1. PXD EVO 23.3.2010 Hans-Günther Moser MPI für Physik Meeting on Services and Power Supplies Aim: define the services chain form module to external racks

2. PXD EVO 23.3.2010 Hans-Günther Moser MPI für Physik IR Service routing PXD cabling route is independent with SVD Readout Cable and cooling pipe are sitting between shields. ~500mm from IP 16*16*3.14=804cm 2 Patch Panel

3. PXD EVO 23.3.2010 Hans-Günther Moser MPI für Physik Electronics inside lead box of QC2RP upperstream G.Varner Test of FPGA and opt. link at Belle outised IP

4. PXD EVO 23.3.2010 Hans-Günther Moser MPI für Physik Kapton Link (Hans Krüger) Length limited due to high frequency signal transmission (clock, IO) Simulations started Prototypes ordered: Recommendations: increase copper thickness to maximum (35µm) to reduce voltage drop in power lines Work on impedance matching to TWP/coax Could increase driving capacity of DHP (not the dominant power source)

5. PXD EVO 23.3.2010 Hans-Günther Moser MPI für Physik DHH design to DAQ to DHH Controller TU Munich (Igor Konorov): DHH proposal based on SODA (for PANDA) New: optical transmission of clock signals (low jitter) Schedule 1.Requirements and specification 09.2010 2.Prototype development03.2011 3.Test, debugging, final specification 01.2012 4.Final prototype03.2012 5.Final production09.2012 Ramon Llull (Barcelona) interested to work on opto components Radiation ?

6. PXD EVO 23.3.2010 Hans-Günther Moser MPI für Physik Low Voltage Supplies »DHH about 2m away, only location for regulators »Which voltages to regulated locally ? »Overvoltage protection »Possible regulator RHFL491A (15W, 3mm², 15 CHF/piece) »Availability? »Alternatives? »Power supply tests and need for overvoltage protection will be studied by »Kracow (Henryk Palka) and LMU Munich (Jochen Schieck)

7. PXD EVO 23.3.2010 Hans-Günther Moser MPI für Physik Grounding (Fernado Arteche) Solid local ground (beam pipe?) Mutipoint HF ground connections Be aware: there is no such a thing as a ground free PS

8. PXD EVO 23.3.2010 Hans-Günther Moser MPI für Physik PS and grounding Pablo Vazques Connection to SVD by cooling circuit?

9. PXD EVO 23.3.2010 Hans-Günther Moser MPI für Physik Services Chain Module (1/2) DHH Location Docks Clock generation Opto transmission Power Supply ATCA Trigger Kapton link ~ 20-40 cm Patch panel (inside shield) Impedance matching Overvoltage protection Thin cable (power) O(2m) Twisted pair/coax (HF) O(2m) Thick power cables d=20mm, l=30m Fibres l=30m Regulation? Radiation level?

10. PXD EVO 23.3.2010 Hans-Günther Moser MPI für Physik Tasks/Actions 1)Test HF properties of Kapton + impedance matching (Bonn) 2)Design prototype patch panel (Bonn?) 3)Test need of regulation and overvoltage protection (LMU, Kracow) 4)Ground connection to beam pipe (KEK) 5)Need of shielding between SVD/PXD (discuss during B2GM) 6)Irradiation tests of SODA/DHH components (TU) 7)Grounding studies and PS prototype (Santiago de Compostella) DHH -> TU Munich (with help of Ramon Llull)