Network configuration at BTF

You can connect to the internal BTF network by using a cable labeled with "LAN BTF" and doing the standard DHCP. You will not have connectivity to the outside world.

If you connect to wireless (eduroam or INFN) you can get uplink, but you'll need to check that the computer knows to use the wireless to contact the outside world.

On Mac, you can go to Preferences -> Network and use the option list below the list of interfaces to select the WiFi as highest service priority w.r.t. ethernet.

On linux, this can be done by checking that the default gateway is the one of the wireless and not the one of the internal BTF network.

Mailing list for communication:

Plese subscribe (the list is open) and send all communications to

To subscribe you can simply go via, quick search (bottom left of the page) for cms-cef3-ecal, and then click on join the group


You can subscribe clicking on the imcp elog presented at this link, you can also activate automatic e-mail notification

List of participants


Francesca Addessa, Daniele Del Re, Giulia D'Imperio, Marcella Diemoz, Simone Gelli, Clara Jorda Lope, Paolo Meridiani, Massimo Nuccetelli, Giovanni Organtini, Riccardo Paramatti, Fabio Pellegrino, Luca Pernie, Shahram Rahatlou, Francesco Santanastasio

Milano Bicocca:

Luca Brianza, Raffaele Gerosa, Alessio Ghezzi, Claudio Gotti, Pietro Govoni, Marco Lucchini, Arabella Martelli, Badder Marzocchi, Simone Pigazzini, Tommaso Tabarelli De Fatis, Nicolo' Trevisan

Test beam program:

Available MCPs:

  • MCP Rome #1 & #2 have possibility to switch off photocatode. They are Buderk (BINP) with 2 plates (chevron config: first plate 10mum, second 7mum). Datasheet
  • MCP MIB #1, #2, #3, 2 of them have possibility to switch off photocatode. They are Buderk (BINP) with??. Datasheet...
  • MCP Planacon 85012 53x53mm active region, segmented anode 8x8 readout. Cathode can be switched off. 10mum plates. Datasheet

Instrumentation along the beamline:

  1. Trigger and multiplicity counters (scintillators)
  2. Beam hodoscope (8x8 mm)
  3. one/two Budker (BINP) MCPs in PMT configuration (active photocathode) for fast time reference
  4. configurable absorber from 1X0 to 15X0 (lead or copper)
  5. several MCPs in either i-MCP (inactive photocathode) or PMT configuration
  6. one/zero Budker (BINP) MCPs in PMT configuration (photocathode active) for fast time reference
  7. 5 high-bandwidth low noise amplifiers are available: 3 Mini-Circuits ZFL-1000LN+ 0.1-1000 MHz, 1 Mini-Circuits ZX60-33LN-S+ 50-3000 MHz, 1 Ortec 9306 1 GHz.
  • 2 low-pass filter 1000 MHz, some SMA attenuators if needed
  • We may consider using three chambers after the absorber, and just one for reference

Measurements priority list (after setup checks)

  1. Two HV scan on two MCPs for efficiency and time response to m.i.p.s
    • Config: first and last MCP in PMT-MCP at fixed HV in plateau; the two other MCPs (Photonis and Buderk) in A) PMT-MCP and B) i-MCP configuration; NO ABSORBER
    • Estimated time: ~ 1 day max (including spare): ~10000 triggers per run (~10 min at 25 Hz); at most 20 points per scan in step of 50 V up to about 2500 V (max on Planacon) ~ 20 runs x 2 config x 20 min
  2. Absorber scan at two HVs in the plateau region
    • Config: two PMT-MCPs for reference upstream of the absorber; the two other MCPs (Photonis and Buderk) in A) PMT-MCP and B) i-MCP configuration at fixed HV at two plateau points for mips, and with variable absorber (15 runs from 1X0 to 15X0)
    • Estimated time: ~ 2 days max (including spare) [10 min per run, but each change of configuration will require access to the beam area, as this will dominate the time, we may take more triggers per run]
  3. LED calibration (at any spare time)
  4. Runs with/without the absorber and with the oscilloscope at plateau HV (acquire 1 reference MCP, 1 test MCP (either in i-MCP or PMT-MCP and the front scintillator). Change the test MCP
  5. Cherenkov scan: resolution and efficiency scan in PMT-MCP configuration as a function of photoelectrons
    • Config: add in front of 2 PMT-MCPs pieces of plexiglass (4mm thick) from 1 to 4 to increase the number of Cherenkov photons produced. Use HV at plateau for all the MCPs. Better to be done in the configuration without the absorber. Repeat with the other 2
    • Estimated time: ~0.5 day [10 min per run, but each change of configuration will require access to the beam area, as this will dominate the time, we may take more triggers per run]
  6. Repeat 1. and 2.) with additional chambers *1-2 days)*
  7. If results from scans are good, we may try an HV scan in 'preshower config': one chamber in front of the absorber, one after 1 X0 and one after 3 X0.
  8. Not done: High intensity runs (increase intensity to 2,5,10 particles per bunch)
  9. Not done: Angular scan in iMCP configuration at plateau HV (change angle e.g for Planacon and 1 BINP MCP)
  10. Digitizer calibration: send with the pulser a burst of pulses to 2 channels simultaneously. Measure intrinsic precision of the digitiser. Possibly to be repeated in lab with more accurate pulser

Daily plan (preliminary):

LNF will start shutting down the machine on friday morning at 9:00
  • Monday setup and checks. Summary list of items
    • Mount and connect the dark box (use 100ns cables for hodoscope and scintillators available at the BTF, use 16ns cables for MCP connections)
    • Setup scintillators in front and at the back of the dark box
    • HV configuration (use HV crate and connections available @ BTF)
    • Position alignment (use previous reference position of CeF3 test beam)
    • Timing alignment (set gate width for ADC, delays for TDC and Digitizer trigger)
    • Connection of long cables to the BTF patch panel for monitoring in the control room with non remotable oscilloscope (e.g. external BTF trigger, gate from DAQ, signal from front scintillator)
    • Digitizer calibration (send signal with pulser, to allow further offline calibration of the digitizer inputs)
    • Preliminary LED calibration (to test that the DAQ is working)
  • Tuesday - HV scans
  • Wednesday - Absorber scans
  • Thursday - Finish absorber scan, Cherenkov scan & then 3 long runs (50k) with all chambers PC on, with all chambers PCoff and no absorber, with 3X0 absorber and PCoff.
  • Friday - NO BEAM AFTER 9:00 If time allows, run with oscilloscope with 3X0 and PCoff. Then LED calibration on all MCPs, then dismount the setup
  • Saturday - NO BEAM
  • Sunday - NO BEAM

Shift List

Analysis code & results

Analysis code

A github federation has been created to support the development of the analysis code and to share it among collaborators. Please send your github user to Paolo Meridiani to be added to the developer's list.

Download and start developing DQM code:

git clone

Download and start developing analysis code:

git clone
-- PaoloMeridiani - 15 May 2014
Topic attachments
I Attachment History Action Size Date Who Comment
PDFpdf Photonis_XP85012_Datasheet.pdf r1 manage 646.6 K 2014-05-19 - 06:39 PaoloMeridiani  
PDFpdf tds13109_13323.pdf r1 manage 47.8 K 2014-05-19 - 06:33 PaoloMeridiani  
Edit | Attach | Watch | Print version | History: r9 < r8 < r7 < r6 < r5 | Backlinks | Raw View | WYSIWYG | More topic actions
Topic revision: r9 - 2014-05-24 - PaoloMeridiani
    • Cern Search Icon Cern Search
    • TWiki Search Icon TWiki Search
    • Google Search Icon Google Search

    Sandbox All webs login

This site is powered by the TWiki collaboration platform Powered by PerlCopyright & 2008-2020 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
or Ideas, requests, problems regarding TWiki? use Discourse or Send feedback