Transcript Fr_02_Schneider_PowerSupply

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
y
Beam
DUT
Beam
x
- moving capability in x, y
(phi for the DUT)
- moving range:
100/150mm (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:
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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?
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•
•
•
•
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•
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
•
Single channel
supply module
HV module
Relay card
D-Sub connector
to DEPFET module
21 supply voltages
each module has a floating ground
Controller
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–
•
Digital
isolators
5 quad supply modules + 1 HV module
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–
•
Digital
Digital
isolators
Digital
isolators
Digital
Quad channel
isolators
Digital
Quad
channel
isolators
supply
module
Quad
channel
isolators
supply
module
Quad
channel
supply
module
Quad
channel
supply module
supply module
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
@
@
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@
0 - 25 mA
0 - 25 mA
0 - 25 mA
0 - 25 mA
source/sink
source/sink
source/sink
source/sink
0 bis +25 V
0 bis -25 V
0 bis +8,125 V
0 bis -8,125 V
@
@
@
@
0 - 300 mA
0 - 300 mA
0 - 300 mA
0 - 300 mA
source
source
source
source
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•
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 mA (all 4 channels)
DEPFET power supply
Status of the develompent progress:
time scale
begin of
2007
Development steps and work packages:
available prototype for S3a-System (CURO2/Switcher2)
linearity / dynamic range / control deviation
now
load tests (resistive, capacitive and dynamic)
firmware debugging for the USB microcontroller
EMI and noise measurements
S3a-prototype: stable operation with module
adapting to the S3b-system
redesign hardware ?
Summer
2009 ?
writing the application software
S3b-prototype: final tests
finally 10 power supplys ready to use with S3b, 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 S3a-prototype is finally tested …
Modifications for S3b readout system (short term goal):
- high power 5V 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 300mA)
- high current channels with positive output + current sink capability
Wish list for future development steps:
-
... [email protected] …
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?
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>
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>
power supplys for lab operation with S3b
power supplys for TB operation with S3a telescope
power supplys for TB operation with S3b telescope
any operation with DCD system
... other questions? ...
…
many thanks !
…
DEPFET power supply
Quad supply card:
isolated power supply
& filter
EEPROM
SPI
ADC
DA
DAC
DAC
C
DAC
.
current sense
current sense
current
sense
programmable
voltage
source
current sense
voltage sense
Front panel
Bus connector
24 V
output voltages
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•
•
four independent programmable output voltages with
common floating ground
voltage range: -25V … +25V
output current :
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–
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+/- 15 mA (OPA output)
max. 300 mA (power transistor, config. current limit & pol.)
voltage & current read back
EEPROM stores/restores voltage settings
optional front panel for local control
Quad supply module card