on silicon detectors with red amp infrared laser beams An internship with the SSD Team PHDTDD Annika Altwein 1 agenda Set up Components PID controller Measuring data Further options ID: 286818
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Slide1
Temperature regulation and measurements on silicon detectors with red & infrared laser beams
An internship with the SSD Team (PH-DT-DD)
Annika Altwein
1Slide2
agenda
Set upComponentsPID controllerMeasuring dataFurther optionsTCT measurements
SettingMeasuring datasources
Annika Altwein
2Slide3
Set up
Annika Altwein
3Slide4
Control engineering
Annika Altwein
4Slide5
Inside the box
Annika Altwein
5Slide6
Temperature control system
Annika Altwein
6Slide7
How does it work
Annika Altwein
7Slide8
Peltier element
http://home.arcor.de/glaube.u/spf-modul/images/tem_3.png
Annika Altwein
8Slide9
PID ControllerTemperature controlSet
to the inertia of the systemreach set temperature as fast as possible
compensates disturbances/ errors
Annika Altwein
9Slide10
PID Controller
Three parameters for the controller:P (proportional)–controller focusses on present variance
Reacts immediately
only reaction in case of present error
I
(
i
ntegral)–controller eliminating steady-state deviation
Delayed reaction
No impact only in case of constant value without deviation
D
(
d
erivative)–controller prediction due to current change
Fast reaction
Reacts only to changes, not to deviations in general
Annika Altwein
10Slide11
functioning
Weighting of the parameters specific contributions will be summated
P
I
D
Annika Altwein
11Slide12
What it should look like
time
Current value/
Set value
https://sp.yimg.com/ib/th?id=JN.Wvn5%2bDHe%2bNcYiS0EA7aP0w&pid=15.1&P=0
Annika Altwein
12Slide13
How does it look
Annika Altwein
13Slide14
Further optionsFind out specific parameters due to curve tracing
Brute-force-method to find fitting valuesbigger project than expected, needs more time
Annika Altwein
14Slide15
TCT measurementsConnection between fluence and charge
measurements with a set of irradiated sensors and laser beamscomparing the induced current signal caused by charge carriers
Annika Altwein
15Slide16
main idea
Annika Altwein
16Slide17
red laser from both sides
C_Gallrapp_EIRO2013
Annika Altwein
17Slide18
Radiation with infrared
Annika Altwein
18Slide19
Radiated sensors
Name
Fluence (
)
4 (in
the
plot
)
Non-
irradiated
A2B (in
the
plot
)
B2B (in
the
plot
)
C1A
D1 (in
the
plot
)
E1
O1A (in
the
plot
)
Name
4 (in
the
plot
)
Non-
irradiated
A2B (in
the
plot
)
B2B (in
the
plot
)
C1A
D1 (in
the
plot
)
E1
O1A (in
the
plot
)
Proton
irradiated
, PS 24GeV/c
Float
Zone n-in-p
Annika Altwein
19Slide20
Infra-red from front side (1000V)Annika Altwein
20Slide21
Red from back side (1000V)Annika Altwein
21Slide22
Annika Altwein
22Slide23
Infrared from front side
Annika Altwein
23
full
depletionSlide24
Thank you
Sascha
for the
organization and Christian and the SSD group for my
great
internship
Annika Altwein
24Slide25
Sources
https://www.samson.de/pdf_de/l102de.pdf
http://www.chemgapedia.de/vsengine/vlu/vsc/de/ch/7/tc/regelung/grundlagen/regelung_grundlagen.vlu/Page/vsc/de/ch/7/tc/regelung/grundlagen/regler/pid_ctrl.vscml.html
http://www.physik.uni-augsburg.de/~sausemar/FP14/FP14.pdf
http://en.wikipedia.org/wiki/PID_controller
http://www.hephy.at/fileadmin/user_upload/Publikationen/thesis_auzinger.pdf
Christian
Gallrapp
Own measurements
Pictures: own pictures (if not documented differently)
Annika Altwein
25Slide26
P-controllerReaction in case of current error
reacts immediatly
Grave errors – strong reaction,
little errors– little reaction
Annika Altwein
26Slide27
I-Controllerfocusses on preceded errors
delayed reactionStrong reaction in case of short times of integration, long times of integration lead to less reactionOnly put out of the running if measured value constant and no error left
Annika Altwein
27Slide28
D-controllerFocusses only on present change of error, anticipates development
fast reactionHigh rate of change leads to strong counteraction
Responds only to changes, not in case of constant errors (put out of the running)
Annika Altwein
28Slide29
componentssensor
should have certain temperature for measurementSensor of temperature measures temperature on different positionsPeltier
warms up/ cools down copper platecooling cools down one side of the
Peltier
Copper plate
conducts temperature to detector
Annika Altwein
29