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(BRIEF) VELO BEAM TEST REPORT

(BRIEF) VELO BEAM TEST REPORT. R. Mountain, J.C. Wang, M. Artuso, S, Blusk, S. Stone Syracuse University. & many others…. OUTLINE: GOALS SETUP, HARDWARE RESULTS (TO DATE) PLAN. (Part 1 - RM) (Part 2 - JC). BEAM TEST GOALS “ACDC2”. Assemble all components in beamzone

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(BRIEF) VELO BEAM TEST REPORT

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  1. (BRIEF)VELO BEAM TEST REPORT R. Mountain, J.C. Wang, M. Artuso, S, Blusk, S. Stone Syracuse University & many others… • OUTLINE: • GOALS • SETUP, HARDWARE • RESULTS (TO DATE) • PLAN (Part 1 - RM) (Part 2 - JC) R. Mountain & JC Wang, Syracuse University VELO Beam Test Update, 23 Aug 2006 -1-

  2. BEAM TEST GOALS “ACDC2” • Assemble all components in beamzone • Commission trigger counters and logic (plateau, align, timing, set thresholds) • Get DAQ functioning, with all links • Get ECS (slow control) systems functioning, with control software • Take calibration data sets (test pulse, grounding, S/N), check data integrity • Make basic studies with beam, including: • delay curves to optimize timing, operating point for Beetle chip (several parameters), S/N as function of applied HV, etc. • Take externally triggered data with three modules functioning (i.e., 6 planes), for several angles, NZS & ZS, with high statistics • Take data with a target and appropriate trigger to produce interactions • Push offline software until it is really working -- for monitoring, hit display, cluster algorithm, tracking, vertexing, etc. • If have time, go to Fête de Genève… R. Mountain & JC Wang, Syracuse University VELO Beam Test Update, 23 Aug 2006 -2-

  3. BEAM ZONE LAYOUT (1) BEAM ZONE LAYOUT H8 BEAMLINE A (PPE 138) 180 GeV/c p ~10 Mppp UPSTREAM TRIGGER COUNTERS VELO MODULES TO DAQ CRATE BEAM 60 M DATA CABLES DAQ ELECTRONICS DOWNSTREAM TRIGGER COUNTERS R. Mountain & JC Wang, Syracuse University VELO Beam Test Update, 23 Aug 2006 -3-

  4. BEAM ZONE LAYOUT (2) BEAM ZONE LAYOUT UPSTREAM VELO MODULES DAQ DNSTREAM R. Mountain & JC Wang, Syracuse University VELO Beam Test Update, 23 Aug 2006 -4-

  5. BEAM TEST SETUP BEAM TEST SETUP 60 M DATA CABLES (FINAL) TEST BOX (SU) REPEATER BOARDS FULL, WITH ECS, LV (FINAL) LONG KAPTONS (FINAL) BEAM LV PS ISEG HV (FINAL) ROTATING TABLE LV PS CUSTOM REPEATER MECHANICS & INTERCONNECTS R. Mountain & JC Wang, Syracuse University VELO Beam Test Update, 23 Aug 2006 -5-

  6. THREE MODULES INSTALLED THREE MODULES INSTALLED FIRST OPERATION ACTIVE QUADRANT (SPOKESMAN) BEAM MODULES 19 – 18 – 20 RFRFFR R. Mountain & JC Wang, Syracuse University VELO Beam Test Update, 23 Aug 2006 -6-

  7. DAQ & ECS DAQ CRATE VELO MODULE (two Hybrids) TTC ODIN pc1 (ALL ARE FINAL) CCPC 60 m ANALOG DATA CABLES TELL1 TTCrx Short KAPTONS Ethernet (data) Gb eth. CCPC Ethernet (control) REPEATER BOARD (one per Hybrid) 6 Control Board Buff Buff 20m TTCrx ECS LV pc2 Long KAPTONS SPECS BUS SPECS Buff Buff Silicon HV (ISEG Module) 64 Repeater Board LV Temperature Board Beetle Chip LV pc0 CAN BUS ELMB temperature interlock after Pawel Jalocha, Online Mtg, 30 May 2006 R. Mountain & JC Wang, Syracuse University VELO Beam Test Update, 23 Aug 2006 -7-

  8. BEETLE CHIP R. Mountain & JC Wang, Syracuse University VELO Beam Test Update, 23 Aug 2006 -8-

  9. A3 A1 B1 A2 B2 TRIGGER Trigger Scheme Only one of many possible schemes is shown. Used several different trigger logics during data-taking, including UP only, UP*DN, UP*(B1+B2) for interactions. TRIGGER = A3( (A1B2)  (A2B1) ) efficiency~60% Trigger Counters Counters were fabricated by SU 3.5 m separation UPSTRM DNSTRM R. Mountain & JC Wang, Syracuse University VELO Beam Test Update, 23 Aug 2006 -9-

  10. HARDWARE ISSUES Latch • Timing Curve • When is the event? Beetle front end is continually active, so it uses an analog pipeline. Must pick the correct 25 ns “time bucket” in which to find the event. • Make a delay curve • Searched for a few days until we found the signal above noise • Lastly make a fine scan to refine the effective peak position • Beetle Operating Point • Adjust peaking time, gain, noise, etc. by scanning vfp, vfs, ibuf, etc. • Cooling System • Worked reasonably well using forced N2 • Typical temps ~ 45-50 deg C 25 ns SGNL 132 133 134 CLK The Right One Late, ‘Spillover’ Early PIPE R. Mountain & JC Wang, Syracuse University VELO Beam Test Update, 23 Aug 2006 -10-

  11. ACCOMPLISHMENTS • First operation of more than one VELO module • Used many of the final design VELO components • Took a lot of data (most with six hybrids) • “Cured” a broken sensor R. Mountain & JC Wang, Syracuse University VELO Beam Test Update, 23 Aug 2006 -11-

  12. -JC- R. Mountain & JC Wang, Syracuse University VELO Beam Test Update, 23 Aug 2006 -12-

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