Re: [chemclipse-dev] Which data model can store the raw data from TOF ma

[Philip Wenig <philip.wenig@xxxxxxxxxxxxx>]

Hi Trig,

the easiest way would be if we change milliseconds to nanoseconds internally. Honestly, I have designed the scan model to be able to cover a wide range of possibilities. I even thought that milliseconds for retention time is a bit exaggerated. I never thought that it could go far beyond that :-).

The max possible retention time range for chromatograms stored in nanoseconds would be:

2^32 / 2 / 60000000 ~ 35.7 hours

That should be sufficient in any case. I don't think that one likes to evaluate a chromatogram of such a long recording ... despite of the fact that it will be hard to import Terabytes of data.

Let me think about a way how to refactor the code.

Any other thoughts?


Best,
Philip

Am 28.06.2016 um 14:14 schrieb Trig Chen:

We are building our own TOF mass spectrometer and acquiring raw data using a ADC acquisition card with 1GHz acquisition frequency. When acquiring 20us, we got 20000 points of data. The value of point is signal intensity and one point in 1 nanosecond. The ScanMSD model in OpenChrom store m/z and intensity, and ScanCSD model store time and intensity. 

The problem is ScanCSD only accepts integer value millisecond. 

So, which model can I store time of nanosecond and intensity?

Best regards,

Trig

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