The energy loss profiles of different ion beams (6Li, 27Al and 50Ti) impinging on CF4, isobutane and P10 have been measured with the active target ACTAR TPC demonstrator. The pressure of the gas, monitored during the experiment, has been chosen in order to stop the ions inside the active zone. Starting from the energy loss calculation produced by the SRIM code, the experimental ion tracks have been simulated, taking into account the effect of the thermal diffusion of electrons during their drift towards the pad plane under the effect of a uniform electric field. The uncertainty in the geometry, mainly due to the thickness and deformation of the mylar interface window between the gas volume and the high vacuum line, has been taken into account. A good agreement is obtained between the experimental and simulated energy loss profiles.
Energy loss profile measurements using the ACTAR TPC demonstrator active target / Camaiani, A; Barlini, S; Stefanini, AA; Casini, G; Alvarez-Pol, H; Arokiaraj, A; Baldesi, L; Bolzonella, R; Cardella, G; Ciampi, C; Cicerchia, M; Cinausero, M; Collazuol, G; De Filippo, E; Domenichetti, L; Fabris, D; Fernandez-Dominguez, B; Fioretto, E; Frosin, C; Galtarossa, F; Giovinazzo, J; Gnoffo, B; Gramegna, F; Grinyer, GF; Lombardo, I; Marchi, T; Martorana, NS; Mentana, A; Ottanelli, P; Pagano, EV; Pancin, J; Pellegriti, MG; Piantelli, S; Pirrone, S; Poleshchuk, O; Raabe, R; Roger, T; Russo, M; Russotto, P; Scomparin, L; Swartz, JA; Valdre, S; Verde, G; Vigilante, M; Yang, J. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION B, BEAM INTERACTIONS WITH MATERIALS AND ATOMS. - ISSN 0168-583X. - ELETTRONICO. - 542:(2023), pp. 188-194. [10.1016/j.nimb.2023.07.001]
Energy loss profile measurements using the ACTAR TPC demonstrator active target
Camaiani, A;Barlini, S
;Baldesi, L;Collazuol, G;Frosin, C;Lombardo, I;Marchi, T;Ottanelli, P;Piantelli, S;Pirrone, S;
2023
Abstract
The energy loss profiles of different ion beams (6Li, 27Al and 50Ti) impinging on CF4, isobutane and P10 have been measured with the active target ACTAR TPC demonstrator. The pressure of the gas, monitored during the experiment, has been chosen in order to stop the ions inside the active zone. Starting from the energy loss calculation produced by the SRIM code, the experimental ion tracks have been simulated, taking into account the effect of the thermal diffusion of electrons during their drift towards the pad plane under the effect of a uniform electric field. The uncertainty in the geometry, mainly due to the thickness and deformation of the mylar interface window between the gas volume and the high vacuum line, has been taken into account. A good agreement is obtained between the experimental and simulated energy loss profiles.
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