LAV report

LAV electronics status report
Mauro Raggi and Francesco Gonnella
TDAQ meeting
NA62 Collboration Meeting
1-5 September 2014 Ferrara
Hardware status
the construction of the
LAV is over everything
is in its place
LAV 12 is in place!
“15 tonnes slotted into a
crevasse with centimeters
to spare and set down on
target to within 2mm in one
fell swoop without breaking
a sweat.
Man that guy is good!”
M. D. Moulson
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
2
Test stand at CERN
The LAV front-end electronic
test stand has been moved to
CERN to allow in situ calibration
and testing of the boards.
Test of all the 86 boards have
been performed at CERN by F.
Gonnella, V. Kozhuharov, S.
Martellotti
The facility will be also used to
characterize the boards we
have provided to CHOD and
CHANTI
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
3
Boards performance
 5 boards have problems, 1 is still in Frascati

83/89 boards are ready

81/81 are installed

we have only 2 fully working spares

Investigations to fix problems on the remaining 5 spare is ongoing
Threshold offset [mV]
Mauro Raggi - Laboratori Nazionali di Frascati
Time resolution [ns]
3 September 2014
4
Summary of LAV commissioning
Crate
PS
HV
Rasp
TEL62
Cablin
g
Platform
FEE
DCS
1
yes
yes
yes
yes
old
redo
-
5
ready
2
yes
yes
yes
yes
old
redo
-
5
ready
3
yes
yes
yes
yes
yes
yes
-
5
ready
4
yes
yes
yes
yes
yes
yes
-
5
ready
5
yes
yes
yes
yes
yes
yes
-
5
ready
6
yes
yes
yes
yes
yes
yes
yes
8
ready
7
yes
yes
yes
yes
yes
yes
yes
8
ready
8
yes
yes
yes
yes
no
~yes
yes
8
ready
9
yes
yes
yes
yes
no
~yes
no
8
ready
10
yes
yes
yes
yes
no
~yes
no
8
ready
11
problem
yes
offline
yes
no
~yes
yes
8
ready
12
yes
yes
offline
yes
no
no
-
8
ready
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
5
Working and tested equipment
 FEE boards: fully tested assembled and cabled up to 11 LAV

LAV 12 cables in production.
 Status of TEL62 v3

5 TEL62 V3: LAV3, LAV4, LAV5, LAV6, LAV7

2 old TEL62: in LAV1 (not working so far) and LAV2 (working)
 DCS to be commissioned

All the stations are connected

Software to be tested
 Crate Wiener

All the crate are available and connected to DCS

Problems with the LAV11 crate (goes OFF with low voltage on 48V)
 HV crate

All are installed and connected up to LAV 11.

Up to A10 crates are online (DCS?)
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
6
LAVFEE to TDCB cabling
 In all the crates with a new tel62 board (A3, A4, A5, A6, A7) we have
connected TDCBs and LAVFEE boards.
 This is NOT an easy task, as there are plenty of noisy and dead channels.
 The situation is not stable as, apparently, problems might be solved (in
lucky cases) just by “massaging” the cables…
 We managed to get rid of noisy channels in LAV3, 4, 5
 According to me, this will be a constant problem during the run, and we
will be forced to mask noisy channels, that will fill up the buffers and
prevent the DAQ to work properly.
LAV station
Noisy channels
Dead channels
Anti-A3
0
1
Anti-A4
0
1
Anti-A5
0
0
Anti-A6
1
?
Anti-A7
3
?
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
7
Marco’s questions I
 Tests already performed with other parts of the system

Tested the Torino’s L0TP communication and primitive transmission

Tested PC FARM data transfer (only stations 1, 2, 3 with old TEL62)


Tested DCS communication


Periodic trigger used with cosmic rays
Few tests so far, more needed
LAV system has no configuration files so far

We need to understand better what is needed
 End of burst data

We need a histogram of the total multiplicity channel by channel
(like tdcccounters)

Does it come from the common firmware?
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
8
Marco’s questions II
 Features which will be ready and available for the 2014 run

Full readout chain working for all the stations

L0 trigger based on the ToT and multiplicity in the station for LAV12

Can ask the minimum value of the ToT on leading only and leading
and trailing independently for high and low threshold crossing
 The missing features which will only be ready for next year, if any,
and their testing in the 2014 run

Trigger based on the full set LAV (or a subsample)


Test using eth switch as concentrator can be foreseen in 2014
LED driver boards (NIM prototype available and under test)
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
9
Marco’s questions III
 The remaining steps towards the 2014 run

Further DCS tests

Cabling of A12 to be finished

TEL62 commissioning just at the beginning
 The required sequence of procedures when the beam will be
available

Start testing data transfer for all stations (No LAV primitives in L0)

Testing quality of equalization of HV and thresholds.


If necessary tune the threshold and or HV settings
Muons

Most probably we need primitive from LAV in trigger as a stream
not in veto to get some unbiased statistical sample.
Calibrating the time resolution for online (L0) and offline

Compute time offsets for each station and each channel

Start using the L0 trigger primitives in the main trigger

Start tuning the charge reconstruction algorithm with p+p0 physics

K
Need different charges better using kaon beam
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
10
SAC and IRC readout
By Venelin Kozhuharov
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
11
IRC assembled finished
IRC assembly finished and the detector will be mounted soon
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
12
LTU
Read out scheme for SAC & IRC
RunControl
USB
GANDALF
SAC
RO PC
IRC
PC farm
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
13
Read out hardware status
Generic Advanced Numerical Device for Analytic and Logic Functions
• GANDALF standalone
– TTC on GIMLI
• Airflow frame
• SAC signals
• RO PC
• USB for configuration
and 2014 data transfer
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
14
Status of the software
•
•
GANDALF installed and fully hardware equipped
–
Can lock the clock and decode the trigger (SOB/EOB)
–
Can send timestamps for each event
–
Firmware missing:
•
circular buffer for event storage until L0
•
zero suppression, event formatting and custom packing
Connection to RO PC: USB at the moment, no optical connection
–
Hardware expected to arrive soon (PCIe optical receiver), but no date
–
Through USB: 5 words * 32 bit/event, only TS at the moment
•
Communication to RunControl and PCfarm tested and verified
•
DAQ programme under development
–
•
Based on USB for the moment, to be rewritten when the optical
receiver is available
Not small amount of work... trying to identify manpower
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
15
Conclusions
 The LAV electronics is fully produced, tested, and installed
 Most part of the system is ready to be connected to the TEL62

Connecting LAVFEE to a tel62 for a whole LAV station is not an easy
task, we need time so we need to start installing tel62 as soon as
possible
 Trigger primitive are ready to be used and partially tested with
L0TP
 Preliminary test of integration and data transfer were already
performed
 The IRC and SAC are there and the readout need some
software work to be performed.
Mauro Raggi - Laboratori Nazionali di Frascati
3 September 2014
16