Transcript Optical+cable_network_July11

Proposal for optical and cable
network of NA62 trigger system
Marián Krivda1) , Cristina Lazzeroni1) , Vlado Černý2), Tomáš Blažek2), Roman Lietava1)2)
1) University of Birmingham, UK
2) Comenius University, Bratislava, Slovakia
13/7/2011
1
Content
•
•
•
•
General strategy (old)
General strategy (new)
Old layout, response from detector and new layout respecting also the new
general strategy for:
– CEDAR
– GTK
– CHANTI
– LAV
– STRAW
– RICH
– CHOD
– SAV (IRC + SAC)
– LKR
– MUV
Summary table
13/7/2011
2
General strategy (old)
• Blow optical fiber (+ 1 spare) per a rack with
FEE => use an optical splitter to fan-out optical
signal in the rack
• Use 1 spare laser per TTCex board
• Use the optical splitter 1:4, 1:8, 1:16 as
necessary
13/7/2011
3
General strategy (new)
• Blow optical fiber – possiblity to blow only
6,12 or 24 fibers
• Use an optical splitter 1:4, 1:8, 1:16 as
necessary to fan-out optical signal in the rack
where are LTUs or in destination where is FEE
of sub-detector
• Use 1 spare laser per TTCex board
13/7/2011
4
CEDAR (Cristina Lazzeroni)
• The CEDAR has 2 unknown at the moment :
how many TEL62 we need,
and where exactly they will be located.
If we assume they are 2 TEL62, then your
proposal is fine.
Since the rack will be at the CEDAR place, it
doesn't have a number yet,
but it will.
13/7/2011
5
CEDAR (new)
LTU + TTCex(2 lasers) + optical splitter 1:4
2 optical fibers + 1 LVDS cable
LTU
TTCex
TTCoc 1:4
TEL62
Trig. data from L0proc
CHOKE/ERROR
Fan-in
LVDS (7)
Burst
TEL62
CHOKE/ERROR
spare
CHOKE/ERROR
TTC ch A
TTC ch B
clock
13/7/2011
40 MHz
clock
source
Rack EB20
Rack CEDAR-01
6
GTK (Angelo Cotta Ramusino)
• First I should point out that the TTC links would be needed only where the
off-detector GTK readout electronics is located and that is in the
electronics house, not in the pit.
My baseline design proposal was foreseeing one TTC link per GTK ASIC and
therefore:
- 10 TTC links per GTK STATION; being there 3 stations this means 30 links
total
• A different implementation is possible in which each station would receive
just one TTC fiber, convert it and distribute the TTC information locally by
an electrical network; in this case then only one TTC fiber per station
would be needed.
This second approach is trickier and so I would prefer that You foresee, at
this moment, to run the 30 fibers to the GTK off-detector electronics,
unless costs or other reasons would forbid it.
13/7/2011
7
GTK (new)
LTU + TTCex(4 lasers) + 3 x optical splitter 1:16
6 optical fibers + 1 LVDS cable
LTU
TTCex
Trig. data from L0proc
6
TTCoc 1:16
GTK1
CHOKE/ERROR
Fan-in
LVDS (7)
Burst
GTK2
CHOKE/ERROR
CHOKE/ERROR
GTK2
TTC ch A
TTC ch B
clock
13/7/2011
40 MHz
clock
source
clock
Rack EB20
Farm room
rack S14 + rack S15 + rack S16
8
CHIANTI (Fabio Ambrosino)
Dear Cristina, since we will use just one TEL62 the scheme looks fine for the
CHANTI.
The rack name as far as I understood is just CHANTI-01 in TTC8.
Just as a remainder, I recall you that due to a misunderstanding (I was not
reacting promptly at the time the order was placed since I was taking care of
my father in the hospital) I was ordering for the CHANTI much more lasers
than actually needed (10 instead of 2 !!), so that 8 of them can now be used as
spares for the collaboration or for the individual groups who did not order the
spares. Of course as I already wrote to Ferdi few months ago, if this can be
done by scaling part of their cost from Napoli quota it would be very
welcome, but in case is not possible there are no problems.
Best regards,
Fabio
13/7/2011
9
CHANTI (new)
LTU + TTCex(2 lasers)
2 optical fibers + 1 LVDS cable
LTU
TTCex
Trig. data from L0proc
CHOKE/ERROR
TEL62
LVDS (7)
Burst
CHOKE/ERROR
spare
TTC ch A
TTC ch B
clock
13/7/2011
40 MHz
clock
source
clock
Rack EB20
Rack CHANTI-01
10
LAV
TTCex
1+1 fiber
IF we keep the rack 29 configuration:
3 fiber + 3 spares
Station
Position (m)
1+1 fiber
D Positions (m)
1+1 link
LAV 1
121.953
LAV 2
129.563
7,6
LAV 3
137.173
7,6
LAV 4
144.783
7,6
LAV 5
152.393
7,6
LAV 6
165.903
13,5
LAV 7
173.413
7,5
LAV 8
180.923
7,5
LAV 9
193.184
12,3
LAV10
203.642
10,5
LAV11
218.203
14,6
13/7/2011
LAV12
238.835
20,6
1+1 fiber
1:8 splitter
1+1 link
1:8 splitter
1+1 link
1:8 splitter
11
The LAV positions (Mauro Raggi)
Station
Position (m)
D Positions (m)
LAV 1
121.953
LAV 2
129.563
7,6
LAV 3
137.173
7,6
LAV 4
144.783
7,6
LAV 5
152.393
7,6
LAV 6
165.903
13,5
LAV 7
173.413
7,5
LAV 8
180.923
7,5
LAV 9
193.184
12,3
LAV10
203.642
10,5
LAV11
218.203
14,6
LAV12
238.835
20,6
13/7/2011
In each of this position you will
find a rack with 1TEL62 with a
TTC receiver
Need in total 12 x 2 connections
assuming that each station
receive in its rack 1 fiber and 1
spare
12
LAV - Computing attenuation
LAV1
LAV2
LAV3
LAV4
LAV5
LAV6
LAV7
LAV8
LAV9
LAV10
LAV11
LAV12
122,0
129,6
137,2
144,8
152,4
165,9
173,4
180,9
193,2
203,6
218,2
238,8
7,6
7,6
7,6
7,6
13,5
7,5
7,5
12,3
10,5
14,6
20,6
d A1 Rack
22,8 m
db att.
10,7
d A5 Rack
28,5 m
db att
10,7
d A9 Rack
45,7 m
db att
10,7
I assume that the 1:8 splitters are sitting in the racks of:
ANTI-A1 one 1:8
ANTI-A5 one 1:8
ANTI-A9 one 1:8
If I understood correctly the constraints we should have a ~ 10db attenuation on
13/7/2011
13
each line
LAV - Material required
(Mauro Raggi)
•
•
•
•
One LTU+TTCex with 5 lasers
3 1:8 optical splitters +1 spare
6 optical fibers TTCex splitters
24 connections splitters-TEL62
13/7/2011
14
STRAW (Peter Lichard)
Hi Marian,
we re-evaluated our system and we would like to check with you this proposal
We would like to have 1 TTCex and 1 LTU underground controlling all the detector.
We imagine TTCex having 1 laser + 1 spare laser. The distribution for 4 chambers
should be done with 1:4 optical splitter followed by 1:16 optical splitter for on-chamber modules.
We would like to have also a second set of TTex+LTU for lab and eventual spare.
From back-envelope calculation on attenuation this scheme seems to provide sufficient optical power.
Please, could you check this scheme if it really works?
TTCex -> 1:4 -> 1:16
If this proposal is OK for you, we need to have
2 pcs TTCex with 2 lasers
2 pcs LTU
1 pcs 1:4 splitter
4 pcs 1:16 splitter
Thanks for discussion!
cheers
Peter
13/7/2011
15
STRAW (new)
LTU + TTCex(2 lasers) + TTCoc 1:4 + 4x optical
splitter 1:16 + 6 optical fibers + 1 LVDS cable
LTU
TTCex
TTCoc
1:4
Trig. data from L0proc
TTCoc 1:16
6
Module
1
Fan-in
LVDS (7)
Module
2
Burst
CHOKE/ERROR
Module
3
CHOKE/ERROR
TTC ch A
TTC ch B
clock
13/7/2011
CHOKE/ERROR
40 MHz
clock
source
Module
4
clock
Rack EB20
Rack STRAW1-01 + rack STRAW1-02
Rack STRAW2-01 + rack STRAW2-02
16
RICH (Patrizia Cenci)
Dear Marian,
thank you for your message.
Given the RICH needs, your proposal for the TTC cable network for the
RICH should have a splitter 1:8 at the place of the splitter 1:4
suggested by you, which is not sufficient for us.
Could you, please, update the summary table in your slide n. 15
according to that?
Let me remind that we already agreed with Cristina, in november 2010,
the purchase of 1 TTCex + 10 lasers for the RICH.
Thank you so much.
Best regards,
Patrizia
13/7/2011
17
RICH (new)
LTU + TTCex(2 lasers) + optical splitter 1:8
6 optical fibers + 1 LVDS cable
LTU
TTCex
CHOKE/ERROR
TTCoc 1:8
Trig. data from L0proc
TEL62
LVDS (7)
CHOKE/ERROR
Burst
TEL62
CHOKE/ERROR
spare
TTC ch A
TTC ch B
clock
13/7/2011
40 MHz
clock
source
Fanin
TEL62
TEL62
clock
Rack EB20
Rack RICH-01
18
CHOD (Patrizia Cenci)
Dear Marian,
as far as I know, your proposal for the NA62 CHOD TTC cable network is correct, however I'd like to remind you that the CHOD in NA62 is not
a Perugia INFN responsibility and we are funded by INFN only for the RICH (you'll know very soon about our requests for the RICH), according
to the NA62 MOU.
At present, I'm taking care of making the old NA48 CHOD working at the 2012 Techical Run, by borrowing existing HV and TDAQ modules
within the collaboration, at no costs (but some manpower). I hope that will also be possible in the case of the TTC cable network for the 2012
run. This possibility will be soon investigated.
As far as Perugia concerns, I cannot say more that that, I'm sorry: of course, Perugia will not be able to buy the TTC cable network proposed
for the CHOD.
Thank you.
Best regards,
Patrizia
p.s. the CHOD rack will be at the LAV12/IRC place, assuming that the final detector will be kept at the present position.
13/7/2011
19
CHOD (new)
LTU + TTCex(2 lasers)
6 optical fibers + 1 LVDS cable
LTU
TTCex
Trig. data from L0proc
CHOKE/ERROR
TEL62
LVDS (7)
Burst
CHOKE/ERROR
spare
TTC ch A
TTC ch B
clock
13/7/2011
40 MHz
clock
source
clock
Rack EB20
Rack CHOD-01
20
IRC (Venelin Kozhuharov)
Dear Marian,
I'm looking at your presentation which you have distributed for the optical and cabling network. Here is what I have understood as
far (which might not be 100% correct):
- The IRC/SAC system has ordered just 1 LTU and 1 TTCex with 3 lasers. Since the LTU is only one we need only 1 LVDS cable for
trigger data.
- The TTCex and the LTU for the IRC are located in the common clock crate.
- The IRC RO will be located in a rack which is close to the rack for LAV12. Most probably the SAC RO will be located in the same
rack (still not sure for that) since we aim to have common TELL62 for both detectors. Even if we use different TELL62s for the two
detector (in case of limited network bandwidth for data transfer) 2 optical fibers are sufficient from the 2 lasers of the TTCex(we
didn't choose the option to use a splitter).
- An additional optical fiber would be of use in case of failure of one of the conventional fibers. It can be from the third laser of the
TTCex. In case of two different locations of the RO then 1 additional fiber would be necessary for each of the ROs (for example
from the thirds laser). So I would say that 4 fibers are completely OK with us and might be even more than enough.
As a conclusion I think that your suggestion is fine for us.
Few considerations:
I suppose the distance from the TTCex to the IRC rack (i.e. LAV12 rack) or the probable SAC rack (which in any case won't be
further than the end of ECN3) is not that much to require intermediate devices to recover the signal. Since we are going to
connect the optical cables directly to the TELL62 we would need attenuators at the TTCex. I suppose one for each channel
so three in total. Would you think that usage of a TTCoc would be a better idea and would have some advantage?
Thanks and greetings
Venelin
13/7/2011
21
IRC/SAC (new)
LTU + TTCex(3 lasers)
4 optical fibers + 1 LVDS cable
LTU
TTCex
IRC
Trig. data from L0proc
CHOKE/ERROR
Fan-in
LVDS (7)
Burst
SAC
CHOKE/ERROR
CHOKE/ERROR
spare
TTC ch A
TTC ch B
clock
13/7/2011
40 MHz
clock
source
clock
Rack EB20
Rack IRC-01
22
LKR readout (new)
LTU + TTCex(2+2 lasers), 10 1x4 splitters
6 optical fibers + 1 LVDS cable
LTU
TTCex
TTCoc 1:4
CREAM Crate 1
Trig. data from L0proc
TTCoc 1:4
LVDS (7)
CREAM Crate 2
6
Burst
CREAM Crate 3
CREAM Crate 4
…..
CHOKE/ERROR
CREAM Crate
26
CREAM Crate
27
CREAM Crate
28
TTC ch A
TTC ch B
clock
13/7/2011
40 MHz
clock
source
clock
Rack EB20
CHOKE/ERROR
Rack EB01 ….EB08
Fan-in
23
LKr L0 (Riccardo Fantechi)
• For the CREAM readout we will have 28 crates with 28 TTCrx in a trigger
board. Each crate will have an internal distribution of the clock info to the
various (16/crate) CREAM boards. And all the boards will send back their
choke/error signals to the trigger board, where they will be OR-ed and
sent, from each crate, to a fan-in for the LTU.
• We had a preliminary discussion on a possible scheme and the outcome is
the following: 2 (+2 spare) fibers go to the CREAM racks (1 at left, 1 at
right) and there a 1 to 16 splitter will fan-out the signals to the 28 crates.
This is one possible way which will require some care in laying down the)
with a 1 to fibers to the individual crates. An alternative will be 8 fibers (1
per rack4 splitter each and a better layout. Add if necessary attenuators if
needed.
13/7/2011
24
LKr L0 (new)
LTU
TTCex
6
TTCoc 1:16
Crate #1
Trig. data from L0proc
LVDS (7)
TTCoc 1:16
Burst
Crate #2
TTCoc 1:16
CHOKE/ERROR
Crate #3
TTC ch A
TTC ch B
clock
13/7/2011
40 MHz
clock
source
CHOKE/ERROR
clock
Rack EB20
Rack EB09
25
MUV (Rainer Wanke)
Dear Cristina and Marian,
I apologize for the late answer:
The MUV1+2+3 will be located in one single rack in the electronic barrack with 2 to 4
TEL62 boards in total. Therefore, in principle only 2 fibers (1+1 spare) would be
needed together with 1 1:4 optical splitter.
However, since we would like to have the possibility to run each of MUV1, MUV2, and
MUV3 in standalone mode (they are quite different from each other), I propose to
have 3+3spare fibers for the MUV1+2+3. (I hereby assume, that it is possible to have
two TEL62 boards with two different TTC signals in one crate, is this correct?)
We should also still foresee 1 TTCoc 1:4 module, since the MUV3 will most probably
use two TEL62 boards.
Bottom line: 3+3 fibers + 1 TTCoc 1:4 for the MUV
Cheers, Rainer
I forgot:
As everything is in one single rack, one spare optical fiber may be enough.
13/7/2011
26
MUV (new)
LTU + TTCex(3 lasers)
4 optical fibers + 1 LVDS cable
LTU
TTCex
Trig. data from L0proc
TTCoc 1:4
spare
MUV
1 +2
LVDS (7)
CHOKE/ERROR
Fan-in
Burst
spare
MUV
3
CHOKE/ERROR
CHOKE/ERROR
TTC ch A
TTC ch B
clock
13/7/2011
40 MHz
clock
source
clock
Rack EB20
Rack MUV-01
27
MUV (comments)
• Ordered 1 LTU, 1 TTCex (1 x 10 = 10 lasers) –
• Does MUV need 10 lasers ?
• If MUV wants to run MUV1,2,3 independently
in stand-alone then it is necessary to have 3
LTUs + 3 TTCex boards
13/7/2011
28
Optical attenuation
•
•
•
•
TTCex laser has optical power -3dB.
Losses in optical fiber == 0.1 dB/100m
Losses on ST/PC connector == 0.5 dB
Losses in optical splitter 1:4==7dB, 1:8==10.2 dB,
1:16==12.5 dB
The maximum allowed losses are 30 dB. If it is more
than TTC receiver (TRR-1B43) doesn`t work. So, you can
make any combination of optical fibers, connectors and
optical splitters until you reach 30dB.
13/7/2011
29
Test of optical splitters
• Attenuation spread in all channels
– 1:4
– 1:8
– 1:16
• Attenuation of 2 TTCoc in series
– 1:4 + 1:16
– 1:4 + 1:4
13/7/2011
30
Farm room
Single mode optical fiber ST-ST connector
ST14
ST15
ST16
GTK1
GTK2
GTK3
Patch cord
(single mode optical fiber ST-ST connector)
LVDS cable for CHOKE/ERROR
(not jet specified)
Electronics barrack
6
EB30
EB09
EB08
EB01
MUV
1+2+3
LKr
L0
LKr
read
out
LKr
read
out
6
EB20
CLK
L0TP
LTU
TTCex
6
6
6
1 for LAV (6,7,8,9)
6
1 for LAV(1,2,3,4,5)
5 spare
6
1 for CEDAR
1 for CHANTI
4 spare
2 for STAW (1,2)
3 spare
CED
AR
CHA
NTI
LAV
1
LAV
2
LAV
3
LAV
4
LAV
5
LAV
6
LAV
7
LAV
8
CED
AR-01
CHAN
TI-01
LAV1
-01
LAV2
-01
LAV3
-01
LAV4
-01
LAV5
-01
LAV6
-01
LAV7
-01
LAV8
-01
13/7/2011
1 for LAV(10,11)
2 for STRAW (3,4)
1 for RICH
2 spare
STR
AW
1
STR
AW
2
STR
AW1
-01
STR
AW2
-01
LAV
9
LAV9
-01
LAV
10
LAV10
-01
STR
AW
3
STR
AW
4
STR
AW3
-01
STR
AW4
-01
LAV
11
6 1 for LAV (12)
2
CHOD
IRC
RIC
H
LAV11 RICH
-01
-01
1 for CHOD
1 for IRC
3 spare
LAV
12
CHO
D
LAV12 CHOD
-01
-01
IRC
IRC
-01
31
Summary (ECN3 setup)
Num. of
LTU
boards
Num. of
TTCex
Boards
CEDAR
1
1
2
1
-
-
O.K.
GTK
1
1
3
-
-
3
O.K.
CHANTI
1
1
10
-
-
-
O.K.
LAV
1
1
10
-
4
-
O.K.
STRAW
1
1
4
1
-
4
O.K.
RICH
1
1
10
-
1
-
O.K.
CHOD
1
1
2
-
-
-
O.K.
IRC/SAC
1
1
10
-
-
-
O.K.
LKr readout
1
1
2
10
-
-
O.K.
LKr/L0
1
1
6
-
-
3
O.K.
MUV
1
1
10
1
-
-
O.K.
TDAQ
1
1
4
-
-
-
O.K.
13/7/2011
Num. of Num. of Num. of Num. of Confirmed
lasers on TTCoc
TTCoc
TTCoc
by
TTCex
1:4
1:8
1:16
detector
(email)
32
LTU + TTCex order
• CEDAR: 1 LTU, 1 TTCex (1 x 2 = 2 lasers)
• GTK: 3 LTUs, 3 TTCex (3 x 3 = 9 lasers) -> NO spare laser on TTCex !
• CHANTI: 1 LTU, 1 TTCex (1 x 10 = 10 lasers) -> They need only 2 lasers !
• LAV: 2 LTUs, 2 TTCex (1x10 + 1x4 = 14 lasers)
• STRAW: 2 LTUs, 2 TTCex (2 x 4 = 8 lasers)
• RICH: 1 LTU, 1 TTCex (1 x 10 = 10 lasers) -> Do they need 10 lasers ?
• CHOD: 1 LTU, 1 TTCex (1 x 2 = 2 lasers)
• IRC/SAC: 1 LTU, 1 TTCex (1 x 10 = 10 lasers) -> Do they need 10 lasers ?
• LKR: 2 LTUs, 2 TTCex (2 x 2 = 4 lasers)
• LKR/L0: 3 LTUs, 4 TTCex (1 TTCex is spare) (4 x 6 = 24 lasers)
• MUV: 1 LTU, 1 TTCex (1 x 10 = 10 lasers) -> Do they need 10 lasers ?
• TDQ: 2 LTUs, 2 TTCex (2 x 4 = 8 lasers)
• SPARE: 1 TTCex (1 x 4 = 4 lasers)
GRAND TOTAL: 20 LTUs, 22 TTCex, 115 lasers
13/7/2011
33
TTCoc order
• CEDAR: 1 TTCoc 1:4
• GTK: 3 TTCoc 1:16
• CHANTI: --• LAV: 4 TTCoc 1:8
• STRAW: 1 TTCoc 1:4, 4 TTCoc 1:16
• RICH: 1 TTCoc 1:8
• CHOD: --• IRC/SAC: --• LKR: 10 TTCoc 1:4
• LKR/L0: 3 TTCoc 1:16
• MUV: 1 TTCoc 1:4
• TDQ: --• SPARE: --GRAND TOTAL: 13 TTCoc 1:4, 5 TTCoc 1:8, 10 TTCoc 1:16
13/7/2011
34
Optical splitter price
• 1x4 SM Splitter 19" 1U Rack Mountable type
Connector & Adpator type : ST Optical Spec :
S-grade Unit price= 120 €
• 1x8 SM Splitter 19" 1U Rack Mountable type
Connector & Adpator type : ST Optical Spec :
S-grade Unit price= 145 €
• 1x16 SM Splitter 19" 1U Rack Mountable type
Connector & Adpator type : ST Optical Spec :
S-grade Unit price= 215 €
13/7/2011
35
Summary (ordered)
Num. of
LTU
boards
Num. of
TTCex
boards
CEDAR
1
1
2
1
-
-
O.K.
GTK
3
3
3+3+3
-
-
3
O.K.
CHANTI
1
1
10
-
-
-
O.K.
LAV
2
2
10 + 4
-
4
-
O.K.
STRAW
2
2
4+4
1
-
4
O.K.
RICH
1
1
10
-
1
-
O.K.
CHOD
1
1
2
-
-
-
O.K.
IRC/SAC
1
1
10
-
-
-
O.K.
LKr readout
2
2
2+2
10
-
-
O.K.
LKr/L0
3
4
6+6+6+6
-
-
3
O.K.
MUV
1
1
10
1
-
-
O.K.
TDAQ
2
2
4+4
-
-
-
O.K.
SPARE
-
1
4
1
1
1
13/7/2011
Num. of Num. of Num. of Num. of Confirmed
lasers on TTCoc
TTCoc
TTCoc
by
TTCex
1:4
1:8
1:16
email
36
Electronic Rack Infrastructure
1/ Rack Layout in TCC8
5 April 2011
NA62 TC Meeting, Gilles MAIRE PH/DT-DI
37
Electronic Rack Infrastructure
1/ Rack Layout in ECN3
5 April 2011
NA62 TC Meeting, Gilles MAIRE PH/DT-DI
38
Electronic Rack Infrastructure
1/ Rack Layout in Electronics Barrack
Drawn by R. Fantechi
5 April 2011
NA62 TC Meeting, Gilles MAIRE PH/DT-DI
39
Electronic Rack Infrastructure
1/ Rack Layout in PC Farm Room
Drawn by R. Fantechi
5 April 2011
NA62 TC Meeting, Gilles MAIRE PH/DT-DI
40
Electronic Rack Infrastructure
2/ First Proposal of Rack
Rack with Ventilator
+ Cost (~1230chf) per rack.
- Power dissipated in the cavern.
- No monitoring of rack.
- No power cut in case of fire or
overheat.
- No alarm in the fire brigade.
- The cost include the purchase of 1 LHC rack,
1 ventilator and 1 cable trays.
- Additional ventilator cost 300chf.
5 April 2011
NA62 TC Meeting, Gilles MAIRE PH/DT-DI
41
Electronic Rack Infrastructure
2/ Second Proposal of Rack (similar LHC)
Rack with LHC Rack monitoring
- Cost (~1960chf) per rack.
- Power dissipated by air water exchanger.
Need to install water circuit.
+ Monitoring of rack (temp, humidity,
turbine…) with PVSS supervision by CAN bus.
+ Possibility of power cut in case of fire or
overheat.
+ Possibility of alarm in the fire brigade.
- The cost include the purchase of 1 LHC rack, 1 rack monitoring,
1 heat exchanger, 1 deflector and 1 cable trays.
- Additional heat exchanger cost 90chf.
5 April 2011
NA62 TC Meeting, Gilles MAIRE PH/DT-DI
42
GTK racks
13/7/2011
43