C. Fernández Bedoya on behalf of DT Upgrade group

C. Fernández Bedoya June 28 th, PHASE 1 ( ) * Replacement of theta TRB (Trigger boards) * Relocation of Sector Collector from the cavern (UXC) to the counting room (USC) PHASE 1 following steps (not strictly tighten to LHC shutdowns): * Replacement of DTTF (DT Track Finder) * Redesign of the TSC boards (Sector Collector trigger) * Replacement of the ROS boards (Sector Collector read-out) PHASE 2 * Connection with the tracker in the Level-1 trigger system * Replacement of Minicrate electronics (aging…)

Present rumors… C. Fernández Bedoya May 6 th,

C. Fernández Bedoya June 28 th, R. Carlin

TRB installation testing: - One test stand during replacement seems enough (enough spare parts if something breaks) - Present plan is to perform the TRB replacement before the CuOF TRB Commissioning: - Power, clock and cooling are mandatory - Main concern could be availability of Minidaq - Revive software for reading from 1 DDU (internal VME memory): -DAQ software probably not too difficult (take advantage of 904 setup) -DQM status? - Offline software special requirements? * Plan is to replace all MB1s theta boards (access to all the wheels) * Discussions with Technical Coordination are starting * We could have some interference with HCAL plans regarding accessing the wheels * NEED A GOOD COORDINATION AND A CAREFUL (REALISTIC) PLANNING Assume replacement takes ~1 chamber/day => 12 days with full access to each wheel (Assume max 3 months full replacement 1 station) C. Fernández Bedoya June 28 th, * Irradiation campaign to be taken place late Q * Try to have the CuOF prototypes at that time to make a common effort

From Guido, yesterday:

C. Fernández Bedoya April 14 th,

TSB Board OPT.RS-485 CONV. CuOF_ROS6 CuOF_SC6 Power Supply pp No VME communication foreseen The VME and the TIM back planes are removed In the back plane of the crate: Custom bus for power supply from A3100 Custom bus for I 2 C OF output SC Crate now SC Crate next Sector Collector Crate 7/6/20168DT Upgrade meeting

LinearRegulator*** EqualizerLaserDriver+DAC * TemperatureLaserDiode I2C line MPO12-A MPO12-B MPO12-C 4 spare fibers I2C Cu ** 8 Cu cables Connection to 3.3 V custom bus * -GBLD has DAC with start up conditions - Commercial LD with DAC exists, to be verified which startup conditions can be loaded ** - The I2C control on a separate board in the same crate or switch inside mother board ? *** - Linear regulator mounted on the mother board, 1 each mezzanine Summary of CuOF components – working hypothesis 7/6/20169DT Upgrade meeting

* Need to set parameters for the lasers (Ibias and Imod). Plus some temperature to read * Agreed interface I2C inside the CuOF * External link could be something like CANbus * Baseline: avoid single points of failure at a granularity larger than a chamber (a mezzanine) * Architecture proposed by Padova: * DAC parameters stored locally in a flash (or FPGA) to load default parameters at start up * First step is to identify the devices radiation tolerant and power supply compatible Pending items: * Responsibilities about the CuOF crate and backplane * Production of DCS parts in USC? (HW and SW) C. Fernández Bedoya June 28 th, A proposal was received from Padova and discussions are on going

CuOF board CuOF mezz

Constrain the lateral movement when the cable connector is close to touch the springs RJ 45 connector springs lift up Usually can be recovered by touching them Painful in the real system due to the high integration Discussion on the RJ45 connectors - ROS (in motherboards) are more problematic than TSC (in mezzanines) - CuOF will be in the mezzanines - We are discussing proposal for possible solutions - Mock up will be needed when first prototypes arrive C. Fernández Bedoya June 28 th,

TRUNK CABLE 72 Fibre (6 Ribbons x12 fibre ) terminated with 6 MPO connectors on both ends. Advantages: Widely used standard commercial cables Many suppliers on the market. -(Costs) Short procurement time (~4 weeks ). –(Logistic) Minimal Optical Loss Budget. - (Link Quality) Disadvantages: Care during installation Reduced patch flexibility Broken Ribbon repair costs SC 12:1 MPO Trunk Cable 01/06/ DD --DT UPGRADE--UX-US Optical Fibre- DT Upgrade. UX-US Optical Fibre. Proposal with Trunk Cables 72 Fibre terminated by 6 MPO

* We have reviewed the details of the interconnection in view of: - LVDS input cables constrains - CuOF architecture - OFCu architecture (12 channels MPO receivers) * We have an agreement on a working layout to move forward with each of the parts * To decide the need or not of patch pannels to minimize manipulation of the MPO fibers connectors C. Fernández Bedoya June 28 th, ROS TSC

C. Fernández Bedoya June 28 th, TSC wheel view:

C. Fernández Bedoya June 28 th, ROS wheel view:

C. Fernández Bedoya June 28 th, Proposal from Bologna: * 3U crate with the OFCu to insure minimal skew among links * Mapping is compatible with 1 crate/wheel * Same module, 2 functionalities: MB1/2/3 and MB4s Casimiro Baldanza

TSC in USC (2.5 racks) 5 VME crates 12U OFCu 5 crates 3U Possible place S1D08 and S1D07 (some interference with DT-DSS)

C. Fernández Bedoya June 28 th, * TSC proposal is not compatible with ROS architecture (cannot fit the connectors in 3U boards) * For the ROS rear transition modules will be made * Similar (simplified) modules will be used in the back of the TSC to maintain the TSC-ROS link

C. Fernández Bedoya June 28 th, It has been a fruitful period of discussions regarding the SC relocation We have advanced in many fronts (mapping, slow control, OFCu definition, etc) Priority now to the end of the year: - produce prototypes - set up test stands - Define fibers purchasing - Clarify space in USC and latency Thanks to all the people involved, let´s keep up with the effort! List of (other) pending issues: - Pattern units - Review aging and radiation tolerance of chamber+Minicrate electronics - Move forward with the new TSC+DTTF design

New access control system: ACCESS REQUEST: " 904 MUON_L: CMS assembly and integration centre" - Magnus will preinstall the vme fibers (retrieve the 20 m ones from our kits) - They will probably take care of installing TTC fibers as well - We are missing: -PATTERN UNITS -SOFTWARE (installed by end Sep?)

REVIEW OF FAILURES/SPARES LIKELY IN OCTOBER OPERATION EFFECTIVENESS REVIEW ON JULY 12TH

25 June 22 nd, 2011C. Fernández Bedoya * Failure rate low (no failures for the MAOs in more than 2 years. HCAL has had 2 in 2011, and they only have 14 MAOs in total) * High number of interventions is always related with overheating of Anderson Power connectors: - Rate still very high further solutions being tested

26 June 22 nd, 2011C. Fernández Bedoya * Failure rate significantly high * Not so much a concern of number of spares but: - We are the only users of this modules - Failures seem not reproducible at CAEN and some times also at lab -Many repeated offenders… * Effort is being done at 904 to build a dedicated test stand that can reproduce the failures seen in the detector. What is the situation?... * Further discussions with CAEN should take place

27 June 22 nd, 2011C. Fernández Bedoya * Number of failures has significantly gone down (less power cycles?) * Spare number is adequate * It is just important that we get access to the chambers and Minicrates on a regular basis

28 June 22 nd, 2011C. Fernández Bedoya * Failure rate within reasonable * Number of spares adequate (aim to retrieve soon some of the ones in reparation) * Need TTCrq for the TIM (some issues with the phase of the TTC signals in TTCrq spares)

29 June 22 nd, 2011C. Fernández Bedoya For the rest of the parts that haven´t failed ever, the number of spares is adequate and always higher than 20%

Low impact modifications: compatible with present system and with possible future upgrades Present system Proposed upgrade C. Fernández Bedoya April 14 th, Motivation is not the physics performance but the fact that aging and other risks may jeopardize detector operation and contribute to an accelerated degradation -We believe is a necessary step to allow future upgrades -Make a “simple” 1 to 1 copper to OF conversion at UXC -Motivation is not the physics performance but the fact that aging and other risks may jeopardize detector operation and contribute to an accelerated degradation -We believe is a necessary step to allow future upgrades -Make a “simple” 1 to 1 copper to OF conversion at UXC

C. Fernández Bedoya May 6 th, PRESENT ARRANGEMENT - Responsibilities assigned according to previous know-how - Lack of manpower basically everywhere - In contact with other institutes that may be willing to participate CuOF in UXC: Torino with help from Padova for Slow Control Fibers layout and installation: Torino Integration in USC: Nobody at present OFCu in USC for RO: Madrid OFCu in USC for TSC: Bologna

C. Fernández Bedoya May 6 th, G. Mazza, G. Dellacasa, S. Masselli

C. Fernández Bedoya May 6 th,

C. Fernández Bedoya May 6 th, Options: -Blowing fibers from CERN -72 connector cable -144 connector cable 5000 €/cable (~300 k€) but large uncertainty in the fan-outs -Not yet an estimation -Fit the connectors in the cable chains? >500 kCHF? -No space for the patch pannels Schedule: -Fibers (and patch panels) should be purchased 6 months in advance -One fiber to test probably should be purchased before mid Installation time ? -End 2013 Commissioning

C. Fernández Bedoya April 18 th, Splitting ROS and TSC implies modification of the TIMBUS backplane (J3) 6021 Wiener * Got no answer regarding use of TSC data, but I think it would be good to keep it if possible (for commissioning of the system after changes (remember DCC will also be modified)) * The rear transition module could include another link for the TSC-ROS exchange: - 1 extra fiber/OFCu - 60 fibers to be routed from TSC to ROS location

C. Fernández Bedoya April 18 th, Ethernet cables: 8/board => 96/crate Input optical fibers From the back of the rack OFCu

C. Fernández Bedoya April 14 th, Q Prototype production Q1-Q Prototype validation Q Procurement parts Q Final board production Q Installation and commissioning -The pluggable 12-MTP receivers can be reused for new TSC and new ROS -An additional transmitter can be used in some rear transition modules to fan out the input signals to operate simultaneously old and new TSC/ROS SCHEDULE

Vertical torsion is the dangerous one No problems seen with lateral torsion Exercise done with a ROS board In the TSC usually less problems, I think because part of the vertical torsion is absorbed by the slightly less rigid LVDSRX mezzanine (as compared to the ROS motherboard) Critic line, if you are not aligned when you arrive here the springs will not accomodate in the cable comb Cable comb C. F. Bedoya June 22 nd, 2011

Springs lift up Usually can be recovered by touching them C. F. Bedoya June 22 nd, 2011

- 2 SC crates per wheel - Located in tower racks in UXC level 2 Near - 60 ROS and 60 TSC boards in the system (1 per sector) - Complex electronic system - Main elements: LINCO, TIM, ROS, TSC LINCO

C. Fernández Bedoya April 14 th, * Space available for routing the fibers is tight but existing * Passing of connectorized fiber imposes constrains on the fiber selection * Latency of trigger chain is also an important concern

In principle, there is enough space below the false floor in S1 USC to recover extra cable lengths (though it depends on the exact racks to be used). Main problem is to allocate the SC crates in S1: -10 SC crates 11U each -To minimize L1A latency, they should be close to DTTF racks (S1D01 and S2D02) -In DT racks at present there is only space to allocate 6 SC crates (and not very close to DTTF) C. Fernández Bedoya April 14 th,

C. Fernández Bedoya April 18 th, Just to start getting ideas… Example of a “home made” patch panel in USC which apparently houses 1440 fibers in 4U