ELectro-Optical FLEXible detectors for mixed radiation fields ELOFLEX ELectro-Optical FLEXible detectors for mixed radiation fields TIFPA: RN – Alberto Quaranta. INFN-BO: RL – Beatrice Fraboni.

Mixed Radiation Fields Therapies with combined radiation fields (X-rays and protons). Harsh environments (space exploration). Security and safety monitors.

Flexible Radiation Detectors Conformation to complex shapes for accurate dose measurements. Large area applications. Dose and energy distribution.

Organic Radiation Detectors i-FLEXIS EU Project (2013-2016) www.iflexis.eu PET/PVA substrate Gold electrodes Organic semiconductor X-Rays Low cost and low power consumption. Printable on large areas of flexible substrates. Different crystalline thickness. Bending radius 0.3 cm. B. Fraboni et al., Adv. Mater., 24, 17, 2289 (2012) Ciavatti et al. Adv. Mater. Adv. Mater. 27, 7213 (2015) L. Basiricò et al. Nature Comm. 7, 13063 (2016)

Organic Radiation Detectors Linearity. High sensitivity. High reproducibility and stability.

Quantum Dots Scintillators High Z. Emission wavelength tunability with the dimension. Solubility controlled by surface organic ligands. Different compositions with suitable hysotopes. Dose analysis through either light yield or yield degradation. Several commercial Cd based compositions and few Cd-free QDs.

Previous Experience on Scintillators Polysiloxane scintillators for neutrons (ORIONE- HYDE). Pulse shape discrimination in polysiloxane scintillators (HYDE). Irradiation effects on quantum dots for nanodosimetry (NADIR). H+ 2.0 MeV on PSS H+ 2.0 MeV on PVA

ELOFLEX Aims Flexible electro-optical detectors obtained by coupling organic semiconductors with polymers (PVA/PSS) containing QDs. Organic semiconductors more suitable for low LET radiation. QD for on the detection of high LET radiation by on line detection of either the light yield or the yield degradation DAQ Proton beam Vis-light X-ray

First year: Responsivity Tests Responsivity of both kinds of detectors to different radiations. Proton beams: APSS TIFPA facility (70-230 MeV). AN2000 (2 MeV), CN (3-6 MeV). X-ray beams: Trieste Synchrotron, X-ray tubes (BO-TN).

First year: QD Synthesis with Atmospheric Plasma Fast and physical technique suitable for different types of QDs: Cd-free dots. ZnS/ZnSe. Graphene QDs. Diamond nanocrystals.

Second year: production of mixed detectors Junction between organic semiconductor devices and QD based scintillators. Radiation detection with independent measurement of both electrical and optical signals. Radiation detection where the optical signal is detected by the organic semiconductor (preliminar tests). SiPM detector Refl. Coating

Second year: production of scalable systems First large area detectors. Acquisition of doctor blade for the production of scalable systems (20 k€).

FTE TIFPA INFN-BO Alberto Quaranta 0.4 Enrico Zanazzi (PhD) 0.7 Andrea Ficorella (PhD) 0.3 Viviana Mulloni (FBK) 0.2 Totale 1.6 INFN-BO Beatrice Fraboni 1.0 Laura Basiricò 1.0 Laura Fabbri 0.2 Totale 2.2 Percentuali TIFPA

Financial Request 2018 TIFPA INFN-BO Missioni: 3 k€ Inventariabile 37.5 k€ Consumo: 3 k€ INFN-BO Missioni: 4 k€ Consumo: 8 k€ Richieste 2018 (da discutere)

Financial Request 2019 TIFPA BOLOGNA Missioni: 2 k€ Consumo: 5 k€ Inventariable 25 k€ Consumo: 6 k€ Richieste 2019 (da discutere).