CMS L1 Muon Trigger Upgrade

1. CMS L1 Muon Trigger Upgrade Victor Golovtsov PNPI

2. CMS L1 Muon Trigger Project. PNPI activity 1 Track Finder Crate 60 Peripheral Crates 468 CSCChambers Local Tracks Track Segments 4 MuonTracks to L1 GT 6064 Copper Cables ~ 1 TB/s 160 Optical Cables ~ 50 GB/s 4 SCSI-II Cables ~ 600 MB/s CMU/ PNPI : Anode front-end electronics (AD16 boards) 160 000 channels CMS L1 Trigger Block Diagram UCLA/ PNPI : Anode local charge track electronics (ALCT 288, ALCT384, ALCT672 boards) Muon pattern-finder logic for local track One board per chamber UF/ PNPI : CSC Track Finder (12 Sector Processor (SP) boards) One board per 60 degree sector Each SP indentifies 3 best muon tracks in 60-degree azimuthal sector and measures the transfer momentum Pt

3. CMS L1 Trigger Upgrade • Reasons: • LHCluminosity increase to 2·1034cm-2s-1 • with the value of pile-up increase up to~ 50 • Expected increase in intensity on L1 trigger input to ~ 6 times • Consequences to use: • Standardization and flexibility of the technological support • Modern FPGA allows applying complex reconfigurable algorithms • and high-speed serial input-output links • Modern high-speed optical communication channels

4. Basic platformof L1 Upgrade A basic platform for CMS upgrade is Micro TCA ( Micro Telecommunications Computing Architecture) developed by PICMG (PCI Industrial Computer Manufactures Group), cоnsisting of 227 companies (87 executive and 140 associated) The initial goal of PICMG was to expand the PCIstandard Currently – development and implementation of guidelines for computer architectures. Including - Advanced TCA, Advanced MC, Micro TCA, COM Express, Compact PCI specifications MicroTCAdescribes the modular design of the systems and requirements for AdvancedМezzanineСards (AMC), the overall mechanical properties, form factors of motherboards, power supply, input-output modules, cooling facilities, as well as control features of Micro TCA-Systems

5. MicroTCA Crate Infrastructure Вased on Vadatech VT892 7U crate,providing 6 2Wslots АМС Mezzanine Board АМС Мodule2W Vadatech VT892 Crate Various types of back planes convenient for users can be applied. The version of a back plane of VT892-123-000-000 is accepted for CMS. Custom-made version of VT894 board can be used for additional connections Crate is equipped with Carrier Hubs (MCHs) ports, Power Modules (PM), and Cooling Units (CUs). MCH ports are applicable for users of commercial standards (GbE, PCIe, SRIO and SAS/SATA) One of slots with its MCH-ports is specified to be used for distribution of frequency, trigger signals, data acquisition, connections providing by the custom-made mezzanine board

6. CMS – Micro TCA Crate Ethernet Fiber Links from Detector Fiber Links from Detector 12 AMC Slots Commercial MCH Management Ethernet Power Power AMC13: Clocks, Fast Control, DAQ Fiber Links to Trigger Fiber Links to Trigger AMC13 – custom-made module providing ТТС- signals and TTS &DAQ connection AMC13 should be set in the second slot and equipped by the back panel board to provide communication "point-to-point" to each of 12 AMC slots AMC13 doesn’t use TTCrx ASIC, it is based on ADN2814 chip,providing the restoration of frequency of 160 МHzand TTC data flow of 80 МB/s AMC13 provides a delay of the trigger signal (Level 1) and readout pipeline (Level 2) with rate of 5 Gb/s

7. Sestor Processor Preproduction MTF7 Custom Panel 30 mm long CMS CR -2013/383 (12 Nov 2013) The CMS Modular Track Finder Board MTF7 University of Florida, Rice University Logic Module Mezzanine Board Back Plane Connector Optical Module Оptical Connectors Logic Module containsVirtex-7 XC7VX690T FPGA: 80 GTH-Transceiversup to 13 Gb/s, 1М Logic Cells, 3600 DSP Slices etc LUTon the mezzanine board with address space of 30 bits • Optical module: • 7 12-channel optical receiversAvago AFBR-820BEZ • 3 12- channel optical transmitters Avago AFBR-810BEZ • In total 86 optical inputs and 28 optical outputs with the rate of up to 10 Gb/s

8. CMS L1 Trigger Upgrade Strategy Original Muon Trigger Upgrade MuonTrigger Upgrade MuonTrigger , 1 Sector The main task is reduction of intensity of L1 trigger without essential loss of efficiency. The philosophy of the original trigger has some redundancy : three independent muon systems are associated at the level of the global trigger The upgrade trigger has the association at the level of track finding to provide a quality selection of tracks for the information of all three systems . Separate Track Finder for a zone of overlapping between endcup and barrel (Overlap) is entered. This is PNPI responsibility

9. Muon Overlap Track Finder Overlap region: 0.8 < /η/ < 1.25 The data of the three systems are implemented for the trigger decision: CSC, DT, RPC. L1 Trigger Upgrade : Muon Overlap Track Finder Cost BookPNPI– 312 KCHF (Equipment Only) CERN Cost Book 2014 – 2015: Test station creation and preproduction stage : Crate VT892 + Infrastructure - 53 KCHF Test Stand - 20 KCHF Construction of 3 MTF7 prototypes - 63 KCHF In total : 136 KCHF Financial Project 2014 - 14 MRb 2015 - 16 MRb In Total : 30 MRb 2015 – 2016: Production stage : Production of 10 MTF7 modules - 176KCHF 2016- 2 MRb In Total: 312 KCHF In Total: 32 MRb