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 4 th Phase II: |η| > 1.6 CNS novembre 20102P. Paolucci (Napoli)

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 In red the approved CNS novembre 20103P. Paolucci (Napoli)

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 (NPD- BARC) at Mumbai; and Panjab University at Chandigarh. CNS novembre 20104P. Paolucci (Napoli)

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 – 1 physicist + 2 technicians (0.3 FTE) Quality control of chamber production at CERN – 1 physicist + 2 technicians (0.3 FTE) Quality control of FEB production 1 engineer ( 0.2 FTE) CNS novembre 20105P. Paolucci (Napoli)

Off-chamber Electronics CNS novembre 20106P. Paolucci (Napoli)

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: – link board crates (3.000 euro each) 78 K – link boards (800/900 euro each) 124 K – control boards (900/1100 euro each) 29 K – cable and connectors 30 K – 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 CNS novembre 20107P. Paolucci (Napoli)

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 CNS novembre 20108P. Paolucci (Napoli)

Preliminary schedule JFMAMJJASONDJFMAMJJASOND LB prototype LB test CB prototype CB test Lbox production Test 904 CNS novembre 2010P. Paolucci (Napoli)9 Installation and commissioning in the 2013 Prototypes test at CERN:1 tech + 1 phys for 3 months (2011) + Warsaw Test at CERN (blg 904):1 tech + 1 phys for 6 months (2012) + Warsaw Installation:2 tech + 1 phys for 6 months (2013) + Warsaw Commissioning:1 phys for 3-4 months (2013) + Warsaw

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 CNS novembre P. Paolucci (Napoli)

Cost and manpower CERNChina Belgiu mIndiaItalyKorea Pakista nEgypt Total KSF CNS novembre P. Paolucci (Napoli)

Conclusions 1.Bakelite test – Pavia lab. 2.Chamber and single gap test and commissioning – Bari 3.Electronic production supervision – Bari/Napoli 4.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 CNS novembre P. Paolucci (Napoli)

CNS novembre 2010P. Paolucci (Napoli) 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 o C 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.RPC Upscope Technical Design Report 2.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 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, 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 June 2008, Ischia, Italy. 4.N.Beni, S4CMS: A combined monitoring of sensors in CMS experimental site, presented at Siena 2010.