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LED notched fibre distributing system QMB1 single LED slice

Ivo Pol á k, on behalf prague’s group polaki@fzu.cz QMB1 specifications QMB1 with Toroidal inductor at PCB Trigger distribution Notched fibre light distribution systems 3x24 Resume. LED notched fibre distributing system QMB1 single LED slice. QMB1. Q uasi resonant M ain B oard

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LED notched fibre distributing system QMB1 single LED slice

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  1. Ivo Polák, on behalf prague’s group polaki@fzu.cz QMB1 specifications QMB1 with Toroidal inductor at PCB Trigger distribution Notched fibre light distribution systems 3x24 Resume LED notched fibre distributing systemQMB1 single LED slice Ivo Polák, FZU, Prague

  2. QMB1 • Quasi resonant Main Board • Modular system, 1 LED per board • Operation mode: • DAQ + CANbus control • stand-alone mode • LVDS Trigger distribution system • Variable amplitude, zero to maximum (~1Amp) smooth • Pulse width fixed to ~ 5ns (UV or blue LED) • Voltages and temperature monitoring • Size of PCB: width 30mm, depth 140mm Ivo Polák, FZU, Prague

  3. Principal schema Larger inductor than the older QMB6 Ivo Polák, FZU, Prague

  4. Signal distribution at 30 x 140 mm^2 Two flat cables, Twisted pair for Trigger Ivo Polák, FZU, Prague

  5. TRIGGER (T-calib) LVDS distribution to QMB1 master slave slave slave slave TX RX Terminated 120ohm Terminated 120ohm LVDS Up to 6 + 6 slaves modules Trigger from DAQ Ivo Polák, FZU, Prague

  6. 3D draw of QMB1 T-calib LVDS flat cable LED PWR 15V and CANbus fibre Ivo Polák, FZU, Prague

  7. Mechanical layout of QMB1 LED Outer line: 30 (29) x 140 mm*2 4 mounting holes for M2.5 screw Ivo Polák, FZU, Prague

  8. DESY test setup in November HBU2 SPIROC2 Notched fibres Single layer frame PWR 15V DIF, PWR, CAL QMB1 QMB1 QMB1 QMB1 combiner CANbus T-calib from DAQ Ivo Polák, FZU, Prague

  9. QMB1 (1-chanel LED driver): Done Topology, PCB design Communicating bus (CAN) CPU (Atmel AVR) Trigger distribution (LVDS) Trigger delay canbe tuned by C trimmer (~10ns) 4 mounting holes for screw M2.5 Fibre(LED) position set to center of PCB PCB in production + assembly To be done Debugging in October/beginning of Nov Set of notched fibers, semiautomat machine under development Set: 3*fibre with 24 notches, creating a line of 72 notches. 3 sets will be delivered in November work at 2011 2010 Idea Ivo Polák, FZU, Prague

  10. Notches at one long fibre (24notches total) LED side Notch # 4 Notch # 24 last one, biggest Light coupled from tap Taken on microscope with zoom ~50 Ivo Polák, FZU, Prague

  11. Notched fibres illuminated by Green laser 24 notches • external company Safibra preparing the setup (semiautomat) to produce precise notches in the fibres • We will have prototype fibres made by new technology in November, we assume less spread of the light at taps (<15% ). • as backup, we have old 3 + 1 fibres (12 notches, spread <10%) in hand for November test with HBU at DESY Ivo Polák, FZU, Prague

  12. Resume • QMB1 is in production stage • First 4 samples promised in October • Coupling to fibre to be defined • QMB1 in hand with fw - expected in autumn • 3 sets of Notched fibres scheduled to be delivered in November • semiautomatic machine is under development Ivo Polák, FZU, Prague

  13. Distribution of light:Notched Fiber Iluminated by Green laser 24 notches • Light is emitted from the notches • The notchis a special scratch to the fiber, which reflects the light to the opposite direction • The size of the notch varies from the beginning to the end of the fiber to maintain homogeneity of the light, which comes from notches Emission from the fiber (side view) First notch Middle notch End position notch Ivo Polák, FZU, Prague

  14. Notched fibre illuminated by green laser pointer Ivo Polák, FZU, Prague

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