RPC data quality monitoring - Faculty of Physics University of Warsaw

RPC data quality monitoring - Faculty of Physics University of Warsaw

Filter Farm and Physics Monitor
CERN, 12.05.2004
RPC data
quality monitoring
Grzegorz Wrochna
Soltan Institute for Nuclear Studies, Warsaw
Resistive Plate Chambers
R (cm)
800
startup upgrade
700
staged
600
500
η=1.6
400
HO
300
η=2.1
200
100
0
0
Barrel RPC:
• RB 1,2 = 2 layers
200
• RB 3,4 = 1 layer
• 480 rectangular chambers
• 75 000 strips || beam
400
600
800
1000
1200
Z (cm)
Endcap RPC:
• RE 1,2,3,4,(5) = 1 layer
• 540 trapezoidal chambers
• 80 000 radial strips
CMS
RPC Muon Tr igger - gener al layout
Detector
Detector
Per ipher y
distance
max 16 m
Fr ont End
Link Boxes
Boar ds
(LBxs)
(FEBs)
Counting Room
distance
90 m
optical
660 (*756)
RPC Tr igger Racks
to GMT
2x4 muons
to DAQ
3 Slinks
electr ical cables
~10 k (11,5)
optical
96
Hcal H0
(*) - with RE5
CMS CPT Week, CERN, 01.11.2003
Grzegorz Wrochna, Warsaw
RPC data quality monitoring
Chamber performance:
• dead channels
• noise rate
• cluster size
• time resolution
• synchr. wrt LHC clock
• detector efficiency
DCS/LPC
DCS/LPC
DCS/LPC (noise),
DCS/LPC
DCS/LPC
DAQ/EVF
LPC = Local PC
DAQ/EVF (muons)
Data integrity:
•
•
•
•
broken channels
DCS/LPC
link occupancy
DCS/LPC
relative synchronization of channels
channel order (in space and time)
DCS/LPC, DAQ/EVF
DCS/LPC, DAQ/EVF
Trigger algorithm check:
• test patterns
DCS/LPC
• compare with simulated trigger response
DCS/LPC, DAQ/EVF
• check with other triggers (prescaled, CSC, DT), DAQ/EVF
Calibration:
• chamber alignement,
• trigger patterns,
DAQ/EVF
DAQ/EVF
Layout of the RPC Trigger System
Detector
Periphery
Detector
Counting Room
Trigger Crate (12)
Link Box
LINK BOARD (Slave)
FEB
SPLITTER BOARD
LINK BOARD (Master)
FEB
FEC
LMUX
electrical
TRIGGER BOARD
Rx
LMUX
FEC
Tx
Rx
CONTROL BOARD
CCU
136 boxes
(260 CBs)
optical
Fan
Out
Tx
Rx
Tx
60
PAC
SORTER Backplane
GB
&
SORTER
Readout
Concentr.
PAC
optical
Sorter Crate (1)
108
SORTER
SORTER
SORTER
SORTER
SORTER
2
SORTER
12
756 links
144 links/crate
+84 HO links 1732/total
SORTER BOARD
(on Backplane)
1
SORTER
to
Global
Muon
Trigger
SORTER
SORTER
108 GOH
links
data
control (DCS)
GB & SORTER BOARD
DATA
CONCENTRATOR
CARD
EVENT
CONCENT
3
to
DAQ
3 Slinks
TTc Rx
Diagnostics
CMS Week, CERN March 16. 2004
Ignacy Maciek Kudla, Warsaw University
electrical
electrical
Wojciech M. ZABOLOTNY, WUT – p. 2
Data flow through the system
Detector
Periphery
Detector
Counting Room
Trigger Crate (12)
Link Box
LINK BOARD (Slave)
FEB
SPLITTER BOARD
TRIGGER BOARD
SORTER Backplane
DAQ data stream
Rx
LMUX
FEC
LINK BOARD (Master)
FEB
FEC
LMUX
electrical
Tx
Rx
CONTROL BOARD
CCU
136 boxes
(260 CBs)
optical
Fan
Out
Tx
Rx
Tx
60
PAC
GB
&
SORTER
Readout
Concentr.
PAC
optical
Sorter Crate (1)
108
SORTER
SORTER
SORTER
SORTER
SORTER
2
SORTER
12
756 links
144 links/crate
+84 HO links 1732/total
SORTER BOARD
(on Backplane)
1
SORTER
to
Global
Muon
Trigger
SORTER
SORTER
108 GOH
links
data
control (DCS)
GB & SORTER BOARD
DATA
CONCENTRATOR
CARD
EVENT
CONCENT
3
to
DAQ
3 Slinks
TTc Rx
Diagnostics
CMS Week, CERN March 16. 2004
Ignacy Maciek Kudla, Warsaw University
electrical
electrical
Wojciech M. ZABOLOTNY, WUT – p. 3
Data flow through the system
Detector
Periphery
Detector
Counting Room
Trigger Crate (12)
Link Box
LINK BOARD (Slave)
FEB
SPLITTER BOARD
TRIGGER BOARD
Sorter Crate (1)
SORTER Backplane
Trigger data stream
Rx
LMUX
FEC
LINK BOARD (Master)
FEB
FEC
LMUX
electrical
Tx
Rx
CONTROL BOARD
CCU
136 boxes
(260 CBs)
optical
Fan
Out
Tx
Rx
Tx
60
PAC
GB
&
SORTER
Readout
Concentr.
PAC
optical
108
SORTER
SORTER
SORTER
SORTER
SORTER
2
SORTER
12
756 links
144 links/crate
+84 HO links 1732/total
SORTER BOARD
(on Backplane)
1
SORTER
to
Global
Muon
Trigger
SORTER
SORTER
108 GOH
links
data
control (DCS)
GB & SORTER BOARD
DATA
CONCENTRATOR
CARD
EVENT
CONCENT
3
to
DAQ
3 Slinks
TTc Rx
Diagnostics
CMS Week, CERN March 16. 2004
Ignacy Maciek Kudla, Warsaw University
electrical
electrical
Wojciech M. ZABOLOTNY, WUT – p. 4
Data flow through the system
Detector
Periphery
Detector
Counting Room
Trigger Crate (12)
Link Box
LINK BOARD (Slave)
FEB
SPLITTER BOARD
DCS data stream
LINK BOARD (Master)
FEB
FEC
LMUX
electrical
TRIGGER BOARD
Rx
LMUX
FEC
Tx
Rx
CONTROL BOARD
CCU
136 boxes
(260 CBs)
optical
Fan
Out
Tx
Rx
Tx
60
PAC
SORTER Backplane
GB
&
SORTER
Readout
Concentr.
PAC
optical
108
Diagnostics
CMS Week, CERN March 16. 2004
SORTER
SORTER
SORTER
SORTER
2
SORTER
12
SORTER BOARD
(on Backplane)
1
SORTER
to
Global
Muon
Trigger
SORTER
SORTER
108 GOH
links
Ignacy Maciek Kudla, Warsaw University
GB & SORTER BOARD
SORTER
756 links
144 links/crate
+84 HO links 1732/total
data
control (DCS)
TTc Rx
Sorter Crate (1)
DATA
CONCENTRATOR
CARD
EVENT
CONCENT
electrical
3
to
DAQ
3 Slinks
electrical
Wojciech M. ZABOLOTNY, WUT – p. 5
Layout of the RPC Trigger System
Detector
Periphery
Detector
Counting Room
Trigger Crate (12)
Link Box
LINK BOARD (Slave)
FEB
SPLITTER BOARD
LINK BOARD (Master)
FEB
FEC
LMUX
electrical
TRIGGER BOARD
Rx
LMUX
FEC
Tx
Rx
CONTROL BOARD
CCU
136 boxes
(260 CBs)
optical
Fan
Out
Tx
Rx
Tx
60
PAC
SORTER Backplane
GB
&
SORTER
Readout
Concentr.
PAC
optical
Sorter Crate (1)
108
SORTER
SORTER
SORTER
SORTER
SORTER
2
SORTER
12
756 links
144 links/crate
+84 HO links 1732/total
SORTER BOARD
(on Backplane)
1
SORTER
to
Global
Muon
Trigger
SORTER
SORTER
108 GOH
links
data
control (DCS)
GB & SORTER BOARD
DATA
CONCENTRATOR
CARD
EVENT
CONCENT
3
to
DAQ
3 Slinks
TTc Rx
Diagnostics
CMS Week, CERN March 16. 2004
Ignacy Maciek Kudla, Warsaw University
electrical
electrical
Wojciech M. ZABOLOTNY, WUT – p. 6
C M S
L B fu n c tio n a litie s
w in d o w
S y n c h p e r io d
C o d e r
d e la y
G O L
V c se l
T B
d e la y
(e d g e ,
p u ls e d u r a tio n )
F E B
S n a p sh o t
T e st
p u ls e s
B x h is to r y
R a te a fte r sy n c h
T T C r x
T T C
n o n e
L 1 A
p r e tr ig 0
p r e tr ig 1
B C N 0
c h a m b e r s
C M S W e e k , J u n e 3 , 2 0 0 3
R a te b e fo r e sy n c h
tr ig g e r
F la s h
o n b o a r d h is to g r a m s
lo c a l b u s
F P G A d o w n lo a d
L B C
C B
I g n a c y M a c ie k K u d la , W a r s a w U n iv e r s ity
C M S
R e s u lts - F E B d a ta s n a p s h o ts
R B 1
" r e a l" s ig n a ls
fr o m R P C F E B 's
C M S W e e k , J u n e 3 , 2 0 0 3
R B 2
R B 1
R B 2
e d g e tr ig g e r e d s ig n a ls
fr o m R P C F E B 's
R B 1
R B 2
T e s t p u ls e te s tin g
I g n a c y M a c ie k K u d la , W a r s a w U n iv e r s ity
Beam tests
Snapshots, Clusters Size Distribution
RB3_12 9400V, muo ns ,
ave rag e c lus te rs s iz e 3.6
3000
2500
2000
1500
1000
500
0
RB3_34 9400V, muo ns ,
ave rag e c lus te rs s iz e 2.8
3000
2000
1000
0
0
2
4
6
8
RB3_12 9400V, no is e
ave rag e c lus te rs s iz e 2.1
3000
2500
2000
1500
1000
500
0
0
2
4
6
8
4000
4000
2000
2000
0
0
4
6
8
10 12 14 16 18 20 22 24 26 28 30
CMS CPT Week, CERN, 07.11.2003
6
8 10 12 14 16 18 20 22 24 26 28 30
2
4
6
8
10 12 14 16 18 20 22 24 26 28 30
RB3_34 9200V, no is e ,
ave rag e c lus te rs s iz e 2.1
8000
6000
2
4
RB3_34 9400V, no is e ,
ave rag e c lus te rs s iz e 2.5
0
6000
0
2
3000
2500
2000
1500
1000
500
0
10 12 14 16 18 20 22 24 26 28 30
RB3_12 9200V, no is e ,
ave rag e c lus te rs s iz e 1.9
8000
0
10 12 14 16 18 20 22 24 26 28 30
0
2
4
6
8
10 12 14 16 18 20 22 24 26 28 30
Grzegorz Wrochna, Warsaw
Beam tests
Histograms
The muon beam profile
CMS CPT Week, CERN, 07.11.2003
The „bx history” histogram train of 48 bx’s with muons
Grzegorz Wrochna, Warsaw
Test Pulses
Sharpness of the Synchronization Window
Test pulse directly
connected to input
channel
Test
pulse
Synchronization
window
widow
open
widow
close
window / all [%]
120
100
80
The sharpness of the
synchronization window
edge is ~0.3 ns
(one channel)
60
40
20
0
6,8
7
7,2
7,4
7,6
"window ope n" pos ition [ns ]
CMS CPT Week, CERN, 07.11.2003
Grzegorz Wrochna, Warsaw
Beam tests
Window Size and Position Scans
Ratio of chamber noise signals in
synchronization window to all measured.
CMS CPT Week, CERN, 07.11.2003
The beam bunch time shape
scanned with 1ns window
Grzegorz Wrochna, Warsaw
RPC data quality monitoring
Chamber performance:
• dead channels
• noise rate
• cluster size
• time resolution
• synchr. wrt LHC clock
• detector efficiency
DCS/LPC
DCS/LPC
DCS/LPC (noise),
DCS/LPC
DCS/LPC
DAQ/EVF
LPC = Local PC
DAQ/EVF (muons)
Data integrity:
•
•
•
•
broken channels
DCS/LPC
link occupancy
DCS/LPC
relative synchronization of channels
channel order (in space and time)
DCS/LPC, DAQ/EVF
DCS/LPC, DAQ/EVF
Trigger algorithm check:
• test patterns
DCS/LPC
• compare with simulated trigger response
DCS/LPC, DAQ/EVF
• check with other triggers (prescaled, CSC, DT), DAQ/EVF
Calibration:
• chamber alignement,
• trigger patterns,
DAQ/EVF
DAQ/EVF
RPC Trigger Algorithm
MS 4
4
0
5
1
6
3
8
5
MS 3
2T
... 9 8 7 6 5 4 3 2 1 0
MS 2
L
A
T
C
H
E
S
MS 1
4T ×
LATCHES
pt
coding
Pattern of hit strips is compared
to predefined patterns
corresponding to various pT
Output: η, φ, pT and quality:
which planes used,
how realiable pT measurement
PAttern Comparator (PAC) FPGA
as trigger processor
in the Counting Room
RPC alignement and trigger patterns
• This can be done only by DAQ / EVF (or offline)
RPC data quality monitoring
Chamber performance:
• dead channels
• noise rate
• cluster size
• time resolution
• synchr. wrt LHC clock
• detector efficiency
DCS/LPC
DCS/LPC
DCS/LPC (noise),
DCS/LPC
DCS/LPC
DAQ/EVF
LPC = Local PC
DAQ/EVF (muons)
Data integrity:
•
•
•
•
broken channels
DCS/LPC
link occupancy
DCS/LPC
relative synchronization of channels
channel order (in space and time)
DCS/LPC, DAQ/EVF
DCS/LPC, DAQ/EVF
Trigger algorithm check:
• test patterns
DCS/LPC
• compare with simulated trigger response
DCS/LPC, DAQ/EVF
• check with other triggers (prescaled, CSC, DT), DAQ/EVF
Calibration:
• chamber alignement,
• trigger patterns,
DAQ/EVF
DAQ/EVF
RPC data quality monitoring
RPC detector:
• 150 000 single-bit channels
• <<1% occupancy
No problem with:
• bandwidth, data volumes, CPU power
Potential problem:
• time needed to collect enough data
It is important to:
• provide tools (hardware and software)
• invent procedures and algorithms