G. Dissertori ETH Zürich ECAL ESR - DCS 1 ECAL Detector Control System G. Dissertori Electronics System Review, Oct 9, 2003 Status report Trigger/DAQ project  DCS CMS DCSECAL DCS

G. Dissertori ETH Zürich ECAL ESR - DCS 2 Outline u Overview u Temperature Safety System (TSS) u Precision Temperature Monitoring (PTM) u Humidity Monitoring (HM) u SM internal cabling and patch panel u Outside cabling u Quality assurance u Planning

G. Dissertori ETH Zürich ECAL ESR - DCS 3 Overview ECAL module crystal PCBs for VFE and FE cooling LV, HV Laser system Offline, DAQ Data Bases PVSS prec. temp. sensor Monitoring TSS temp. sensor Monitoring Safety, PLC interlock cooling, faults humidity sensor

G. Dissertori ETH Zürich ECAL ESR - DCS 4 Specification Document wwweth.cern.ch/dcs  Documents  ESR

G. Dissertori ETH Zürich ECAL ESR - DCS 5 Overview n general duties of DCS in ECAL u development, design, prototyping, testing, installation of environmental sensors u Alarms, monitoring, archiving of environmental parameters u ECAL safety system - hardware interlocks (LV/HV) u Interfaces : HV, LV, DAQ, Cooling, Laser, CMS DCS, CMS DSS. u set-up of overall control/monitoring software u Detectors : ECAL EB, EE, Preshower u 24h non-stop operation !! n not responsible for  set-up and control of front-end electronics u readout of sensors/slow control data related to front-end (via DCU) u however: this information should be exchanged via DAQ-DCS interface u Laser control : but there should be communication with DCS

G. Dissertori ETH Zürich ECAL ESR - DCS 6 Overview n Now focus on : u EB ( + EE) l Temperature Safety System - TSS l Precision Temperature Measurements - PTM l Humidity Measurements - HM

G. Dissertori ETH Zürich ECAL ESR - DCS 7 PC/PVSS – PTM, HM PLC – TSS PC/PVSS – PTM, HM PLC – TSS ECAL CMSbalcony Readout electronics Readout electronics Cavern UXC55 Counting room USC55 No electronics inside CMS ! (all electronics is accessible – at least during CMS shutdowns) Important :

G. Dissertori ETH Zürich ECAL ESR - DCS 8 TSS Temperature Safety System - TSS Belgrade group

G. Dissertori ETH Zürich ECAL ESR - DCS 9 Full system autonomy in all aspects; Independent, continuous temp. monitoring of the ECAL VFE + FE environment in both ECAL SM + Endcaps; Precision : 0.5 deg C Archiving of temp. data and system status information for analysis of system and detector performance; Reliable hardwired interlocks with ECAL HV and LV Power Supply systems; External Alarm Interfaces with ECAL Cooling system (and ECAL LV?), as well as interface with general CMS DSS + TCR (?); Prompt reaction on any external alarm or critical change of temperature inside the ECAL by issuing, in a proper time sequence, Warnings and Alarms to: 1. HV System Crates (hardwired interlocks), 2. LV System Crates (hardwired interlocks), 3. System Operator (soft PVSS Warnings and Alarms); Radiation tolerance in accordance with CMS radiation dose specifications; Maximum possible level of robustness, reliability, safety and maintainability; TSS : Requirements

G. Dissertori ETH Zürich ECAL ESR - DCS 10 Three interconnected system layers: TSS FE Layer Temperature conversion and channel multiplexing - TSS FE Layer, TSS PLC Layer Data acquisition, data processing and interlock generating - TSS PLC Layer, TSS Soft Layer System monitoring and system control - TSS Soft Layer; Several external interfaces to: ECAL Low Voltage, ECAL High Voltage and ECAL Cooling systems, CMS Detector Safety System (DSS), LHC Technical Control Room (TCR) (?). Schematic layout

G. Dissertori ETH Zürich ECAL ESR - DCS NTC 100 Ohms There are in total NTC 100 Ohms thermistors (BC components) positioned in pairs at each measurement point ( “Twin” sensors ). 2x twisted pair cable SCEM = SCEM = , 2x2x0.05mm2, PETP insulation outside diameter 2.9mm, PETP insulation TSS : Sensor Location 10-35m long 9xSTP cable sections SCEM = SCEM = – 9x2x0.008 mm2 outside diameter 7.2 mm, MA 18 P

G. Dissertori ETH Zürich ECAL ESR - DCS 12 TSS : Sensor Location

G. Dissertori ETH Zürich ECAL ESR - DCS 13 TSS : sensors

G. Dissertori ETH Zürich ECAL ESR - DCS 14 FE Electronic components Rad-tolerant Max4582:  TTL/CMOS compatible  Temperature Range  0°C - 70°C  On-resistance  150 Ohms at 5V  Off-leakage current  1nA at 25°C  Low Distortion  Low crosstalk NTC 100 Ohms Resistant Bridge Front-End ASIC: DMILL % spares ordered (with LHC cryo group) Bi-directional three-level programmable Internal Current Source (1μA, 10μA and 100μA), Differential Amplifier, gain = 50 (adjustable), input range: -50mV – 50mV, output range: 0 - 5V, Analog switches, 8 measurement modes of the chip, controlled by the Ck0, Ck1 and Ck2 bits, Removes ASIC voltage offsets, thermocouple effects, power supply and ambient temperature dependencies RBFE ASIC

G. Dissertori ETH Zürich ECAL ESR - DCS 15  TSS FE is modular system made of TSS Units as independent modules. All identical;  Each TSS unit has its own, independent and redundant power supply;  Each TSS unit provides redundant readout for four SM or one Endcap. There are 12 in total ( ) units needed for (EE+EHB+EHB+EE) There should be at least 3-5 spare TSS units (about spare entries in total);  TSS units can be interconnected in order to be controlled in parallel by the same PLC Control Signals --> possibility for parallel readout of several EB Super Modules and reduces the cabling between the Counting Room and the TSS Racks on the balconies; maximum reliability  Redundant architecture of the TSS readout unit : provide maximum reliability, so that, in the case of malfunction of any internal electronic components, the unit still works properly with minimum possible loss of temperature information from the inside of ECAL radiation tolerant  All the electronic components of TSS FE Units should be radiation tolerant in accordance with the CMS radiation doses specifications for UXC5. TSS FE Layer – FE Electronics

G. Dissertori ETH Zürich ECAL ESR - DCS 16 TSS FE Layer – FE Electronics Functional layout of TSS Unit in control of four ECAL Super Modules Reliability analysis (for 4 designs) This layout with 8 RBFEs/4SM has smallest prob. to loose large number of modules in case of component failure

G. Dissertori ETH Zürich ECAL ESR - DCS 17  Fuses - limit the current in primary and two redundant secondary circuits,  LED Indicators – the status of redundant internal power supply systems.  analog signals - from four ECAL SM or one Endcap, amplified analog signals - from RBFE ASICs to the TSS PLC AI modules,  digital input signals - to control RBFEs and MUXs inside the TSS Unit. Input from the TSS PLC or neighbouring TSS unit;  digital output - to transfer digital control signals to neighbouring TSS unit. TSS FE Layer – FE Electronics Layout of ECAL TSS interconnections

G. Dissertori ETH Zürich ECAL ESR - DCS 18  2 x S7 PS307 PLC 24V Power Supply module (External Batteries, UPS ?),  2 x S7 DP315-2 PLC CPU module (256KB, 0.3MIPS, software redundancy),  1 x S7 IT Communication module (Ethernet, MPI, DP and connection, firewall).  6 x S xAIx15bit modules (44 analog inputs, 0-5V, total a/d conversion time < 50ms)  ? x S xDI modules for ? alarms from ECAL LV and Cooling Systems,  ? x S xDO modules for 10-bit Control Signals for TSS FE Unit control and ? interlock signals for the ECAL HV and LV Siemens S7-300 Family PLC System for TSS: TSS : PLC Specifications

G. Dissertori ETH Zürich ECAL ESR - DCS 19 Interfaces TSS PLC-to-DSS/TCR Interface

G. Dissertori ETH Zürich ECAL ESR - DCS 20 TSS PLC-to-HV/LV/Cooling Interface: form compatible TTL and relay interlock signals for the ECAL HV and ECAL LV crates, based on raw interlock signals from the TSS PLC. accept interlock acknowledgment signals from ECAL HV and LV for the purpose of eventual interlock wire-break detection. accept, convert and transfer external TTL and relay alarm signals to the TSS PLC Interface

G. Dissertori ETH Zürich ECAL ESR - DCS 21 Tests with SM0 SM0

G. Dissertori ETH Zürich ECAL ESR - DCS 22 SM0: sensor location

G. Dissertori ETH Zürich ECAL ESR - DCS 23 SM0 : PLC

G. Dissertori ETH Zürich ECAL ESR - DCS 24 Tests with SM0 ECAL TSS (FE + Interface) PCBCalibration curve for one TSS sensor Noise dependence on RBFE position (ΔL ~ 40m) Noise distributions for 4 twisted pairs ~0.04°C ~0.025°C

G. Dissertori ETH Zürich ECAL ESR - DCS 25 Tests with SM0

G. Dissertori ETH Zürich ECAL ESR - DCS 26 Oscillations of temperature of the air inside and outside of the SM0 are correlated! Cooling problems ! Cooling water temp. too high -> TSS interlock ! -> LV off ! Cooling problem solved ! LV On ! Cooling problems ! LV On ! TSS interlock ! System performance satisfactory !!! Tests with SM0: Example

G. Dissertori ETH Zürich ECAL ESR - DCS 27 PTM Precision Temperature Monitoring - PTM S. Zelepoukine, IHEP Protvino and ETHZ

G. Dissertori ETH Zürich ECAL ESR - DCS 28 PTM n Requirements: u very high precision temp. monitoring : check stability of water cooling system, to stay within deg C. l no hardwired feedback to cooling, but software link possible u relative precision : 0.01 deg C u one sensor/module on thermal screen and grid u main water IN, main water OUT

G. Dissertori ETH Zürich ECAL ESR - DCS 29 PTM : Sensors n Thermistors (NTC) from Betatherm, 100k  u 10 / EB SM u 10 / EE quadrant u 20 reference sensors around CMS (accessible for calibration) u Note : We do not use the Betatherm aluminium housing u First order (100 sensors) placed u use our own calibration setup

G. Dissertori ETH Zürich ECAL ESR - DCS 30 Patch panel Patch panel Thermal screen Grid Sensor probes location inside SM: Probes of type 1 (N = 4 + 4)Probes of type 2 (N = 2) Number of probes (per SM): = 10 Each probe has its own signal cable – twisted pair M1M2M3M4 PTM : Sensor location

G. Dissertori ETH Zürich ECAL ESR - DCS 31 PTM : Sensor location (SM0) M3 probe M3 cable from M3 probe cables from M1 and M2 enter M3 via different windows Patch panel location

G. Dissertori ETH Zürich ECAL ESR - DCS 32 by F.Mossiere 10 mm 6 mm 16 mm 10 mm Material: aluminum alloy PTM

G. Dissertori ETH Zürich ECAL ESR - DCS mm St.steel; outer / inner dia = 4 / 3 mm by F.Mossiere PTM : immersion probes

G. Dissertori ETH Zürich ECAL ESR - DCS 34 n Surface probe – SM grid / thermal screen: u Construction: Aluminum piece (17 x 10 x 6 mm); to be fixed with 2x M2.5 screws on the grid or thermal screen surface. u Location: in the center of each module (grid / th.screen sides); n Immersion probe – SM IN/OUT cooling pipes: u Construction: St.steel tube (length = 55 mm; inner/outer dia = 3/4 mm); to be immersed into the cooling water flow. u Location: on the SM’s entry/exit cooling pipes PTM : sensor probes

G. Dissertori ETH Zürich ECAL ESR - DCS 35 Heat gun 80C Heat shrinkage sleeves (1.5 / 0.5) Stage 1 - isolation of sensor leads 1 2 Heat gun 80C ~ 1mm HS sleeve PTM : sensor probe assembly

G. Dissertori ETH Zürich ECAL ESR - DCS 36 Gap Filler M4 screw Stage 2 - mounting sensor into the probe 34 ~ 3mm HS sleeve Heat gun 80C Insert sensor into the probe; put a drop of Gap Filler. Close the hole with a screw M4; Put a protective HS sleeve on the outgoing wires. PTM : sensor probe assembly

G. Dissertori ETH Zürich ECAL ESR - DCS 37 Stage 3 - soldering signal cable (tw.pair) Solder sensor lead to the cable wire Protect with HS sleeves 5 Twisted pair (no shield, no jacket); length ~ 5m (4m min) 6 – put 2 markers with the unique sensor ID number: on the probe (top side) and on the cable about 0.5m from the end 100 PTM : sensor probe assembly

G. Dissertori ETH Zürich ECAL ESR - DCS 38 PTM : Readout - Layout ELMB Cur.src PC / PVSS ECAL UXC55 balcony: DCS racks Counting room 20x2 STP cables ( sections) CANbus cables (6x2 sections) ~ 500 sensors (NTC thermistor Betatherm; 25C; indiv.calibrated; better than 0.01C rel.accuracy) Readout electronics: ELMB based; ELMB reads voltages and converts to digital data, then sends data via CANbus. DC-DC converters DC Power supplies DC Power supplies Monitoring application: PVSS based; data storage/archiving, visualization/trending, warnings/alarms. Network access Galvanic isolation

G. Dissertori ETH Zürich ECAL ESR - DCS 39 PTM : Readout - Layout Vr Vs R ref (100K) RsRs I = 10 uA R s = (Vs / Vr) / R ref Sensor 25C) Current source ELMB T(K) = 1 / (A + B * Log(R) + C * Log 3 (R)) Vr = 1.0 V Vs = C Vr = I * R ref Vs = I * R s +5 V ADC

G. Dissertori ETH Zürich ECAL ESR - DCS 40 PTM : Readout - Layout Current sources board ELMB carrier board (2x redundant ELMBs) ELMB carrier board (2x redundant ELMBs) MUX board Sensor excitation I = 10 uA Sensor voltage drop (V = V) Ref.resistor voltage drop (1V) CANbus_1CANbus_2 Eurocrate 6U Sensor cabling Each 3-board assembly can support max 32 sensors ( = 3x EB SM)

G. Dissertori ETH Zürich ECAL ESR - DCS 41 PTM : Readout n Based on ATLAS ELMB (Embedded Local Monitor Board) u see

G. Dissertori ETH Zürich ECAL ESR - DCS 42 PTM : ELMB n Plug-on Board

G. Dissertori ETH Zürich ECAL ESR - DCS 43 PTM : ELMB Mother Board 40 ELMBs +6 MB bought

G. Dissertori ETH Zürich ECAL ESR - DCS 44 PTM : Tests with SM0 Prototype: Sensor, probes, locations, readout scheme as described before current sources ELMB for 100k NTC (Betatherm) ELMB for 10k NTC ELMB for humid. sensors

G. Dissertori ETH Zürich ECAL ESR - DCS 45 PTM : example measurement n PTM, SM0, weekend of : water OUT water IN on grid, module 4 precision =< 0.01 deg C !! LV OFF

G. Dissertori ETH Zürich ECAL ESR - DCS 46 Humidity Humidity Monitoring - HM S. Zelepoukine, IHEP Protvino and ETHZ

G. Dissertori ETH Zürich ECAL ESR - DCS 47 Humidity n Requirements: u monitor relative humidity level (RH) in a module l issue software warning in case of critical reading u precision required : 5 % (on RH)

G. Dissertori ETH Zürich ECAL ESR - DCS 48 HM : Sensors n UPS-600 from Ohmic Instruments Co. u 1 / Module, 4 / EB SM u 4 / EE quadrant u Ceramic resistive humidity sensor u irradiation tests at IRRAD-2 : stable up to barrel doses, EE doses ongoing u market survey and selection together with Tracker DCS

G. Dissertori ETH Zürich ECAL ESR - DCS 49 HM : Readout n Same scheme as for PTM, based on ELMB: u use ELMB u in addition : Transmitter from Ohmic Instruments  signal conditioning circuit, sine wave RC oscillator, 440 Hz  150 mV RMS  amplitude stabilizer, logarithmic amplifier, linearizer  output voltage directly to ELMB : 1V - 3 V  needs 5 V power supply  to be checked : radiation tolerance

G. Dissertori ETH Zürich ECAL ESR - DCS 50 HM : Readout - Layout ELMB transmitters PC / PVSS ECAL UXC55 balcony: DCS racks Counting room 4x2 STP cables ( sections) CANbus cables (6x2 sections) ~ 200 sensors (relative humidity, resistive type, 5% RH) Readout electronics: ELMB based; ELMB reads voltages and converts to digital data, then sends data via CANbus. DC-DC converters DC Power supplies DC Power supplies Monitoring application: PVSS based; data storage/archiving, visualization/trending, warnings/alarms. Network access Galvanic isolation

G. Dissertori ETH Zürich ECAL ESR - DCS 51 HM : Readout - Layout RsRs Sensor (RH - resistive) Transmitter ELMB V = V (0% - 90% RH) ~ 150 mV 440 Hz Logarithmic amplifier Oscillator; Freq --> DC +5 V R = 200M - 2K (0% - 90% RH) Log ADC

G. Dissertori ETH Zürich ECAL ESR - DCS 52 HM : Readout - Layout Transmitters board ELMB carrier board (2x redundant ELMBs) ELMB carrier board (2x redundant ELMBs) MUX board Sensor excitation (150 mV; 440 Hz) voltage signal ( V) CANbus_1CANbus_2 Eurocrate 6U Sensor cabling Each 3-board assembly can support max 64 sensors ( = 16x EB SM)

G. Dissertori ETH Zürich ECAL ESR - DCS 53 HM : Tests with SM0 u first time, testing two sensors (UPS 500 and 600, from Ohmic Instr), rad.hardness tested up to barrel levels u both sensors in M4 u readout scheme based on ELMB, together with transmitters on the rack u with SM0 : first tests, reading rel. humidity. Detailed data analysis to be awaited for after Serguei’s return

G. Dissertori ETH Zürich ECAL ESR - DCS 54 HM : Tests with SM0

G. Dissertori ETH Zürich ECAL ESR - DCS 55 HM : Tests with SM0

G. Dissertori ETH Zürich ECAL ESR - DCS 56 Cabling Cabling inside a SM / Quadrant S. Zelepoukine, IHEP Protvino and ETHZ

G. Dissertori ETH Zürich ECAL ESR - DCS 57 n A single twisted pair runs from each sensor to the patch panel. (After the patch panel two pairs, 4-wire connection, are foreseen for PTM) n Pairs count / cable length: u PTM pairs1.5 – 4 m u HM -- 4 pairs1.5 – 4 m u TSS -- 8 pairs1.5 – 4 m n Cable type – the same for all three applications: u Section 0.13 – 0.22 mm 2. u Rad.resistant insulation : For EB: PE ok; for EE : Kapton --> offer from Habia u for more details see talk by S. Zelepoukine, TCG, n Patch panel connectors : the same type for all three applications: u Rad.resistant insulation u Crimping contacts u Burndy Quickmate rectangular plastic connector; insulation/construction material is nylon (PA) Cabling Inside

G. Dissertori ETH Zürich ECAL ESR - DCS 58 Patch Panel Patch panel – EB SM / EE quadrant 24-pin18-pin12-pin Burndy Quickmate female Burndy Quickmate male 21x2 STP Dia= 11mm x2 STP Dia= 5.8mm PTMTSSHM 10 sensors (4-w) 8 sensors (2-w) 4 sensors (2-w) 9x2 STP Dia= 7.2mm

G. Dissertori ETH Zürich ECAL ESR - DCS 59 Connectors

G. Dissertori ETH Zürich ECAL ESR - DCS 60 Cabling Cabling outside a SM / Quadrant S. Zelepoukine, IHEP Protvino and ETHZ

G. Dissertori ETH Zürich ECAL ESR - DCS 61 n Cable lengths: u SM/Dee – balconies in UXC55: 27m for EB 25m for EE (according to W. Funk) u Balconies – counting room in USC55: 100 m n Radiation resistance – PE cables can safely be used. n Cable type – STP (shielded twisted pair); 0.09 – 0.13mm 2 n Grounding – cable shield grounding point ?? n Further details : see talk by S. Zelepoukine, TCG, Cabling

G. Dissertori ETH Zürich ECAL ESR - DCS 62 n from discussion with CMS integration group Counting room CMS Barrel Endcap Barrel Electronics Cabling

G. Dissertori ETH Zürich ECAL ESR - DCS 63 Rack location

G. Dissertori ETH Zürich ECAL ESR - DCS 64 QA / Testing Quality Assurance / Testing

G. Dissertori ETH Zürich ECAL ESR - DCS 65 QA / Testing n Sensors/ Installation u simple resistance measurements immediately after installation u full PTM, HM, TSS setups in Bld > test of the full readout chain n ELMB u rely on extensive work by ATLAS u will do standard checks on all ELMBs n RBFE u rely on extensive work by LHC cryogenics group u delivery early 2004: all chips will be tested by them u further checks by us on the TSS FE boards

G. Dissertori ETH Zürich ECAL ESR - DCS 66 Planning

G. Dissertori ETH Zürich ECAL ESR - DCS 67 rough indicators Sensor probes, cables, connectors inside SM/Dee are designed2003 (EB) (ECAL integration). later (EE/SE) Sensor probes, cables, connectors inside SM/Dee are produced.2003 (EB) later (EE/SE) ECAL (EB/EE/SE) module production – installation of sensors.2004 (EB) later (EE/SE) Electronics (sensor transducers) is developed and tested (Rad/Mag) Cabling and electronics location scheme outside EB/EE/SE 2003 is designed (CMS integration). Electronics (sensor transducers) production later (EE/SE) Cabling and electronics installation (underground cavern) Counting room – computers/electronics installation and testing. Overall system testing and comissioning.2005 Milestones (simplified) see also CMS DCS planning file

G. Dissertori ETH Zürich ECAL ESR - DCS 68 Conclusions n Hardware u already important milestones passed this year u several important orders placed already u sensor installation in SMs started u tests with SM0 encouraging u close to readiness for mass production n Software u important achievements this summer u will adapt to software changes this winter/next spring

G. Dissertori ETH Zürich ECAL ESR - DCS 69 PTM : sensor irradation n Together with tracker DCS : u Neutron irradiation at IRRAD-2 facility u during summer : Barrel dose reached u no change in behaviour observed u tests ongoing to go to EE levels

G. Dissertori ETH Zürich ECAL ESR - DCS 70 No. racks = 6 Applications: - precision temperature + humidity EB rack:9 x 10 = 90 ch. --> 2 ELMBs (prec.temp) 9 x 4 = 36 ch. --> 1 ELMB (humidity) EE rack:4 x 10 = 40 ch --> 1 ELMB (prec.temp) 4 x 4 = 16 ch --> 1 ELMB (humidity) sub-total: 4 x x 2 = 16 Redundant ELMB config. ==> 16 x 2 = 32 Total (incl. spares) = = If prec.temp and humidity can share ELMB: EB rack: = 126 ch --> 2 ELMBs EE rack: = 56 ch --> 1 ELMB sub-total: 4 x x 1 = 10 redundancy: 10 x 2 = 20 Total (incl.spares): = 28 --> PTM : ELMB ordering have bought : 40 ELMBs (+6 MB) as client to big order by ATLAS

G. Dissertori ETH Zürich ECAL ESR - DCS 71 Backup / Further Info , am

G. Dissertori ETH Zürich ECAL ESR - DCS 72 Backup / Further Info , am

G. Dissertori ETH Zürich ECAL ESR - DCS 73 PTM : example measurement n PTM, SM0, weekend of , on thermal screen: 24.8, afternoon

G. Dissertori ETH Zürich ECAL ESR - DCS 74 PTM : example measurement n PTM, SM0, weekend of , on grid: water IN, OUT and M4 M3 M , afternoon

G. Dissertori ETH Zürich ECAL ESR - DCS 75 PTM sensors probes Delta T = 1 K (plate – air) Delta T = 0.06 mK (sensor location) Finite Element Model : A.Riabov (IHEP, Protvino)

G. Dissertori ETH Zürich ECAL ESR - DCS 76 ETH Zurich IHEP Protvino VINCA Belgrade Project Leader: Guenther Dissertori (ETHZ) Deputy Leader: Serguei Zelepoukine (IHEP) Project mgt, procurements, software (PVSS), participation in elec.development (in a collab. with IHEP) Temperature/humidity monitoring, software (in a collab. with ETH) Safety system  interlocks software Teams: Project Organization

G. Dissertori ETH Zürich ECAL ESR - DCS 77  Part 1 – SM production  testing/calibration of sensor assemblies (sensor probe + cable)  installation of sensor assemblies in the detector (EB SM or EE Dee)  testing of all installed sensors n Part 2 – Installation in CMS  laying down cables outside ECAL (a centralized activity)  mounting connectors on the cables outside of the detector  testing/calibration of the off-detector electronics (ELMBs, TSS FE boards)  installation of the off-detector electronics  installation of the electronics and computers in the counting room  connecting everything, powering on and final testing/commissioning Planning

G. Dissertori ETH Zürich ECAL ESR - DCS 78 Backup / Further Info n Strain gauges u mostly for monitoring during installation u after installation: read out required? What frequency? u will be outside a SM n Radiation sensors u should be overall CMS task. Exact location? We should have access to these data n Hall probes (EE) u see radiation sensors n Smoke detectors u sniffer tubes inside SM. Sniffers to be installed by DSS group Other ECAL sensors