Si Si C Diamond detector tests n To

Si – Si. C – Diamond detector tests n. To. F EAR 1 F. Murtas INFN - Laboratori Nazionali di Frascati and CERN M. Rebai , M. Tardocchi, M. Kushoro INFN – Milano Bicocca - CNR C. Cazzaniga ISIS Neutron source Ø Ø Installations in EAR 1 Beam dump area Measurements with Timepix Quads Measurements with Diamondpix: higly pixelated diamond detector Silicon Carbide detector

Changes in the EAR 1 dump area A new optical plane has been mounted on May 2018 on top of the linear stage to move remotely the detectors without access Quad Timepix detector Silicon Timepix detector Diamondpix detector Optical table -2 - CERN & INFN F. Murtas n. To. F Collaboiration Meeting Granada November 28 th 2018 2

Timepix : Hybrid Silicon Pixel Detectors Sensor material can be changed according to the application Already used : Silicon, Ga. As, Cd. Te, Diamond, Gas with GEM (GEMPix) To be tested : Silicon Carbide, Amorphous Silicon (radiation hard detectors) -3 - CERN & INFN F. Murtas n. To. F Collaboiration Meeting Granada November 28 th 2018 3

Timepix family Timepix : Timepix 3 Timepix 2 Time frame oriented Pixel oriented • • • Counting mode or Time of arrival or Charge • • • Counting mode and Time of arrival and Charge Pixel oriented and Time frame oriented J J J Limited time frame Or fast neutron Or thermal neutron Triggered Small ammount of data J L L Continous measurement No Triggered Big ammount of data -4 - CERN & INFN F. Murtas New Katherine readout system with trigger n. To. F Collaboiration Meeting Granada November 28 th 2018 4

Timepix Quad The two Timepix Quads used for the laser alignment in EAR 1 have been tested also on the North Area H 8 test beam with really good results : Image subtraction We are able now to measure the channeled particles also inside the main beam. Without any object on the beam Crystal in VR + septum Volume Reflection Chanelling -5 - CERN & INFN F. Murtas n. To. F Collaboiration Meeting Granada November 28 th 2018 5

Timepix quad for thermal neutrons A layer of B 4 C deposited by Liopking (Lund) on an Al support has been glued in front of a Timepix Quad and placed on the beam EAR 1 for thermal mneutron detection Data analysis in progress -6 - CERN & INFN F. Murtas n. To. F Collaboiration Meeting Granada November 28 th 2018 6

DIAMONDPix Higly pixelated diamond detector -7 - CERN & INFN F. Murtas n. To. F Collaboiration Meeting Granada November 28 th 2018 7

Diamondpix : a radiation hardness detector Made by Element 6 and Fraunhofer IZM Gold cathode on diamond upward surface Pads on diamond downward surface Timepix 3 Pads Two Diamondpix have been tested on charged and neutron beam for future applications. -8 - CERN & INFN F. Murtas n. To. F Collaboiration Meeting Granada November 28 th 2018 8

Diamondpix : a radiation hardness detector Beam image Neutron / Gamma discrimination Neutrons Gammas G. Claps, F, Cordella, C. Digiulio, L. Foggetta Details on : Diamondpix: a CVD diamond detector with Timepix 3 chip interface TNS 00581 -2018 -R 1 -9 - CERN & INFN F. Murtas n. To. F Collaboiration Meeting Granada November 28 th 2018 9

Silicon Carbide Measurements -10 -CERN & INFN F. Murtas n. To. F Collaboiration Meeting Granada November 28 th 2018 10

Detectors Installation I The detectors for fast neutrons: 1 Diamond 5 xx 5 x 0. 15 mm 3 1 Diamond 5 x 5 x 0. 5 mm 3 1 Silicon 2 x 2 x 0. 14 mm 3 1 Diamond 2 x 2 x 0. 3 mm 3 1 Silicon Carbide 5 x 5 x 0. 1 mm 3; Front-end and DAQ 5 CIVIDEC preamplifiers (2 C 6, 2 C 1, 1 CX-L); 1 DT 5730 CAEN Digitizer 1 DT 5751 CAEN Digitizer Data analysis in progress -11 -CERN & INFN F. Murtas n. To. F Collaboiration Meeting Granada November 28 th 2018 11

Detectors Installation II 1 Diamonpix + 5 Detectors -12 -CERN & INFN F. Murtas n. To. F Collaboiration Meeting Granada November 28 th 2018 12

Si. Carbide : Signal and Density plot Si. C Density Plot (Time of Flight – Ed) Analitical -13 -CERN & INFN F. Murtas n. To. F Collaboiration Meeting Granada November 28 th 2018 13

Si. Carbide : To. F Spectrum Time Spectrum Theoretical To. F (ns) Measured 1 -14 -CERN & INFN F. Murtas 3 5 10 n. To. F Collaboiration Meeting Granada November 28 th 2018 20 E (Mev) 14

Si. Carbide : Deposited Energy Spectrum Elastic region on 12 C (n, a) on Si En = 9 Me. V -15 -CERN & INFN F. Murtas En = 10 Me. V n. To. F Collaboiration Meeting Granada November 28 th 2018 15

Summary Ø The installation of the optical table allow to mount easily light detector in the beam line and move it remotely without acces Ø Good results obtained with Timepix family detectors but still some problems with readout and trigger Ø Other detectors have been tested with the goal to obtain better radiation hardness performances for burning plasma monitoring and neutron beam monitors for ESS Ø Analysis still in progress Thank you for your attention ! -16 -CERN & INFN F. Murtas n. To. F Collaboiration Meeting Granada November 28 th 2018 16