Presentazione sul tema: "RPC Status Outline Barrel installation and commissioning status"— Transcript della presentazione:
1 RPC Status Outline Barrel installation and commissioning status Trigger installationFull system commissioning- Tower tests- Global runsGas issuesGas calibration systemHVDCS-DQMRichieste
2 Full system commissioning RPC hardware schemaFull system commissioningTrigger Boards in Trigger CratesSplitterPACGB&SorterOPTO rec. FPGA (x 6)RMBSortersGMTDAQDCCS-LinksData Concentrator CardTower rackLBBoxRBCUXC areaBarrel WheelUSC area
3 Installation All chamber installed except MB2 –MB3 sect 1-7 W-1, W-2 HV cabling replacement (due to wrong connectorization by firm) on going:W0, W-1 doneW-2 done by mid-JulyW+1, W+2 cables ready to be installed by Mid-JulyAccess for installation in August (5 weeks)All LinkBoxes installedYB+1, YB+2 Link boards and CBs, Easy crates and LV modules installed and cabledYB0 boards installation Mid-July.YB-1, YB-2, YE-1 - routing defined, all cables ready;
4 InstallationInstallation of Easy-crates and test of HV modules on-going in USC S1.HV multi-conductor cables (UXC-USC) installed and connectorized but W0 (Mid-July) Test done on W+1,W+2All UX- US fibers delivered, installation YB+ YE+ middle July.Ready for feet patch panel connections (HV cables /fibers) on W+1, W+2, W0.
5 Trigger hardware Trigger System production Tender for the TBs production: two companies, the test boards are being tested now,Components (incl. FPGAs) should be delivered by the beginning of AugustIn September TBs should be produced and assembledSorter Crate (full)Trigger Crate (full)DAQ & Control CrateRBC and TTURBCs boards ready to be installed (End July)The RPC Trigger Board to be used as TTU (Technical Trigger Unit) is almost ready under the hardware point of view. A first release of VHDL code implementing cosmic muon algorithm is ready to be uploaded and tested.Development of the software tasks started and requires some working weeks (Debug in July). Aim to use for triggering purpose in AugustYB0 – cables routings defined, (current status ???)YB-1, YB-2, YE-1 - routing defined, 90% of cables ready;YE+-3 - routing to be defined (current status ???)5
6 Commissioning 5 / 480 chambers Commissioning of the final gas distributor and gas flow equalization DoneSector Test –after installation test: strip connectivity and noise rate, current stability DoneW+2W+1W0W-1W-2Chamber replacement (gas leak or HV problem)12On-site major intervention (electronics board/connectors)5 / 480 chambersChamber tests after cabling:Test of all LV/DCS cables DoneTest after HV cable replacementongoing on W-, finish by Mid-JulyW-2, W End JulyW+1, W+2 during access window in August-SeptemberBy September all chamber on all Wheels would be tested with final cables(HV/LV/DCS cables).
7 Full system commissioning Test and commissioning from chamber to tower : Tower testCommissioning USC electronics: Trigger and DAQ electronicsInstallation and test of Software: DCS, DSS , central DAQ, TriggerCommissioning from chambers up to the Link Boards (1) and commissioning of the full DAQ/Trigger chain (2) are performed in parallel in order to be ready for the full system commissioning.Strong needed of detector/software/trigger expert on site in order to fulfill the tight commissioning schedule. Common efforts of Barrel and Forward communities in order to setup global commissioning procedures.
8 Tower testDetector performance test using the final RPC/trigger system. Readout of detector data via diagnostic readouts from LBs of one tower.Strip Connectivity TestFEB – LB Connectivity TestNoise rate as a function of HV and thresholdsDCS with final configuration able to handle full wheelDevelop Online XDAQ applicationPrepare check list and documentationBottle neck for the full wheel test:Gas flow limited (temporary gas line)Connections YBs to the USC services not done yet. Use temporary cableshttps://twiki.cern.ch/twiki/bin/view/CMS/RpcTowerTestsResults
9 Schedule Global run W+2, W+1, W0 complete commissioned by end-October All towers fully commissioned by Feb08W-1, W-2 cannot be commissioned on the surface due to lack of electronics on surface. More effort will be put on full system commissioning of YBs and YEs.W-1, W-2 tower test will start as soon as possible after lowering (aim to finish End-NovGlobal runFirst partecipation to the GR in July 07:W+2 (10+11 corresponding to trigger sector 9)RBCs-TTU test on W+1 in AugustW0 (sector 10+ sector 11) Global Run in SeptemberW+1 W+2 W0 ( sectors 10 + sector 11 in each wheel) OctoberW+1 W+2 W0 YE+ (Full wedge) November
10 Gas system statusAll racks (Mixer, Humidifier, Pump, Pre-distribution, Final distribution) installed and readyAnalysis systems: IR analyzer (binos) for iC4H10 to be installedRelative Humidity probe installed and readyPurifier I (molecular sieve): ready, but not commissioned (about 1 week work)Purifier II(Cu/Zn filters): installed in SGX5, but not commissioned ( ~ mid July)Pending issues:Flammable detection system not yet ready.Piping heating in the shaft foreseen in the this weeks
11 Closed loop system General remarks: There is no doubt that the RPC gas system is complex and it represents one of the key tools for the system operationAt the start up some learning period will be necessary to bring the system to a stable stateIn 2008 low luminosity and “presumably” short running periodWe have one year work to setup the system and understand operation conditionsCombined ATLAS CERN CMS effortKeep level of attention high, but no panic
12 Closed loop system Possible scenario: Four months run3 weeks out of four per monthsPossible scenario:Start with a 50% fresh mixture for the first month (study purification unit)Go to 30 % fresh mixtur2 for the second monthGo to 10 % fresh mixture for third and fourth monthTotal cost at 1 vol/3h: ~ 105 kCHF
13 Gas calibration Calibration system ready next week moved to CERN. In view of the positive opinion expressed by the INFN ATLAS-CMS review board, we have reiterated the request for a gas-chromatograph
14 Stato degli Ordini (gare 2003) HVStato degli Ordini (gare 2003)2 MAO sono stati già consegnati (W+2 wheel test)Schede HV sono ferme in attesta di risolvere il problema della deriva termicamodelloordinaticonsegnatimancantiSY15252A MACISTE31A3512N - HV804733BC A16767A CRATE34A3000FB - FAN14A3486S - MAO5A LV6057
15 HV Il problema della deriva termica Nel 2006 abbiamo riscontrato tutta una serie di problemi relativi alla lettura della corrente della schede di HV (A3513N)Da qualche giorno la CAEN è riuscita a riprodurre il problema nei suoi laboratori, lasciando le schede accese per una settimana, come da noi suggerito.Ora stanno lavorando alla risoluzione del problema che è sia di tipo software (sincronizzazione) che di tipo hardware (grounding)Entro fine luglio avremo una schema completo dei problemi e delle possibili soluzioni
16 DCS-DQMIl sistema dei DCS degli RPC è stato integrato in quello di CMS a fine giugno ed è attualmente in test a P5I 3 servers finanziati dall’INFN stanno lavorando senza problemi a P5G. Polese è il nuovo responsabile del sistemaI databases online sono in fase di test per quanto riguarda la parte relativa al rivelatoreTutti gli istogrammi già sviluppati per il MTCC sono stati integrati nella nuova struttura ad albero della GUI (IGUANA)E’ stato poi sviluppato un sistema di warning and alarmDefinizione di un set limitato di plot che possa dare una overview dell’intero sistema
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