A Novel Dedicated HVE 14C AMS System

Radiocarbon ◽  
2019 ◽  
Vol 61 (5) ◽  
pp. 1441-1448
Author(s):  
M Klein ◽  
N C Podaru ◽  
D J W Mous
Keyword(s):  
High Voltage ◽  
Unique Feature ◽  
Magnetic Charge ◽  
Ion Beam ◽  
Primary Source ◽  
Feedback Loops ◽  
Tandem Accelerator ◽  
Term Operation ◽  
High Voltage Engineering

ABSTRACTHigh Voltage Engineering Europa (HVE) has designed a vacuum-insulated tandem accelerator dedicated to radiocarbon (14C) analysis. A unique feature of the design is a magnetic charge state selector that is incorporated in the high voltage terminal, which reduces the primary source of background that originates from the injection of 13CH− to negligible levels. As a result, background levels in the low 10−16 regimes are anticipated, thus supporting the most stringent 14C dating applications. Another feature of the system is the incorporation of several slit feedback loops for stabilization of the position of the ion beam throughout the system, which avoids drift and ensures stable, long-term operation. Finally, this article presents measurements and quantitative analysis of background contributions from 13CH−.

Wood Pretreatment Protocols and Measurement of Tree-Ring Standards at the Oxford Radiocarbon Accelerator Unit (ORAU)

Radiocarbon ◽  
2014 ◽  
Vol 56 (2) ◽  
pp. 709-715 ◽  
Author(s):  
Richard A Staff ◽  
Linda Reynard ◽  
Fiona Brock ◽  
Christopher Bronk Ramsey
Keyword(s):  
Tree Ring ◽  
High Voltage ◽  
Purification Method ◽  
On Line ◽  
High Voltage Engineering

This article presents the pretreatment protocols for wood samples processed at the Oxford Radiocarbon Accelerator Unit (ORAU), including recent implementation of a purification method to α-cellulose for non-routine samples. We examine the long-term reproducibility of measurement on wood samples at ORAU through the >1000 14C determinations made on known-age tree-ring standards processed in each AMS wheel since our present High Voltage Engineering Europa (HVEE) AMS system came on-line in September 2002. A discussion of background measurements is also provided.

Development of continuous wave high voltage negative ion beam injector for tandem accelerator

2019 ◽  
Vol 90 (12) ◽  
pp. 123314
Author(s):  
A. Sanin ◽  
Yu. Belchenko ◽  
A. Ivanov ◽  
A. Gmyrya
Keyword(s):  
High Voltage ◽  
Continuous Wave ◽  
Ion Beam ◽  
Negative Ion ◽  
Tandem Accelerator

scholarly journals Laser ion source of multicharged ions for ITEP accumulator facility

2002 ◽  
Vol 20 (3) ◽  
pp. 455-458 ◽  
Author(s):  
N.D. MESCHERYAKOV ◽  
N.N. ALEXEEV ◽  
A.N. BALABAEV ◽  
S.A. KONDRASHEV ◽  
K.V. KONYUKOV ◽  
...  
Keyword(s):  
High Voltage ◽  
Ion Beam ◽  
Laser Cavity ◽  
Heavy Ion ◽  
Ion Source ◽  
Target Chamber ◽  
Laser Ion Source ◽  
State Institute ◽  
Energy Beam ◽  
Term Operation

In this article, we present the results of the laser ion source (LIS) for heavy ion high charge state Institute of Theoretical and Experimental Physics terawatt accumulator facility. This LIS is a duty ion source of C+4 for the injector. The main parameters of CO2 laser, vacuum target chamber, ion beam high voltage extraction system, and low energy beam transport line are shown. The stability of the LIS operation is discussed and measured ion beam parameters (ion current, pulse duration, emittance) for different charge states are presented. After the upgrading of the laser cavity, high voltage capacitors, and spark gaps and the installation of a new catalyst regenerator system, the CO2 laser became much more stable and allows long term operation. LIS works about 1 × 106 shots without intervention.

scholarly journals High voltage negative ion beam injector for tandem accelerator

2018 ◽  
Author(s):  
A. Sanin ◽  
G. Abdrashitov ◽  
Yu. Belchenko ◽  
A. Ivanov ◽  
A. Gmyrya ◽  
...  
Keyword(s):  
High Voltage ◽  
Ion Beam ◽  
Negative Ion ◽  
Tandem Accelerator

Wood Pretreatment Protocols and Measurement of Tree-Ring Standards at the Oxford Radiocarbon Accelerator Unit (ORAU)

Radiocarbon ◽  
2014 ◽  
Vol 56 (02) ◽  
pp. 709-715 ◽  
Author(s):  
Richard A Staff ◽  
Linda Reynard ◽  
Fiona Brock ◽  
Christopher Bronk Ramsey
Keyword(s):  
Tree Ring ◽  
High Voltage ◽  
Purification Method ◽  
On Line ◽  
High Voltage Engineering

This article presents the pretreatment protocols for wood samples processed at the Oxford Radiocarbon Accelerator Unit (ORAU), including recent implementation of a purification method to α-cellulose for non-routine samples. We examine the long-term reproducibility of measurement on wood samples at ORAU through the >100014C determinations made on known-age tree-ring standards processed in each AMS wheel since our present High Voltage Engineering Europa (HVEE) AMS system came on-line in September 2002. A discussion of background measurements is also provided.

scholarly journals Accelerator Mass Spectrometry at High Voltage Engineering Europa (HVEE)

Radiocarbon ◽  
2001 ◽  
Vol 43 (2A) ◽  
pp. 149-156 ◽  
Author(s):  
A Gottdang ◽  
M Klein ◽  
D J W Mous
Keyword(s):  
Mass Spectrometry ◽  
High Voltage ◽  
Accelerator Mass Spectrometry ◽  
Ion Beam ◽  
Ion Source ◽  
Long Term Stability ◽  
Routine Basis ◽  
Analysis System ◽  
Under Construction ◽  
High Voltage Engineering

In recent years, High Voltage Engineering Europa (HVEE) has demonstrated its capability of developing and installing turnkey accelerator mass spectrometry (AMS) equipment for the analysis of, among others, 14C and 129I. Five 3MV systems using sequential and/or simultaneous injection are operational in the field today, and they have shown excellent long-term stability providing high-precision analyses on a routine basis. Another three AMS systems are in production. It is projected that for the time being, AMS will continue to broaden its field of applications; a saturation of the market of AMS facilities is not expected in the near future.To meet the specific demands of the biomedical research community, we have developed an extreme compact 14C AMS system comprising a hybrid ion source capable of handling both graphite as well as CO2 samples. The source is optimized for easy maintenance, accommodates up to 200 samples, and can be implemented in any other AMS system.More recently, HVEE has initiated the development of an AMS system capable of detecting, among others, 36Cl and 41Ca. The design will include a HVEE 5MV Tandetron™. The accelerator is currently under construction as part of an ion beam analysis system for the Universidad Autonoma de Madrid (Spain).

Sign in / Sign up

Export Citation Format

Share Document