Pierluigi Paolucci & Giovanni Polese RPC Detector Control System Pierluigi Paolucci & Giovanni Polese I.N.F.N. of Naples cms.na.infn.it 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

RPC DCS schema Central DCS Central RCMS sub-detector controller condition DB Detector Local XDAQ Local DCS USC55 Detector 720 ch 60 A3009 20 EASY LV can-bus 4680 FECs 800 Link Boards 60 Crates optical fiber 480 ch 30 distrib. 80 A3512 12 EASY gas FEC LV HV can-bus cooling 300 sensors 10 ADC A3801 LV T can-bus rack config DB treshold/width setpoints

P. Paolucci & G. Polese - INFN di Napoli RPC DCS structure Muon DCS RPC Barrel DT CSC RPC Endcap Wheel +2 Wheel +2 Wheel +2 Wheel +2 Wheel +2 HV LV T gas cool rack FEC ext. DCS nodes XDAQ EASY system Local DAC node with 5 partitions one per wheel 12 crates 80 boards 480 ch. 20 crates 60 boards 720 ch. 300 sensors 10 ADC About 5000 FEBs 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

RPC DCS hardware status HV-LV-ADC EASY system final prototype  Nov. 04 high voltage board: A3512 low voltage board: A3009 ADC board: A3801 (T sensor) Two days test with CAEN people in Naples (22-23 Nov) End of the hardware production for Dec 2005 Hardware test is under design (CERN or Naples ??) Cables, connectors and HV distributors have been ordered in the 2004 HV patch panel will be produced in the 2005 T sensors installed on the chambers 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

RPC DCS software requirements Our first requirement is to have a DCS system able to work during the data tacking, calibration and commissioning. Define a certain number of CMS “state”: runnable: HV (ON && working point) && LV (ON) && GAS (OK) && No alarms safe to inject: HV (ON && safe point) && LV (ON) && GAS (OK) && No alarms off: HV (OFF) && LV (OFF) && GAS (OK) && No alarms calibration: HV (ON) && LV (ON) && GAS (OK) && No alarms Run wheels/sectors independently (partitioning) Mask “bad” channels or chambers in order to exclude them in the “state calculation”; HV problems  sparking or high current chambers LV problems  “bad” FEB or chamber OFF Electronic Calibration provided by the XDAQ RPC calibration (plateau curves & working point) 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

RPC DCS software status RPC muon System for DCS is developed in the form of a hierarchy where every object is represented as a node of the tree, following CMS structure. Its architecture has been developed using the framework components. All the panel actions have been developed with custom scripts. Naming and color framework conventions are respected !! All structures have been tested using in the first time an ad hoc simulator and then the SY1527 Power Supply . Alarm conditions on HV and LV devices have been set and each channel has a summary alarm, propagates up in the tree. PVSS version 3.0 and Framework release 2.0.9 PVSS archiving has been used waiting for the framework interface with Oracle 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

P. Paolucci & G. Polese - INFN di Napoli RPC FSM structure Each single element of the structure is view as a node of a state machine, build as a hierarchical tree. The states machine is not yes defined but the structure is ready and it will implemented as soon as possible 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

P. Paolucci & G. Polese - INFN di Napoli Main RPC DCS panel The RPC panel is under construction and it will include some sub-panel to set values for the whole RPC system; The status of the RPC node is also our top level status; From here you can access to the Wheel node (panel). Custom Alarm Panel with 5 Imon ranges related to the I0set 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

P. Paolucci & G. Polese - INFN di Napoli HV Wheel node The wheel panel contains info about the parent and the children nodes with the relative state condition. The status of every RPC is defined by the framework colors for the alarm status. Wheel name is an external variable All objects are clickable. The Set/Monitor panel provide the possibility to give a look at all the wheel channels. 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

Set/Monitor button Tab menu for select device type The most relevant parameters and the relative conditions are shown here. The status of each channel has been set with the relative color: OK, Tripped, Overcurrent,OverVoltage,UnderVoltage,RampUp,RampDown 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

P. Paolucci & G. Polese - INFN di Napoli Wheel Global setting From the Global settings panel it is possible to set the values of all the channels of the wheel and switch ON-OFF them. 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

P. Paolucci & G. Polese - INFN di Napoli Channel Details Left Click Details panel shows all the variables of the selected channel, its position in the wheel, alarm conditions, the VMON/IMON history plots and allow to set every single parameters of this channel. 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

P. Paolucci & G. Polese - INFN di Napoli Sector Node The Sector node has 8 children (RPC chambers). Some parameters and the status of each RPC are shown here. 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

P. Paolucci & G. Polese - INFN di Napoli Chamber Node Summary alarm with possibility of masking whole chamber. Fully description of each RPC’s devices. Left Click on status box for mask/unmask each single element. Simple Info about temperature value and sensor status. 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

P. Paolucci & G. Polese - INFN di Napoli Devices (Leafs) Set and Confirm values for all channel parameters Possibility of mask/unmask and acknowledge each single parameter or all together Additional panel for switch the state of the channel and load settings from the hardware 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

P. Paolucci & G. Polese - INFN di Napoli To be Done Move to the EASY hardware system (next framework); Check script framework conventions; Define the alarm conditions of HW channels and how to propagate them to the upper node; Define the SM conditions and how to move from one to each other; Implement the same structure for LV & Temp; Develop the RPC (main) Node; Thing about the Archiving and the Mass configuration (next framework); Detector Calibration  see next 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

P. Paolucci & G. Polese - INFN di Napoli RPC calibration To calibrate the RPC detector we need: A certain number (“n”) of “short” physics runs with: RPC detectors at “n” different HV setpoints; Muon DT trigger; RPC data cannot be used to reconstruct the muon tracks. To do this we need a DCS RPC calibration system with: A PVSS panel where set the “n” HV setpoints for all the chambers; A PVSS script generating a summary status (HV && LV && Gas); DCS Send the summary status to the Run Control (OK  start run); Central Run Control communicates to the DCS when is ready for the next run (new HV setpoint) local DCS HV step status Ramp status Ready Central RC start run stop run DAQ Ready 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli

P. Paolucci & G. Polese - INFN di Napoli Conclusions A PVSS prototype is almost ready (dec 04) and is in test with a SY1527 (HV and LV boards) system; Next step is to move to the EASY system (HV, LV and ADC) that will be installed in Naples in November 04; New features (mass configuration, alarm and DB) will be available in the next framework release and will be included in the next version of the RPC DCS (march 2005); A Calibration system has to be developed and the idea has to be accepted by the CMS collaboration (use physics runs); The RPC DCS system has to be tested on a large system; The XDAQ part has to be developed as soon as possible. 5/6/2019 P. Paolucci & G. Polese - INFN di Napoli