17p
18w 12
RB3
RB3
17p (110p)
18w (112w)
12 (18)
RB2_OUT
110p (17p)
18 (12)
112w (18w)
RB2_IN
17p
18w 12
RB1_OUT
17p
18w 12
RB1_IN
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

38. Pierluigi Paolucci - I.N.F.N. Naples
Barrel cables sector 4
I.N.F.N. Naples
To balconies
Wheel 0, ±1 (Wheel ±2 )
To LBBOX
7 LV
10 or 8 HV
7 DCS
90 SGN 12
17p
17p 12
18w
RB4
RB4
RB4
RB4
18w
17p 12
RB3
RB3
18w
17p (110p)
18w (112w)
12(18)
RB2_OUT
110p (17p)
112w (18w)
18(12)
RB2_IN
17p
18w 12
RB1_OUT
17p
18w 12
RB1_IN
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

39. Pierluigi Paolucci - I.N.F.N. Naples
Barrel cables sector 10
I.N.F.N. Naples
To balconies
Wheel 0, ±1 (Wheel ±2 )
To LBBOX
7 LV
8 HV
7 DCS
86 SGN 10
17p
17p 10
18w
RB4
RB4
18w
17p 12
RB3
RB3
18w
17p (110p)
18w (112w)
12(18)
RB2_OUT
110p (17p)
112w (18w)
18(12)
RB2_IN
17p
18w 12
RB1_OUT
17p
18w 12
RB1_IN
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

40. Pierluigi Paolucci - I.N.F.N. Naples
Barrel cables sector 9-11
I.N.F.N. Naples
To balconies
Wheel 0, ±1 (Wheel ±2 )
To LBBOX
6 LV
7 HV
6 DCS
72 SGN
17p 6
18w
RB4
17p
18w 12
RB3
RB3
17p (110p)
18w (112w)
12(18)
RB2_OUT
110p (17p)
112w (18w)
18(12)
RB2_IN
17p
18w 12
RB1_OUT
17p
18w 12
RB1_IN
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

41. Pierluigi Paolucci - I.N.F.N. Naples
Number and lenght I
I.N.F.N. Naples
Updated by F. Montecassiano
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

42. Pierluigi Paolucci - I.N.F.N. Naples
Number and lenght II
I.N.F.N. Naples
Updated by F. Montecassiano
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

43. Number and lenght wheel 0
I.N.F.N. Naples
updated by L. Roscilli
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

44. Number and lenght wheel 0
I.N.F.N. Naples
updated by L. Roscilli
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

45. Pierluigi Paolucci - I.N.F.N. Naples
Rack composition USC
I.N.F.N. Naples
HV Patch Panel
SY1527:
9 or 11 A1676 Branch Controllers
EASY crates
HV modules (A3512): 5 boards/crate +
barrel
Full Option:
1020 HV channels
Chamber Option:
480 HV channels
Station Option:
360 HV channels
170 HV board
34 EASY crates
+ 1 SY1527 +
20 HV patch panel
80 HV boards
16 EASY crates
60 HV boards
12 EASY crates
endcap
63 HV boards + 13 EASY crates + 1 or 2 SY HV patch panel
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

46. Pierluigi Paolucci - I.N.F.N. Naples
Rack composition USC
I.N.F.N. Naples
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

47. Rack composition in UXC tower
I.N.F.N. Naples
News: Add 2 middle crates to house the LB box and the balconis
Calculation per quadrant (Barrel)
1 EASY crates:  Watts ?
3 LV modules (A3003)/quadrant +
ADC board + LV LB board
4 LB boxes  Watts ?
1 HV 6U patch panel (3 sectors)
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

48. Barrel & Endcap DCS system description
I.N.F.N. Naples
HV: 360 channels (60 boards) placed in the 10 EASY crates;
LV: 720 channels (60 boards) placed in the 20 EASY crates;
Temperature: every chamber will have a probe temperature corresponding to 96 probes per wheel for a total of 480 probes. They will be acquired using and ADC board with 32/64 channels to be placed in the LV crates on the balconies;
Racks and crates: will be provided by a common solution;
Gas cooling and ventilation: will be developed by CERN groups;
Front-end: this part (4680 channels) will be controlled via the link-board and consists of:
control and monitor the FEB width and threshold;
monitor the FEB temperature;
monitor the RPC/FEB performances (occupancy, rate, noise….).
Barrel & Endcap
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

49. Pierluigi Paolucci - I.N.F.N. Naples
CMS-RPC DCS
I.N.F.N. Naples
COMPONENTS
AREA
HW. AVAIL
HW INTEGR
SW INTEGR
MANPOWER
Front-end
DCS
1Q03 proto ?
Helsinky
Warsaw
Bari - Napoli
HighVoltage
JCOP/DCS
4Q02 proto
3Q05
3Q04
Bari (A.Ranieri)
Napoli (P.Paolucci)
LowVoltage
Cooling
JCOP/JCOV
GWG
P.Paolucci
Gas
GWG/JCOP
JCOP - ~2004
Racks
JCOP/CMS
n/a
1Q05
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

50. Pierluigi Paolucci - I.N.F.N. Naples
RPC DCS milestones
I.N.F.N. Naples
COMPONENT
AREA
HW. AVAIL NOW
HW INT. MILESTONE
HW FINAL MILESTONE SW
INTEGR
MANPOWER
Front-end
XDAQ/DCS
1Q03
prototype ?
Helsinki-Warsaw
High Voltage
&
Low Voltage
JCOP/DCS
4Q02
prototype #0
1Q04
prototype #1
3Q05
3Q04
Bari-Napoli-Endcap
rad. test OK
mag. teat OK
stress test now in Naples
eng. board
controller
crates with
cooling
15 months production for barrel only.
Cooling
JCOP/JCOV
P.Paolucci
Racks
JCOP/CMS
n/a
2Q05
1Q05
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples

51. Pierluigi Paolucci - I.N.F.N. Naples
Conclusion
I.N.F.N. Naples
We want to begin the “procedure” to order the HV-LV hardware in the 2003
we are still waiting for a final LV cost…for CMS.
If we can save money from the LV budged (as we hope) we will use them to upgrade the HV system to the chamber solution that is our goal.
The topology of the HV-LV system is now well defined and so we are ready for asking a cable PRR
we are just collecting all necessary documentations
Before the end of this year we start tenders
this implies to know exactly total lengths
cable path (to be approved very soon)
9/17/2018
Pierluigi Paolucci - I.N.F.N. Naples