[Psidev-ms-dev] RFC: Collision cell exit potential in CV ?

[Steffen N. <sne...@ip...>]

Hi,

we're generating some examples of TraML files from methods
that were developed on a QTrap 3200.

One of the parameters is the "CXP, Collision Cell Exit Potential".
We couldn't find a corresponding CV term for that.

Question: Did we miss anything ? Should one be created ?

I have almost no experience with Traps, but I could imagine
this should be a child of MS:1000510 (precursor activation attribute).
Does the following make sense:

	[Term]
	id: MS:1000876
	name: Collision cell exit potential
	def: "Potential difference between Q2 and Q3 in a triple quadrupole instrument in volts." [PSI:MS]	
	xref: value-type:xsd\:float "The allowed value-type for this CV term."
	is_a: MS:1000510 ! precursor activation attribute
	relationship: has_units UO:0000218 ! volt
	synonym: "CXP" EXACT []

Is this restricted to triple quads / linear ion traps ? 
Or is there something equivalent for QqTOF ? Then the def:
above should be modified "between Q2 and the following instrument compartment..."

There is an issue in the tracker for skyline:
https://brendanx-uw1.gs.washington.edu/labkey/issues/home/issues/details.view?issueId=122

Yours,
Steffen



-- 
IPB Halle                    AG Massenspektrometrie & Bioinformatik
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