-- BadderMarzocchi - 2016-09-07

MCP: ECAL timing upgrade

This page is a documentation of the testbeams aiming to MCP testing, performed at CERN (H2/H4/T9) and at the BTF, since the 2014 till today

June 2016 - T9

Main measurments:

  • HV scans on MiB -25mu stack in Bicocca's camerone with 5 GeV pions.
  • Timing long run on MiB -25mu stack in Bicocca's camerone with 5 GeV pions.
  • HV scans on MiB -10mu stack in Bicocca's camerone with 5 GeV pions.
  • Timing long run on MiB -10mu stack in Bicocca's camerone with 5 GeV pions.
  • Long run on MiB -10mu @ 2GeV: e- ~20%.
  • Long run on MiB -10mu @ 2GeV: e- ~20% with 3X0 lead absorber in front of MiB2.
  • Long run on MiB -10mu @ 1GeV: e- ~80% with 3X0 lead absorber in front of MiB2.
  • Long run on MiB -10mu @ 3.5GeV: e- ~10% with 3X0 lead absorber in front of MiB2.

Show Hide

  • HV scan with Bicocca's Camerone at T9 with 5 GeV pions.
  • Configuration inside the Camerone: 25mu (HVIN1), 10mu (HVIN2)
  • Configuration on the beam line: Cerenkov - Scint1 (6x6 cm2) - MiB2 - Scint2 (1x1 cm2) - Camerone (~2m from XDWC) - RM2 - Scint3
  • Stacks in camerone have been modified wrt BFT with 1k resistor on anode closing on ground inside the chamber to avoid reflections. MCP MID & MCP OUT in parallel between 25mu & 10mu with a resistor (100k?)
  • Using digitiser MIB group 1:

    ch0 -> MIB2
    ch1 -> 25mu
    ch2 -> 10mu
    ch3 -> RM2
    ch4 -> N/A
    ch5 -> N/A
    ch6 -> S3
    ch7 -> CHERENKOV

    • HV SCAN on MiB -25mu - HVMID=1000V
      Run HVIN1 (V) HVIN2 (V) HVMID (V) Events
      4521 2500 1000 1000 10.3k
      4522 2600 1000 1000 10.3k
      4523 2700 1000 1000 10.3k
      4524 2800 1000 1000 10.1k
      4525 2900 1000 1000 10.2k
      4526 3000 1000 1000 10.2k
      4527 3100 1000 1000 10.2k
      4528 3200 1000 1000 10.3k
      4529 3300 1000 1000 10.2k
      4530 3400 1000 1000 10.2k
      4531 3500 1000 1000 10.2k

    • HV SCAN on MiB -25mu 1300V - HVMID =1300V
      Run HVIN1 (V) HVIN2 (V) HVMID (V) Events
      4537 2800 1300 1300 9.8k (Small misplacement of S1)
      4538 2900 1300 1300 9.8k (Small misplacement of S1)
      4539 3000 1300 1300 10.1k (Small misplacement of S1)
      4540 3100 1300 1300 10k (Small misplacement of S1)

      4542 3200 1300 1300 13k
      4543 3300 1300 1300 13k
      4544 3400 1300 1300 10.2k
      4545 3500 1300 1300 10k
      4546 3600 1300 1300 10k
      4547 3700 1300 1300 3k (Restart DAQ in between)
      4552 3700 1300 1300 7k
      4553 3800 1300 1300 10k

    • Long run for TIMING on MiB -25mu
      Run HVIN1 (V) HVIN2 (V) HVMID (V) Events
      4532 3700 1200 1200 130.7k

  • New configuration: Added another scintillator (2x2) readout on digitizer ch5 on the table ~10cm before the 1x1 scintillator). S1 back to 6x6,

    ch0 -> MIB2
    ch1 -> 25mu
    ch2 -> 10mu
    ch3 -> RM2
    ch4 -> N/A
    ch5 -> S4
    ch6 -> S3
    ch7 -> CHERENKOV

    • HV SCAN MiB -25mu HVMID=1200V
      Run HVIN1 (V) HVIN2 (V) HVMID (V) Events
      4585 3500 1200 1200 13k
      4586 3600 1200 1200 10k
      4587 3700 1200 1200 12k
      4588 3400 1200 1200 10k
      4589 3300 1200 1200 10k
      4590 3200 1200 1200 10k

    • HV SCAN on MiB -10mu - HVMID=1000V
      Run HVIN1 (V) HVIN2 (V) HVMID (V) Events
      4562 1000 2600 1000 5K
      4563 1000 2700 1000 5K
      4564 1000 2800 1000 5K

    • HV scan MiB -10mu HVMID=1200V
      Run HVIN1 (V) HVIN2 (V) HVMID (V) Events
      4567 1200 2800 1200 10k
      4568 1200 2900 1200 10k
      4569 1200 3000 1200 13k
      4570 1200 3100 1200 13k
      4571 1200 3200 1200 10k
      4572 1200 3300 1200 10k
      4573 1200 3500 1200 10k (pressure stable @ 1.9E-5)
      4574 1200 3600 1200 19k (pressure stable @ 1.9E-5)
      4575 1200 3700 1200 13k (pressure stable @ 1.9E-5)

    • Long run for TIMING on MiB -10mu
      Run HVIN1 (V) HVIN2 (V) HVMID (V) Events
      4566 1200 3400 1200 178k

    • Continuing HV scan MiB -10mu HVMID=1000V
      Run HVIN1 (V) HVIN2 (V) HVMID (V) Events
      4576 1000 3500 1000 10k
      4577 1000 3400 1000 13k
      4578 1000 3300 1000 12k
      4579 1000 3200 1000 16k
      4580 1000 3100 1000 13k
      4581 1000 3000 1000 13k
      4582 1000 2900 1000 15k

  • Moving to lower energy to have an electrons enriched beam:

    • Long run @ 2GeV: e- ~20% of events
      Run HVIN1 (V) HVIN2 (V) HVMID (V) Events
      4594 1200 3400 1200 190k

  • Also preshower configuration: add 3X0 lead absorber in front of MiB2, add attenuation of factor x10 for 10mu:

    • Long run @ 2GeV: e- ~20% of events Run HVIN1 (V) HVIN2 (V) HVMID (V) Events
      4597 1200 3500 1200 307k

    • Long run @ 1GeV: e- ~80% of events
      Run HVIN1 (V) HVIN2 (V) HVMID (V) Events
      4598 1200 3500 1200 4.5k
      4599 1200 3500 1200 16k

    • Long run @ 3.5GeV: e- ~10% of events
      Run HVIN1 (V) HVIN2 (V) HVMID (V) Events
      4600 1200 3500 1200 80k

May/June 2016 - BTF

Main measurments:

Show Hide

  • Configuration on the beam line: Scint1 - MiB2 - BINPs - RM2
  • Start HV Scan with negative polarity on BINP MCPs ("Russian")
  • MCP configuration in the digitizer: BNP2 (1, 1) BNP3 (1, 2) BNP4 (1, 3), fixed positive HV-BINP2 = 3200 V, HV-BINP3 = 3200 V, HV-BINP4 = 3100 V, negatives HV:


    • Run HV-BINP2 (V) HV-BINP3 (V) HV-BINP4 (V) Events
      2328 200 400 400 19k
      2329 400 800 800 13k
      2330 500 900 900 14k
      2331 600 1000 1000 14k
      2332 700 1100 1100 23k
      2333 800 1200 1200 18k
      2334 900 1300 1300 5k (problems in LINAC, non beam, run stopped)
      2335 900 1300 1300 7k (problems in LINAC, non beam, run stopped)
      2336 900 1300 1300 26k (from spill 9-20 (11000 evts) positrons)
  • Changed positive HV-BINP2 = 3700 V, HV-BINP3 = 3700 V, HV-BINP4 = 3700 V:

    • Run HV-BINP2 (V) HV-BINP3 (V) HV-BINP4 (V) Events
      2338 OFF 1400 2400 13k (BINP2 discharging)
      2339 1400 1400 2400 9k
      2340 1400 1400 0 12k

  • Changed MCP configuration: BNP3 (1, 2) BNP4 (1, 3) BNP1 (1, 1), fixed positive HV-BINP3 = 3700 V, HV-BINP4 = 3700 V, HV-BINP1 = 3700 V, negatives HV:

    • Run HV-BINP3 (V) HV-BINP4 (V) HV-BINP1 (V) Events
      2341 1400 2400 2400 21k
      2342 1300 2300 2300 18k
      2343 1200 2200 2200 16k
      2344 1100 2100 2100 16k
      2345 1000 2000 2000 16k
      2346 900 1800 1800 16k
      2347 800 1600 1600 15k
      2348 700 1400 1400 16k
      2349 600 1200 1200 16k
      2350 500 1000 1000 16k
      2351 300 600 600 8k
  • Changed MCP configuration: BNP4 (1, 3) BNP1 (1, 1) BNP2 (1, 2), fixed positive HV-BINP4 = 3700 V, HV-BINP1= 3700 V, HV-BINP2 = 3700 V, negatives HV:

    • Run HV-BINP4 (V) HV-BINP1 (V) HV-BINP2 (V) Events
      2352 2400 2400 1400 16k
      2353 2300 2300 1300 17k
      2354 2200 2200 1200 17k
      2355 2100 2100 1100 16k
      2356 2000 2000 1000 16k
      2357 1900 1900 900 15k
      2358 1700 1700 800 16k
      2359 1500 1500 700 18k
      2360 1300 1300 600 16k
      2361 1100 1100 500 17k
      2362 600 600 300 11k
  • Changed MCP configuration: BNP1 (1, 1) BNP2 (1, 2) BNP3 (1, 3). fixed positive HV-BINP1 = 3700 V, HV-BINP2 = 3700 V, HV-BINP3 = 3700 V, negative HV-BINP3 set at 1400 or 1300 for timing measurements (no digitizer saturation):

    • By mistake MCP RM2 was not powered during the fallowing runs
    • Run HV-BINP1 (V) HV-BINP2 (V) HV-BINP3 (V) Events
      2363 2400 1400 1400 16k
      2364 2300 1300 1400 16k
      2365 2200 1200 1400 15k
      2366 2100 1100 1400 16k
      2367 2000 1000 1300 14k
      2368 1800 800 1300 15k
      2369 1600 600 1300 16k
      2370 1400 400 1300 15k
      2371 1200 200 1300 5k
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Topic revision: r4 - 2016-09-08 - BadderMarzocchi
 
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