1 / 10

30 th October 2012

Visit to CALICE ECAL testbeam (by Shinshu ) at DESY, 16 th – 19 th October 2012 Samir Arfaoui & Erik van der Kraaij. 30 th October 2012. Setup @ DESY. Scintllators :  45x5x2mm strips are used by the japanese

mandana-hestia
Download Presentation

30 th October 2012

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Visit to CALICE ECAL testbeam (by Shinshu) at DESY, 16th – 19th October 2012Samir Arfaoui &Erik van der Kraaij 30th October 2012

  2. Setup @ DESY Scintllators:  • 45x5x2mm strips are used by the japanese • they recycled them from a previous prototype tile and had the strips cut from it • no clear supplier for their scintillators Read-out: • Hammamatsu MPPC (model?) • Their layer has 144 tiles (36x4) with 4 HBU and 4 SPIROC2b chips.  • On top, 3 cards:  • DIF (LEMO for Spill signal, TTL signal,and Reset) • Calibration board (LED) • Data-out board with USB connector Erik van der Kraaij, CERN LCD

  3. Setup @ DESY Trigger • Self-trigger: when one tile has a hit over threshold, all the tiles on the same HBU (36 total) are read out. • Validation mode: a crossed scintillator pair in coincidence for external trigger, upstream of the prototype. If validation signal is sent within clock-cycle of self-trigger, data is flagged as validated • Helpful to get rid of noise self-triggers • Japanese team did not manage to operate in this mode Front-end: SPIROC2b • Seems to be a black box… • Memory: 16 events and 0.5-1s for read-out • Complex configuration (Labview programs by DESY people)not a good idea for early CERN lab setup… • Need expertise (LAL? DESY?) for initial setup/operation • Japanese team lacked it, slowed them down greatly Erik van der Kraaij, CERN LCD

  4. Setup @ DESY Came in this morning from Katsu • They managed to perform measurements at various positions in the shower Erik van der Kraaij, CERN LCD

  5. Setup @ CERN Need for CERN lab: • at least 3 scintillators: 2 for coincidence trigger to get rid of the noise and the one under test • collimated radioactive source • SiPM + decoupling circuit => Picoscope • Hamamatsu MPPCs from DESY (thank you) • 10 of them in Samir’s office (+ a couple of reflective foil sheets) • Black box with cooling (or at last temperature monitoring) and shielding Readout options (from Christian) • EasiRoc. High level of integration. 128+ channels. ADC, no TDC. Could be made available by Aachen. • SPIROC + testboard at OMEGA. Details still to clarify. • CAEN VME module (similar to Erika @ DESY). PreAmp, ADC, TDC. How to bias MPPCs? CERN pool? • Picoscope. 4 channels. Bias via Keithley. CERN pool? Erik van der Kraaij, CERN LCD

  6. More pictures on the strips Erik van der Kraaij, CERN LCD

  7. TeraScale Alliance testbox • For single channel Erik van der Kraaij, CERN LCD

  8. Decoupling • Multi-channel board Erik van der Kraaij, CERN LCD

  9. Readout by VME • Instead of picoscopes Erik van der Kraaij, CERN LCD

  10. Readout by VME • … Erik van der Kraaij, CERN LCD

More Related