TY - JOUR
T1 - Status report of the 1 MV AMS facility at the Centro Nacional de Aceleradores
AU - Chamizo Calvo, Elena
AU - Santos, Francisco Javier
AU - Lopez-Gutierrez, Jose Maria
AU - Padilla, Santiago
AU - Garcia-Leon, Manuel
AU - Heinemeier, Jan
AU - Schnabel, Christoph
AU - Scognamiglio, Grazia
PY - 2015
Y1 - 2015
N2 - SARA (Spanish Accelerator for Radionuclides Analysis) was the first multielemental AMS facility installed in Spain in 2005. Since then it has been dedicated to the routine analysis of several radionuclides, such as Be-10, C-14, Al-26, I-129 and Pu isotopes. Tests have been carried out with other isotopes, such as Ca-41, U-236 and (NP)-N-237, and several changes have been made to the original facility to improve performance. First, an upgraded version of the ion source SO-110 has allowed us more stable measurement conditions for volatile elements (i.e. iodine), and a better general performance. Besides, changes in the target geometry have improved the ionization efficiency and long-term stability of the source output. Moreover, different software upgrades have been introduced to meet our routine operational needs. Finally, changing the movable Faraday-cup associated electronics now allows the measurement of smaller currents (in the range of pA), which has been key for the study of U-236/U-238 atomic ratio in environmental samples. Apart from these modifications it has to be noted that routine radiocarbon measurements have been moved to a Micadas system (200 kV) installed at CNA in 2012. In this paper we will illustrate the evolution of the facility up to now, and our future prospects will be introduced. (C) 2015 Elsevier B.V. All rights reserved.
AB - SARA (Spanish Accelerator for Radionuclides Analysis) was the first multielemental AMS facility installed in Spain in 2005. Since then it has been dedicated to the routine analysis of several radionuclides, such as Be-10, C-14, Al-26, I-129 and Pu isotopes. Tests have been carried out with other isotopes, such as Ca-41, U-236 and (NP)-N-237, and several changes have been made to the original facility to improve performance. First, an upgraded version of the ion source SO-110 has allowed us more stable measurement conditions for volatile elements (i.e. iodine), and a better general performance. Besides, changes in the target geometry have improved the ionization efficiency and long-term stability of the source output. Moreover, different software upgrades have been introduced to meet our routine operational needs. Finally, changing the movable Faraday-cup associated electronics now allows the measurement of smaller currents (in the range of pA), which has been key for the study of U-236/U-238 atomic ratio in environmental samples. Apart from these modifications it has to be noted that routine radiocarbon measurements have been moved to a Micadas system (200 kV) installed at CNA in 2012. In this paper we will illustrate the evolution of the facility up to now, and our future prospects will be introduced. (C) 2015 Elsevier B.V. All rights reserved.
KW - AMS
KW - Status
KW - CNA
KW - Accelerator Mass Spectrometry
KW - HVEE
KW - SYSTEM
KW - CALIBRATION
KW - STANDARDS
KW - SPAIN
U2 - 10.1016/j.nimb.2015.02.022
DO - 10.1016/j.nimb.2015.02.022
M3 - Journal article
SN - 0168-583X
VL - 361
SP - 13
EP - 19
JO - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
JF - Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
ER -