DANTE A heavy ion detector based on MCP

DANTE: A heavy ion detector based on MCP for the CLARA -PRISMA setup On behalf of the Clara-Prisma collaboration Jose Javier Valiente Dobón Laboratori Nazionali di Legnaro (INFN)

Overview • • • The Clara-Prisma setup The DANTE array The DANTE detectors DANTE in beam performance Summary

The CLARA-PRISMA setup Laboratori Nazionali di Legnaro (INFN), Italy Quadrupole Dipole Start detector X-Y, time 6 m (TOF) IC MWPPAC Angular range 30 o - +130 o E-ΔE X-Y, time ΔΩ = 80 msr ΔZ/Z 1/60 (Measured) ΔA/A 1/190 (Measured) Energy acceptance ± 20% Bρ = 1. 2 T. m

The CLARA spectrometer • 24 Euroball Clover detectors with anti-Compton. • Efficiency ~ 3 % (Eγ= 1. 3 Me. V) • In-beam rays Spettrometro CLARA See talk by A. Gadea Wednesday 6 th 14: 30 (F 9 -1)

The DANTE array Detector Array for multi Nucleon Transfer Ejectiles • Used in binary reactions, it is palced at the grazing angle • Limited efficiency of the PRISMA-CLARA setup No γ-γ coincidences. • DANTE (heavy ion detector based on MCP) reveals the position interaction of the recoils Doppler correction. • DANTE placed at the grazing angle, has a high efficiency γ-γ coincidences CLARA MCP (50 x 70 mm) detectors Grazing angle 74° Beam 26° PRISMA Beam

The DANTE array Versatility of DANTE Use of different configurations depending on the Grazing angle of the reaction 26 o 42 o 74 o 58 o 90 o

The DANTE detectors Configuration of a single detector Thickness: 13 mm Mylar Linea di ritardo MCP Delay line Preamplifier in vacuum Lateral section

Performance of DANTE Statistics Reaction: 70 Zn on 238 U at 460 Me. V, Θgrazing=64 o Statistics Energy resolution 1. 2%

Performance of DANTE Reaction: 96 Zr on 124 Sn at 500 Me. V, Θgrazing= 38 o #1 #2 #3 Beam Like Fragments Target Like Fragments

Performance of DANTE Reaction: 82 Se on 170 Er at 460 Me. V, Θgrazing= 52 o

Summary and Future work • DANTE (Detector Array for multi. Nucleon Transfer Ejectiles) ancillary detector of CLARA gamma array. • Placed at the grazing angle, high efficiency γ-γ coincidences • On beam tests of DANTE coupled to PRISMA-CLARA: • Around two order of magnitude more statistics for γ-γ coincidences than PRISMA-CLARA • Energy resolution around 1. 2% for inelastic channels • It is able to differentiate between BLF and TLF

Acknowledgments Legnaro A. Gadea, A. Gottardo, G. De Angelis, L. Corradi, E. Fioretto, D. Napoli, R. Orlandi, E. Sahin, A. Stefanini, S. Szilner, F. della Vedova Padova E. Farnea, D. Bazzacco, S. Lenzi, S. Lunardi, R. Menegazzo, D. Mengoni G. Montagnoli, F. Scarlassara, C. A. Ur Milano S. Brambilla, G. Benzoni, S. Leoni, B. Million Flerov, Dubna N. A. Kondratiev, E. M. Kozulin

Test of the DANTE detectors Test done with an α source • Time resolution 130 ps (TAC-ADC) • Position resolution <1 mm • High counting rate • High noise rejection TOF X coordinate Y coordinate Amplitude

Performance of DANTE Reaction: 82 Se on 170 Er at 460 Me. V, Θgrazing= 52 o