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Martin Frey, IEKP, Karlsruhe 26.05.2008 Erkki Anttila, Sandor Czellar, Jaakko Härkönen, Matti Kortelainen, Tapio Lampén, Panja Luukka, Maria Maksimow,

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Presentation on theme: "Martin Frey, IEKP, Karlsruhe 26.05.2008 Erkki Anttila, Sandor Czellar, Jaakko Härkönen, Matti Kortelainen, Tapio Lampén, Panja Luukka, Maria Maksimow,"— Presentation transcript:

1 Martin Frey, IEKP, Karlsruhe 26.05.2008 Erkki Anttila, Sandor Czellar, Jaakko Härkönen, Matti Kortelainen, Tapio Lampén, Panja Luukka, Maria Maksimow, Henri Moilanen, Teppo Mäenpää, Eija Tuominen, Jorma Tuominiemi, Esa Tuovinen, Heikki Viljanen (Helsinki Institute of Physics) Lenny Spiegel (Fermilab) Tobias Barvich, Alexander Dierlamm, Martin Frey, Frank Hartmann, Maike Neuland, Hans-Jürgen Simonis, Pia Steck (Universität Karlsruhe) Bernard De Callatay, Thomas Keutgen, Vincent Lemaitre, Otilia Militaru (Université Catholique de Louvain) Alexander Kaminskiy, Dario Bisello (Università di Padova). Burt Betchart, Regina Demina, Yuri Gotra, Doug Orbaker, Sergey Korjenevski (University of Rochester) Irradiated MCz-Sensors for a Testbeam

2 Martin Frey, IEKP, Karlsruhe 26.05.2008 Intention of the Beamtest Open questions concerning the properties of irradiated Magnetic Czochralski sensors: Production of sensors  qualification of sensors  irradiation  testing of sensors  production of modules  testing  beamtest with a beam-telescope - Signal / Noise - Efficiency - Resolution - Type-Inversion

3 Martin Frey, IEKP, Karlsruhe 26.05.2008 theoretical prediction, simulation (Jaakko Härkönen) test results Results of the last Test The results are very well conform with the prediction! Module: SNR: Reference ~40 1E14p ~24 5E14p ~18 Aim of the new test: Going to higher fluences Mixed irradiations with protons and neutrons

4 Martin Frey, IEKP, Karlsruhe 26.05.2008 Plan for the Fluences Irradiation plan for large MCz and Fz sensors MaterialFluencen/p mix % MCz5.00E+14 20/80 MCz8.00E+14 12/88 MCz1.00E+15 10/90 MCz2.00E+15 0/100 MCz3.00E+15 0/100 MCz3.00E+15 0/100 MCznon-irradiated MCznon-irradiated Fz1.00E+14 100/0 Fz1.00E+14 0/100 Fz5.00E+14 20/80 Fz5.00E+14 0/100

5 Martin Frey, IEKP, Karlsruhe 26.05.2008 Sensors - Detector processing was done at the clean room of Helsinki University of Technology (TKK) Micro and Nanofabrication Centre (MINFAB) - Materials: n-type Magnetic Czochralski (Okmetic) and Float Zone (Topsil; RD50 common order) silicon wafers - 300µm thickness - 768 channels, 50µm pitch - Suitable for CMS 6-APV hybrid - size 4.3 x 4.1 cm 2 - MCz V fd ~350V, FZ V fd < 10V On one wafer: - 2 sensors - 12 mini strip sensors 0.9×1.2 cm 2 with 128 channels - 24 diodes 0.25 ×0.25 cm 2 Pitch adapters also processed in MINFAB glass material with Cr-Al metallization

6 Martin Frey, IEKP, Karlsruhe 26.05.2008 Sensor MCz0802A before Irradiation V depl. = 350 V to 380 V The sensors show a very good quality and all sensor parameters are well conform with the specifications.

7 Martin Frey, IEKP, Karlsruhe 26.05.2008 Sensor 0802MCzA before Irradiation Sensors of the 2007 beamtest showed higher leakage currents and some problems wit the coupling capacitance probably due to problems with the oxide. Nevertheless the test was successful and the results were promising.  No sensor problems this time. Good test results expected.

8 Martin Frey, IEKP, Karlsruhe 26.05.2008 T = -10°C Fluence: 7.6*10^14 neq. protons / cm^2 Irradiation with neutrons followed Sensor MCz0802A after Irradiation T = -10°C Pinholes might have caused some noise problems the last time. Problematic strips will not be bonded to the APVs.

9 Martin Frey, IEKP, Karlsruhe 26.05.2008 Sensor MCz0802A after Irradiation No changes in coupling capacitances and bias resistors.

10 Martin Frey, IEKP, Karlsruhe 26.05.2008 Sensor MCz0804A before Irradiation

11 Martin Frey, IEKP, Karlsruhe 26.05.2008 Sensor MCz0804A after Irradiation Fluence: 1.35*10^15 neq. protons / cm^2 Irradiation with neutrons followed

12 Martin Frey, IEKP, Karlsruhe 26.05.2008 Sensor MCz0804A after Irradiation

13 Martin Frey, IEKP, Karlsruhe 26.05.2008 Sensor MCz0804B before Irradiation

14 Martin Frey, IEKP, Karlsruhe 26.05.2008 Sensor MCz0804B after Irradiation Fluence: 2.2*10^15 neq. protons / cm^2 Irradiation with neutrons followed

15 Martin Frey, IEKP, Karlsruhe 26.05.2008 Sensor MCz0804B after Irradiation

16 Martin Frey, IEKP, Karlsruhe 26.05.2008 Conclusion Sensors for the new testbeam are of a very good quality No problems with CC or Ileak like last year Proton irradiation was done, neutron irradiation has just been finished Qualification after proton irradiation showed good sensor properties Qualification after neutron irradiation will follow, no problems expected Module building will start soon, preparations have been done  Fundament for good testbeam results is there

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