1. Dan Gabriel Ghiţă IFIN-HH
New Tandem Accelerators for Applied Research in IFIN-HH Status of the Installation of 1 MV Tandetron
Dan Gabriel Ghiţă
IFIN-HH
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2. Investment project
The infrastructure investment was done in the framework of the project 7PM/1/2008 / granted by National Authority for Scientific Research [1]
Director of the project: Dr. Nicolae Victor Zamfir (General Director of IFIN-HH)
Initiators of the subprojects for the two accelerators: Dr. Agata Olariu and Dr. Silviu Olariu [2]
[1]
[2] Romanian Reports in Physics, Vol. 63, No. 4, P. 923–928, 2011
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3. The 1 MV Tandetron Accelerator dedicated to AMS
Installation began at the beginning of 2012
Manufactured by High Voltage Engineering Europa B.V. - The Netherlands
14C/ 13C or 12C
10Be/ 9Be
26Al/ 27Al
129I/ 127I
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4. The 1 MV Tandetron Accelerator dedicated to AMS
SO110 Cs sputter ion source producing negative ions
Spherical ionizer
50 Sample holder
Tipical beam currents:
≈ 100 μA for C-
≈ 5 μA for BeO-
≈ 400 nA for Al-
≈ 8 μA for I-
ION SOURCE
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5. The 1 MV Tandetron Accelerator dedicated to AMS
90o dipole magnet with bouncer system
45o electrostatic deflector
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6. The 1 MV Tandetron Accelerator dedicated to AMS
1 MV Cockroft Walton Tandetron Accelerator
Maximum high voltage on the accelerating terminal: 1 milion Volts
Charging system: Cockroft-Walton type without moving parts
Accelerating tubes with spiraled field and titanium electrodes
Gas stripping system inside the high voltage terminal
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7. The 1 MV Tandetron Accelerator dedicated to AMS
90o analyzing magnet
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8. The 1 MV Tandetron Accelerator dedicated to AMS
Stable isotopes measurement system
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9. The 1 MV Tandetron Accelerator dedicated to AMS
Angle: 1200
Radius: 650 mm
Gap between electrodes: 25 mm
Maximum bias voltage: 60 kV
Electrostatic analyzer
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10. The 1 MV Tandetron Accelerator dedicated to AMS
Bias: 300 V
Gas: Isobutane
Window: Si3N4, 50 nm
Window size: 10 mm in diameter
Length: ~430 mm
Gas detector
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11. RESULTS FROM THE ACCEPTANCE TESTS
Isotope
Rare isotope/stable isotope (av. of 4 samples)
Average statistical error ( ‰)
Relative standard deviation ( ‰)
Background level
14C
1.3 × 10-12
2.4
3.7
1.7 × 10-15
10Be
1.5 × 10-12
12.3
6.6
2.6 × 10-14
26Al
7.4 × 10-11
7.6
12.5
3.7 × 10-15
129I
1.2 × 10-11
19.5
15.1
6.7 × 10-14
For these measurements were used standard and background samples.
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12. Chemistry laboratory High purity water system Analytical balances
Ovens
Magnetic stirrers
Professional furnaces
Vacuum and pressure pumps
Evaporators
Microscopes
Centrifuges
Ultrasonic baths
High pressure liquid chromatograph
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13. Graphitization system
AGE – 3 (Developed by Swiss Federal Institute of Technology)
Fully automated graphitisation system that uses a molecular sieve trap instead a cryotrap to transfer theCO2 from sample combustion in an EA to the graphitisation reactors.*
*L. Wacker, M. Nemec, J. Bourquin, Nuclear Instruments and Methods in Physics Research B 268 (2010) 931–934
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14. 3 MV Tandetron for IBA
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15. CONCLUSIONS
The installation of the 1 MV Tandetron accelerator, along with the chemistry laboratory and the graphitization system, creates great opportunities for research using AMS techniques in various domains like medicine, archeology, geology, material science, pharmacology, environmental sciences, forensic investigations, nuclear physics and in many other fields of research.
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16. Acknowledgments Chemists: Corina Anca Simion, Nicoleta Mihaela Florea
Tandem engineers: Daniel Vasile Moşu, Iani Mitu, Gabriel Dumitru, Bogdan Savu, Iani Mitu, Cătălin Călinescu
Tandem technical team: Dorin Moisa, Constantin Crăciun, Gheorghe Mihon, Gheorghe Ion, Cristian Florea, Cristian Păun, Ionuț Brînzan, Gigi Naghel, Mihai Badea, Stancu Cojocaru, Viorel Bătrâneanu, Cristian Popescu and Laurențiu Povariu, Vasile Ceauselu
AMS team: Cătălin Stan-Sion, Mihaela Enăchescu, Alexandru Petre, Simona Constantin, Corina Uroseviteanu
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17. THANK YOU! 1 MV Tandem website:
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