Electronics for first beam tests of diamond sensors
Sponsored Links
This presentation is the property of its rightful owner.
1 / 12

Electronics for first beam tests of diamond sensors PowerPoint PPT Presentation


  • 107 Views
  • Uploaded on
  • Presentation posted in: General

Electronics for first beam tests of diamond sensors. Presented by: Igor Emeliantchik. Current Status of Diamond Sensors Research. Laboratory tests with 90 Sr: Charge collection efficiency of 20%. Next step: first prototype for beam tests. Beam tests planned: PITZ ate first, then

Download Presentation

Electronics for first beam tests of diamond sensors

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Electronics for first beam tests of diamond sensors

Presented by: Igor Emeliantchik


Current Status of Diamond Sensors Research

Laboratory tests with 90Sr:

Charge collection efficiency of 20%

Next step:

first prototype for beam tests

Beam tests planned:

PITZ ate first,

then

CERN, HERA, TTF2

Instrumentation of the Forward Region for a Linear Collider Detector Prague, April 15 - 17, 2004


What should we expect at PITZ?

5MeV

Typical spectrum of x-ray tube.

Something similar can be expected

at sensor location

Instrumentation of the Forward Region for a Linear Collider Detector Prague, April 15 - 17, 2004


Diamond Sensor and g-quanta

Probability of photon interaction within

300 mm of diamond sensor

Calculations are based on data compiled by W. H.McMaster et. al. Compilation of X-ray Cross-Sections, National Bureau of Standards, for calculation of x-ray cross sections,

http://www.csrri.iit.edu/periodic-table.html

Photons with energies of several keV are expected

to give main contribution.

13 eV are needed for 1 e-hole production.

Thus 1 photon will give about 100e.

So, if PITZ halo contains a dozen or more photons

with energy of several keV per bunch, we have

a chance to register it with our diamond sensor

Instrumentation of the Forward Region for a Linear Collider Detector Prague, April 15 - 17, 2004


Time Structure of the Beam at PITZ

So, we need fast electronics, able to operate

at 100ns bunch rate with minimum noise

Instrumentation of the Forward Region for a Linear Collider Detector Prague, April 15 - 17, 2004


Metallized plastic box

Rfb

Cfb

Diamond

CSP

“Tetrod”

OpAmp

AD829

Output

Ccal

50

Test

Readout Electronics for Beam Tests of Diamond Sensors

Charge-sensitive preamplifier “Tetrod” is a low-noise

one-channel monolythic IC, developed at NC PHEP

(Minsk), and produced by microelectronics plant

“Integral” (Minsk)

Instrumentation of the Forward Region for a Linear Collider Detector Prague, April 15 - 17, 2004


Two Types of “Tetrod” Preamplifier IC

Tetrod-JFET

preamplifier

Tetrod-BJT

preamplifier

Tetrod preamplifiers

were designed for

calorimetric applications,

so they have big dynamic range,

at least 13 bits

Instrumentation of the Forward Region for a Linear Collider Detector Prague, April 15 - 17, 2004


Tetrod-BJT amplifier

Instrumentation of the Forward Region for a Linear Collider Detector Prague, April 15 - 17, 2004


Oscillograms of Tetrod-BJT Amplifier

Preamp output

20ns/div

Shaper output

20ns/div

Instrumentation of the Forward Region for a Linear Collider Detector Prague, April 15 - 17, 2004


Performance of Tetrod-BJT Amplifier

Noise

Linearity

Instrumentation of the Forward Region for a Linear Collider Detector Prague, April 15 - 17, 2004


Performance of Tetrod-jFET amplifier

Noise

Linearity

Instrumentation of the Forward Region for a Linear Collider Detector Prague, April 15 - 17, 2004


Conclusions

Two amplifiers, Tetrod-BJT and Tetrod-jFET are

designed, produced, and tested.

Tetrod-jFET has slightly better noise performance.

Tetrod-BJT is faster

Both amplifiers seem to be suitable for beam tests

Instrumentation of the Forward Region for a Linear Collider Detector Prague, April 15 - 17, 2004


  • Login