plasma panel sensor – tel-aviv september 27 2012

Plasma Panel Sensor – Tel-Aviv

September 27 2012

The Tel-Aviv University team

• Professor Erez Etzion• Dr. Yan Ben-Hammou• Meny Ben-Moshe• Nir Guttman• Yiftah Silver

•15 years of detectors R&D for High energy physics and the LHC•Testing the TGCs for the ATLAS experiment •Testing and developing the STGC for the ATLAS upgrade

The lab is currently under construction, moving into a bigger room to better accommodate the test-bench, gas system, electronics etc.

9/27/2012 Tel Aviv University

Tel Aviv University 4

Experiment setup

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Each RO line is X100 Attenuated and 100Ω terminated

10 μm position precision of collimated source

Discriminator

10 RO lines

VME V560counter

HV line quenched with 20MΩ connected to a 1MΩ /100MΩ voltage divider

5

Source position

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Source sits here

1cm thick, Delrin collimator, with a 3 mm slit opening

Tel Aviv University

6

14 hour measurement

• collimated Source was left on the same position (above RO channel 7) for ~14 hours.

9/27/2012 Tel Aviv University

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Each histogram shows the ratio between each channel and the channel beneath the source (7).

hour

ratio

1 2 3 4

5 6 7 8

9 10

Tel Aviv University

8

Position scan

• Each full turn of the micrometer moves the source by 1mm

• Started the scan when the micrometer read is 60mm• Made 16 measurements each of 5minutes and 1mm

apart. • CF4 gas, 600 Torr, 2316V .

9/27/2012 Tel Aviv University

TAU - status report 99/7/2011

49mm 50mm 51mm 52mm

53mm 54mm 55mm 56mm

60mm 59mm 58mm 57mm

cpm

Channel

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10

Source position measurement

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• points in this graph are the Gaussian fit results

• Errors are σ/√(n-1)• Numbers in the x-axis

have no global meaning, simply the read of the micrometer and not the distance from any real point in space…

• The electrode pitch in this panel (10 electrodes per inch) is the slope of this line: 0.4 electrodes per mm…

Tel Aviv University

signal processing

• Measuring the pulse as a function of HV line number.

RO

85 24105 55

Volts

Time

Panel

HV

9/27/2012 Tel Aviv University