Where is CEN? Jura Mountains Lake Geneva Geneve he Alps 29-Jan-07 Drew Baden 1
29-Jan-07 Drew Baden 2
Angels and Demons? CEN s very own X-33 space plane! 29-Jan-07 Drew Baden 3
LC 27km proton-proton ring at CEN euse the tunnel previously home for the LEP collider Dig new collision areas for new experiments ALAS & CMS All high p physics, hermetic, large, general purpose LCb & Alice Smaller in size and physics scope 29-Jan-07 Drew Baden 4
LC Layout 8 arcs + 8 straight sections 4 intersections have experiments CMS, Atlas, Alice, LCb 4 have instrumentation, beam dump, beam focusing, etc Betatron cleaning F & beam instrumentation Alice CMS Atlas Beam dump Momentum cleaning LCb Injection 29-Jan-07 Drew Baden 5
27km long bored deep underground tunnel Boring is more stable than cut/fill or blasted tunnels 3km are actually under the Jura mountains Diameter 4-6m Depth 50-175m depending on location 1.4 x 10 6 m 3 ~ (100m) 3 soil extracted to dig it LC/LEP unnel 29-Jan-07 Drew Baden 6
LC (cont) 29-Jan-07 Drew Baden 7
LC Progress 27Installation km of dipoles whew! in progress 29-Jan-07 Drew Baden 8
E beam = 7 ev, 2 countercirculating proton beams Bunched beam structure Crossing every 25ns Number of bunches 3654 1.1x10 11 particles/bunch LC Stats DC beam current.56amps Stored beam energy 350 MJoules Equivalent to ~100 kw-hrs Superconducting Nbi magnets @ 1.9K Dipole field 8.33 @ 7 ev full beam energy 29-Jan-07 Drew Baden 9
CMS (cont) 29-Jan-07 Drew Baden 10
ridas Overview CMS rigger: Emphasis is on bandwidth and commercial processors Level 1 3 μs latency inside L1 trigger 100 kz average L1 accept rate (1/400) 100 Gbyte/sec into Level 2 Baden is CAL Level 3 WBS Manager for ridas Front End CMS CAL CAL Data QIE Fibers rigger/daq Level 2/3 DAQ Level 1 rigger 29-Jan-07 Drew Baden 11
CAL Electronics Overview S-Link: 64 bits @ 25 Mz Level 1 IGGE rigger Primitives ack CPU S B S C L K D C C EAD-OU Crate 1 PC Interface 12 s 1 Clk board 2 DCC FON-END eadout Box analog optical signals from CAL (BX) On detector PD QIE QIE QIE QIE QIE QIE CCA CCA CCA GOL GOL FE MODULE 29-Jan-07 Drew Baden 12 C CEN ransmitter 40 bits @40 Mz Shield Wall 20 bits @ 80 Mz =1.6 Gbps FIBES
Principal Functions 1. eceive CAL data from front-ends Synchronize optical links Data validation and linearization Form trigger primitives and transmit to Level 1 at 40 Mz Pipeline data, wait for Level 1 accept Upon receiving L1A:» Zero suppress, format, & transmit raw data to the concentrator (no filtering)» ransmit all trigger primitives along with raw data» andle DAQ synchronization issues (if any) 2. Calibration processing and buffering of: adioactive source calibration data Laser/LED calibration data 3. Support a VME data spy monitoring Data: total of approximately 650 B/sec flowing through our boards!!! 29-Jan-07 Drew Baden 13
CAL rigger/eadout () Board Fiber Data LC Serial Optical Data Deserializers (8) Princeton Fanout Card (1/VME crate) CLK80 C X_BC0 X_CLK40 Crx Crystal ef Clk ecovered Clk 20 C 40 Clk PLL x2 All I/O on front panel Fiber digital data Copper output to L1 and DCC FPGA logic Fully programmable SLB SLB SLB SLB SLB C Broadcast PG Path SYS40 Clk SYS80 Clk Async Fifo XILINX SLB 29-Jan-07 Drew Baden 14
Card Production Version (ev 4) Dual-LC O-to-E VME 6 SLBs C mezzanine Deserializers Stiffeners Xilinx XC2V3000-4 29-Jan-07 Drew Baden 15
Firmware DAQ format evolving Maryland/Boston/Princeton collaboration op-level view: See http://cmsdoc.cern.ch/cms/cal/document/countingouse//design/ev4mainfpga.pdf 29-Jan-07 Drew Baden 16
LC Clocking LEP ring is sensitive to: Distortions in the large (27 km) circumference idal distortions Pressure from Lake Geneva eturn currents from DC trains running nearby LC F clock keeps 3564 buckets of protons circulating CMS must remain synchronous with this clock LEP was concerned about ΔE~few MeV, LC will be concerned with Δf ~ 25 ppm We have learned to handle this rain to Bellgarde EFFEC IDAL EFFECS LAKE Geneva EFFECS 29-Jan-07 Drew Baden 17
29-Jan-07 Drew Baden 18 iming Signal Distribution ack-to-ack CA 7 D C C F A N O U D C C F A N O U F A N O U F A N O U F A N O U rigger iming Control C Stream ( X_CLK ) CAL VME Crates ECAL iming is critical in a synchronous pipeline experiment!
Fanout board 2 operating modes: Global or Crate C fiber Crx 40Mz C Broadcast Clk80 G C QPLL can run stand-alone QPLL G 18 Outputs G X_CLK = 40Mz C Input from GLOBAL Fanout X_CLK = 40Mz EX 80Mz X_BC0 X_BC0 G C IN_BC0 EX_BC0 FPGA Delay 29-Jan-07 Drew Baden 19
Overall ridas Project Cost Contingency: Effort: 50% M&S: 75% Effort: Item Engineering Cost $802,669 Based on the uncertainty in the requirements, which will certainly change over time. M&S: echnician otal &D Production $138,684 $941,353 $ 218,100 $1,929,374 otal $2,147,474 Misc: $45,000 Grand otal $3,133,827 29-Jan-07 Drew Baden 20