RPC project
Upgrade phase I
Pierluigi Paolucci
RPC system in the forward region
• The forward region of the RPC project consists of: 4 disks equipped with 3 rings
of chambers
• The present system has 3 disks equipped with 2 rings of chambers
– Barrel trigger is done with 6 layers
– Forward trigger is now 3/3 (design was 3 out of 4)
• Phase I: 2 rings in disk 4th
• Phase II: |η| > 1.6
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Institutions
The groups from Pakistan, China and Korea have already
committed themselves to this completion.
In addition, groups from Belgium, India, and Egypt have
confirmed their involvement in the project while negotiations
with Italy are under way to provide the off-detector
electronics.
Other countries (Finland, Poland) have expressed an interest
in joining the project, although they have not yet committed
to any financial contribution.
Recently interest has been expressed from Iran and Colombia
and negotiations have started to define possible
contributions and areas of involvement.
CERN will joint the RPC project
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In red the approved
Chamber production and test
• High Pressure Laminate (HPL):
– Raw material production at the Puricelli industry near Milan
– Quality check and resistivity measurement at INFN Pavia
• The gas gaps:
•
– chambers will be produced by KODEL at Korea University. A total of about 660 (432 +
spares ) gaps are needed
Honeycomb boxes and auxiliary parts will be produced in “Beijing Axicomb Technology
Co., Ltd” (China)
Readout strips will be produced in “Beijing Gaonengkedi GT Co., Ltd” (China)
•
• Gap and chamber test sistes:
– CERN site at 904: CERN and Pakistan group, which has an outstanding experience in
chamber assembly, will provide qualified manpower for the assembly and test.
– Belgium site: The chamber construction will be the main effort of the University of
Gent. The manpower to perform the assembly will be provided by both the University
of Gent and the Vrije Universiteit Brussel.
– India site: Under India-CMS-RPC collaboration, RPC assembly and testing would be
done at two sites: Nuclear Physics Division-Bhabha Atomic Research Centre (NPDBARC) at Mumbai; and Panjab University at Chandigarh.
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Installation and commissioning
• The upgrade of the forward region is part of the RPC
project and so all the people and experts will be involved
in the commissioning and integration of the full system
• Bari group (Colaleo, Iaselli, Loddo, Maggi, Nuzzo, Pugliese) will be
involved in the quality control program:
•
Quality control of single gap at CERN
–
•
Quality control of chamber production at CERN
–
•
•
1 physicist + 2 technicians (0.3 FTE)
1 physicist + 2 technicians (0.3 FTE)
Quality control of FEB production
1 engineer ( 0.2 FTE)
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Off-chamber Electronics
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Electronics
The 144 new chambers have to be equipped with FEB, Link board and power systems :
• FEB and distribution boards will be produced under the F. Loddo supervision (project
founds)
• Power system will be ordered to the CAEN under the Napoli supervision (Pakistan budget)
• The CMS electronic/trigger groups have strongly recommended to review to “old” project
and to implement all the protections and improvements needed (comes from the experience
accumulated in these years)
• The main goals are: build an updated and more robust system and involve more groups in
the RPC trigger in order to compensate for the Warsaw dependence.
• Link Board system will be designed (revision of the old project) and produced by Napoli,
LNF and Warsaw groups:
– 24 + 2
link board crates (3.000 euro each)
78 K€
– 144 + 28 link boards (800/900 euro each)
 124 K€
– 24 + 5
control boards (900/1100 euro each)  29 K€
–
cable and connectors
 30 K€
– 8+2
LV system (CAEN)
 50 K€
– 7%
Spare for the whole RPC system costs 50 K€
o Total cost of the Link Board Project is about 361 Keuro
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Link board interests and manpower
• Napoli is interested in the design of the “up-to-date” system
– P. Paolucci, S. Buontempo, N. Cavallo (sabbatical year in the 2011)
– Electronic Service: 8-7 months in the 2010 and 2011
– Napoli is now (2010) designing the “up-to-date” LB system including: LVDS
suppressor, LV regulators and new FPGA configuration.
– First design almost ready (80%). Cost estimation ready
• LNF is looking at the test and commissioning of the system
– L.Benussi, L.Passamonti (Tech.), D.Pierluigi (Tech.) and Electronic Service: 3-4 months
in 2011
• Warsaw is in charge for the test, commissioning and installation of the system
• Warsaw is the only group having the full expertise of the link board hardware and
firmware system
• The participation of new groups at the LB project has been strongly
recommended by the CMS management
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Preliminary schedule
2011
J F
M A M J
J A
2012
S
O N D J F M A M J
J A
S O N
LB prototype
LB test
CB
prototype
CB test
Lbox
production
Test 904
 Prototypes test at CERN:
 Test at CERN (blg 904):
 Installation:
 Commissioning:
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1 tech + 1 phys for 3 months (2011) + Warsaw
1 tech + 1 phys for 6 months (2012) + Warsaw
2 tech + 1 phys for 6 months (2013) + Warsaw
1 phys for 3-4 months (2013) + Warsaw
Installation and commissioning in the 20139
P. Paolucci (Napoli)
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T/H sensors
 Sensors for T and H monitoring in RE4 new endcap stations and for existing
stations RE2 and RE3 (in collaboration with LNF, Napoli and CERN)
•Expertise on FBG sensors in HEP detectors (FINUDA, BTEV, CMS) and
industrial applications
• S.Bianco, M.Caponero, S.Colafranceschi (dott.), G.Breglio NA, S.Buontempo,
L.Passamonti (tech), D.Pierluigi (tech), M. Giordano (ric) e A. Cusano (ric)
• Explore possibility of using optical sensors for gas contaminants (PRIN
funded) F.Felli, M.Parvis, G.Saviano
•RESOURCES
• Clean room in Frascati for sensors assembly and QA/QC
• Lab space in Frascati
• Use of lab facilities in Napoli, Ing. Roma1, Polito
•
Total core budget PRELIMINARY
• Frascati + Napoli 75 k€
• CERN 45k€
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Cost and manpower
CERN
700
China
Belgiu
m
500
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800
India
800
Italy
600
Pakista
Korea
n
Egypt
400
P. Paolucci (Napoli)
210
Total
4210KSF
200
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Conclusions
1.
2.
3.
4.
Bakelite test – Pavia lab.
Chamber and single gap test and commissioning – Bari
Electronic production supervision – Bari/Napoli
Link board system (360 K€) – Napoli, LNF and Warsaw
–
Final and formal agreement with Poland still not ready
5. T/H sensors (75 K€) – Napoli (centro di competenza con CNR ed Univ.
del Sannio), LNF
6. Project has been already discussed in CMS Italy and in the
Italian Institution.
I.N.F.N. foreseen contribution is 600/4200 KCHF
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T,H Sensors for RE2,3,4 RPC chambers
Frascati, Napoli, CERN
•
•
•
•
•
•
•
Temperature (T) and relative humidity (H) are parameters that affect
the response of RPC detectors.
Typical requested precisions are +-0.2oC for temperature monitoring
and +-2% for H monitoring.
Optical sensors based on the Fiber Bragg Grating (FBG) are
 radiation hard; insensitive to magnetic field; precise; no electrical
noise;
 ease of installation; minimal cabling; precise.
Each new RE4 ,and existing RE2 and RE3 chamber will be equipped
with one FBG sensor for T measurement.
H monitoring will be performed via conventional electronic sensors.
An R&D is in progress to develop optical sensors for HF detection in
the RPC gas mixture.
Bibliography
1.
2.
3.
4.
RPC Upscope Technical Design Report
L.Benussi et al., ``The Omega-Like: A Novel Device Using Fbg Sensors To Position Vertex Detectors With Micrometric
Precision,'' Nucl. Phys. Proc. Suppl. 172 (2007) 263; M.Caponero et al., Optical sensors at INFN Frascati for CMS:
past, present and future , CMS Upgrade week April 28 2010.
A. Laudati, G. Parente, G. Lanza, A. Cusano, A. Cutolo, M. Giordano, S. Balzarini, "A New Hydrophone Based on Fiber
Bragg Grating Sensor", PHOTONICA Exp. 2008, 26-27 November 2008, Milano, Italy ; A. Laudati, G. Parente, G. Lanza,
A. Cutolo, A. Cusano, G. Breglio, M. Giordano, A. Antonelli, G. Bocchetti, "Railway Monitoring and Train Tracking by
Fiber Bragg Grating Sensors: A Case Study in Italy", FIRST MEDITERRANEAN PHOTONICS CONFERENCE 25-28 June
2008, Ischia, Italy.
N.Beni, S4CMS: A combined monitoring of sensors in CMS experimental site, presented at Siena 2010.
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