Mechanical beam test infrastructure Status of the DEPFET
Mechanical beam test infrastructure & Status of the DEPFET power supply J. Schneider / 12. 09. 2008 / DEPFET Meeting, Heidelberg
Agenda Mechanical beam test infrastructure: • new mounting table • new telescope positioning system DEPFET power supply: • why do we need the new power supply? • the advantages of a multi channel power supply • short summery of the design • status of the development progress • outlook with respect to the next generation of readout systems • which direction should the further development take?
Mechanical beam test infrastructure New mounting table: - board size: 1600 x 625 mm - max height: 1050 mm - standard mounting grooves - board is adjustable in height
Mechanical beam test infrastructure New telescope positioning system: 3. Positioning Software (win) 1. Mechanics 2. Controllers for 5 DEPFET modules provided by Bonn
Mechanical beam test infrastructure New telescope positioning system: phi - moving capability in x, y DEPFET Module DUT x DEPFET Module Beam DEPFET Module y Beam (phi for the DUT) - moving range: 100/150 mm (90° rotation for DUT) - positioning accuracy: 15µm / 2µm (DUT) - capability for mounting next generation of DEPFET module cases
Mechanical beam test infrastructure New telescope positioning system: it has proved itself in beam test 2008 very nice alignment results during the 2008 beam test The module overlap was maximized up to perfect alignment, for maximum track efficiency.
Mechanical beam test infrastructure Notice! • practicable mounting table • Telescope positioning system (5 Modules), including: – – motor stages mechanics controllers positioning software (win) … available for next beam tests …
DEPFET power supply Why do we need a compact multi channel power supply? up to 20 supply voltages are needed for operating a DEPFET system Problems with the „Classic“ setup: - bulky - high propability of false connections - high prop. for wrong power on sequence - EMI sensitive - no U / I monitoring for all supplies - expensive setup - pain to operate a multi-module DEPFET telescope (remember TB 2007) . . . to avoid this problems “Classic” DEPFET power supply Multi channel power supply in 15” case
DEPFET power supply “Classic” DEPFET power supply in beam test 2008 The advantages of a multi channel supply? • • one supply per module faster setup time, less cables no patch panel, no protection board any more standardized setup, no chance for fail connections safe power on sequence, (µC controlled) easy voltage and current monitoring or logfile remote access to voltage settings -> DUT voltage scans
DEPFET power supply Design summery of the multi channel power supply: Analog voltage lines Digital control bus, 24 V supply backplane Display & USB Interface switches & Microcontroller • Digital isolators Digital Quad channel isolators supply module Quad channel supply module Digital isolators Single channel supply module HV module Relay card D-Sub connector to DEPFET module 5 quad supply modules + 1 HV module – 21 supply voltages – each module has a floating ground • Controller – EEPROM storage of voltage settings – USB interface (local control optional) • Relay card – controlled switching of the voltage outputs Multi channel power supply in 15” case
DEPFET power supply Configurations of the quad supply card: Possible configurations of a quad supply channel: 0 bis +25 V 0 bis -25 V 0 bis +8, 125 V 0 bis -8, 125 V @ @ 0 - 25 m. A source/sink 0 bis +25 V 0 bis -25 V 0 bis +8, 125 V 0 bis -8, 125 V @ @ 0 - 300 m. A source • • the channel configuration is independent of the others even on the same card the total output current of one quad supply module is limited to 300 m. A (all 4 channels)
DEPFET power supply Status of the develompent progress: time scale begin of 2007 Development steps and work packages: available prototype for S 3 a-System (CURO 2/Switcher 2) linearity / dynamic range / control deviation now load tests (resistive, capacitive and dynamic) firmware debugging for the USB microcontroller EMI and noise measurements S 3 a-prototype: stable operation with module adapting to the S 3 b-system redesign hardware ? Summer 2009 ? writing the application software S 3 b-prototype: final tests finally 10 power supplys ready to use with S 3 b, some parts are already available -> parallel to the development working on HW
DEPFET power supply Outlook with respect to the next generation of readout systems: … after the S 3 a-prototype is finally tested … Modifications for S 3 b readout system (short term goal): - high power 5 V channel for the digital readout board - application software upgrade (win + linux) Modifications for DCD readout system (long term goal): - channels with higher current limitation. . . (more than 300 m. A) - high current channels with positive output + current sink capability Wish list for future development steps: - . . . jschneider@physik. uni-bonn. de …
DEPFET power supply Notice! • We definitely need the multi channel power supply for comfortable and save operation of the DEPFET system in our labs and TB • Which direction should the development take for the power supply? – – > > power supplys for lab operation with S 3 b power supplys for TB operation with S 3 a telescope power supplys for TB operation with S 3 b telescope any operation with DCD system . . . other questions? . . .
… many thanks ! …
DEPFET power supply Quad supply card: isolated power supply & filter EEPROM digital isolators SPI ADC DA DAC DACC . current sense programmable voltage source current sense voltage sense Front panel Bus connector 24 V output voltages • • • four independent programmable output voltages with common floating ground voltage range: -25 V … +25 V output current : • • • voltage & current read back EEPROM stores/restores voltage settings optional front panel for local control – – +/- 15 m. A (OPA output) max. 300 m. A (power transistor, config. current limit & pol. ) Quad supply module card
- Slides: 17