1. RPC Configuration
DataBase
Pierluigi Paolucci - I.N.F.N. of Naples

2. Pigi Paolucci, I.N.F.N. of Naples
RPC Barrel
I.N.F.N. Naples
HV system  ~ 480 channels
config. param. = 8
cond. param. = 11
LV system  ~ 750 channels
Temperature  ~ 300 channels
Front End  ~ 4680 Front-End Boards
config. param. = Threshold & Width
cond. param. = Rate/Occupancy histograms
21/09/2018
Pigi Paolucci, I.N.F.N. of Naples

3. 9.360 Threshold + 9.360 width + 4.680 temp.
Front-End Board Data
I.N.F.N. Naples
Barrel FEB is equipped with 2 front-end chips (8 strips each) and 1 temperature sensor. For each chip there are:
2 threshold value (hardware defaults of 200 mV);
2 width values (hardware defaults of 100 ns);
1 temperature value.
How many operations/bytes do we need to read/write this parameters ??
Read width/thresh.  2 write + 1 read  5 bytes
Read temperature  2 write + 1 read  5 bytes
Write width/thresh.  3 write  6 bytes
TOTAL number of FEB parameters are
9.360 Threshold width temp.
21/09/2018
Pigi Paolucci, I.N.F.N. of Naples

4. RPC Barrel configuration Data
I.N.F.N. Naples
Barrel RPC detector is equipped with 480 HV channels and with 780 LV channels.
To configure the detector we need to set:
Vset, Vmax, Iset, Imax, Trip, Rup, Rdown, On/Off.
HV & LV configuration requires about
1260 ch * 8 par. = par * 2 bytes = 20 KB
FEB configuration requires about
3.4 Kbytes per Link Board
corresponding to 2 MB.
21/09/2018
Pigi Paolucci, I.N.F.N. of Naples

5. RPC configuration states
I.N.F.N. Naples
The RPC detector will have “at least” 3 different configuration states (data, calibration, “injection/safe”);
Plateau calibration needs from 5 to 7 runs with different configuration parameters (HV set-points) when the others muon systems are working/triggering in “normal mode”.
Noise calibration runs (?) needs few runs with different FEB thresholds but fixed HV set-points.
21/09/2018
Pigi Paolucci, I.N.F.N. of Naples

6. Pigi Paolucci, I.N.F.N. of Naples
DCS connection Schema
I.N.F.N. Naples
SY1527
20 CANbus lines
XDAQ
PVSS
12 CANbus lines
splitter
HV crates
LV + Temp
LB crate
Detector
LV + Temp
LB crate
I2C
I2C
FEB
1 optical fibers per
Master Link Boards
~ 300 fibers (barrel)
LV + Temp
LB crate
LV + Temp
LB crate
I2C
I2C
FEB
21/09/2018
Pigi Paolucci, I.N.F.N. of Naples

7. Pigi Paolucci, I.N.F.N. of Naples
Link Board Schema
21/09/2018
Pigi Paolucci, I.N.F.N. of Naples

8. 96 channels + 96 channels + 96 channels
Electronic architecture barrel sectors
5 MasterLinkBoards SlaveLinkBoards
1 SLB
1 SLB
RB4
96 channels
96 channels
1 MLB
1 MLB
RB3
96 channels
96 channels
1 SLB
1 SLB
1 MLB
96 channels + 96 channels + 96 channels
RB2
1 SLB
1 SLB
96 channels + 96 channels
1 SLB
1 SLB
96 channels + 96 channels
RB1
1 MLB
1 MLB
96 channels + 96 channels
Box
MLB
SLB
Sec 4-10 1 5 10
Other sec 8
Wheel 12 60
Barrel
300
500
5 optical links/sectors
60 optical link/wheel
300 optical link barrel