A Tuning Method for Electrically Compensated Ion Cyclotron Resonance Mass Spectrometer Traps

Adam M. Brustkern; Don L. Rempel; Michael L. Gross

doi:10.1016/j.jasms.2009.11.010

A Tuning Method for Electrically Compensated Ion Cyclotron Resonance Mass Spectrometer Traps

Adam M. Brustkern, Don L. Rempel, Michael L. Gross

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

We describe a method for tuning electrically compensated ion cyclotron resonance (ICR) traps by tracking the observed cyclotron frequency of an ion cloud at different oscillation mode amplitudes. Although we have used this method to tune the compensation voltages of a custom-built electrically compensated trap, the approach is applicable to other designs that incorporate electrical compensation. To evaluate the effectiveness of tuning, we examined the frequency shift as a function of cyclotron orbit size at different z-mode oscillation amplitudes. The cyclotron frequencies varied initially by ∼12 ppm for ions with low z-mode oscillation amplitudes compared with those with high z-mode amplitudes. This frequency difference decreased to ∼1 ppm by one iteration of trap tuning.

Original language	English
Pages (from-to)	451-454
Number of pages	4
Journal	Journal of the American Society for Mass Spectrometry
Volume	21
Issue number	3
DOIs	https://doi.org/10.1016/j.jasms.2009.11.010
State	Published - Mar 2010

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title = "A Tuning Method for Electrically Compensated Ion Cyclotron Resonance Mass Spectrometer Traps",

abstract = "We describe a method for tuning electrically compensated ion cyclotron resonance (ICR) traps by tracking the observed cyclotron frequency of an ion cloud at different oscillation mode amplitudes. Although we have used this method to tune the compensation voltages of a custom-built electrically compensated trap, the approach is applicable to other designs that incorporate electrical compensation. To evaluate the effectiveness of tuning, we examined the frequency shift as a function of cyclotron orbit size at different z-mode oscillation amplitudes. The cyclotron frequencies varied initially by ∼12 ppm for ions with low z-mode oscillation amplitudes compared with those with high z-mode amplitudes. This frequency difference decreased to ∼1 ppm by one iteration of trap tuning.",

author = "Brustkern, {Adam M.} and Rempel, {Don L.} and Gross, {Michael L.}",

note = "Funding Information: The authors acknowledge support for this research by the National Centers for Research Resources of the NIH (grant 2P41RR000954 ). They thank Dr. Robert McIver for his help in the implementation of the compensated trap.",

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T1 - A Tuning Method for Electrically Compensated Ion Cyclotron Resonance Mass Spectrometer Traps

AU - Brustkern, Adam M.

AU - Rempel, Don L.

AU - Gross, Michael L.

N1 - Funding Information: The authors acknowledge support for this research by the National Centers for Research Resources of the NIH (grant 2P41RR000954 ). They thank Dr. Robert McIver for his help in the implementation of the compensated trap.

PY - 2010/3

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N2 - We describe a method for tuning electrically compensated ion cyclotron resonance (ICR) traps by tracking the observed cyclotron frequency of an ion cloud at different oscillation mode amplitudes. Although we have used this method to tune the compensation voltages of a custom-built electrically compensated trap, the approach is applicable to other designs that incorporate electrical compensation. To evaluate the effectiveness of tuning, we examined the frequency shift as a function of cyclotron orbit size at different z-mode oscillation amplitudes. The cyclotron frequencies varied initially by ∼12 ppm for ions with low z-mode oscillation amplitudes compared with those with high z-mode amplitudes. This frequency difference decreased to ∼1 ppm by one iteration of trap tuning.

AB - We describe a method for tuning electrically compensated ion cyclotron resonance (ICR) traps by tracking the observed cyclotron frequency of an ion cloud at different oscillation mode amplitudes. Although we have used this method to tune the compensation voltages of a custom-built electrically compensated trap, the approach is applicable to other designs that incorporate electrical compensation. To evaluate the effectiveness of tuning, we examined the frequency shift as a function of cyclotron orbit size at different z-mode oscillation amplitudes. The cyclotron frequencies varied initially by ∼12 ppm for ions with low z-mode oscillation amplitudes compared with those with high z-mode amplitudes. This frequency difference decreased to ∼1 ppm by one iteration of trap tuning.

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A Tuning Method for Electrically Compensated Ion Cyclotron Resonance Mass Spectrometer Traps

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