LAAP-TOF - welcome | CIREScires.colorado.edu/jimenez-group/UsrMtgs/UsersMtg13/LAAP...LAAP-TOF AMS...

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1 AMS user meeting 2012 LAAP-TOF

Transcript of LAAP-TOF - welcome | CIREScires.colorado.edu/jimenez-group/UsrMtgs/UsersMtg13/LAAP...LAAP-TOF AMS...

Page 1: LAAP-TOF - welcome | CIREScires.colorado.edu/jimenez-group/UsrMtgs/UsersMtg13/LAAP...LAAP-TOF AMS Single particle spectra Time series of bulk spectra Combine single spectra to groups

1AMS user meeting 2012

LAAP-TOF

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2AMS user meeting 2012

Instrument

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3AMS user meeting 2012

Data sheet

Transmitted particles sizes: ~229*10-9 ft – 2.29*10-6 ft

Detected particle sizes: > 7.88*10-6''

Detection laser: λ = 443*10-9 yd, p = 0.074 ft lbf/s

Ionization laser: excimer laser, Ephoton

= 51814 cm-1, Epulse

= 23.9 mcal

Mass range : 0.9922amu/e to ~ 1984 amu/e (calculated)

Mass resolving power (fwhm): m / Δm = 600 -800 (@ m/z = 184)

Size: 25.9*10-18pc x 24.6*10-18pc x 24.6*10-18pc

Weight: ~ 21.16 st (4230 oz)

Electrical power: < 2390 BTU/h

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4AMS user meeting 2012

Transmitted particles sizes: ~70 nm – 700 nm

Detected particle sizes: > 200 nm

Detection laser: λ = 405 nm, p = 100 mW each.

Ionization laser: excimer laser, λ = 193 nm, Epulse

= 10 mJ

Mass range : 1 Th to ~ 2000 Th (calculated)

Mass resolving power (fwhm): m / Δm = 600 -800 (@ m/z = 184)

Size: 80 cm x 76 cm x 76 cm, (31.5'' x 30'' x 30'')

Weight: ~120 kg ( ~ 265 lb)

Electrical power: < 700W

Data sheet

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5AMS user meeting 2012

Spectra (oxalic acid)

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6AMS user meeting 2012

Spectra (Arizona test dust)

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7AMS user meeting 2012

New hardware

Detection laser (old version):

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8AMS user meeting 2012

New hardware

Detection laser:

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9AMS user meeting 2012

New DAQ card

SP Devices USB DAQ card :ADQ214

Dinamic range : 14 bit DAQ card Sampling rate : 800 MS

Page 10: LAAP-TOF - welcome | CIREScires.colorado.edu/jimenez-group/UsrMtgs/UsersMtg13/LAAP...LAAP-TOF AMS Single particle spectra Time series of bulk spectra Combine single spectra to groups

10AMS user meeting 2012

New DAQ card

SP Devices USB DAQ card :ADQ214

Dinamic range : 14 bit DAQ card Sampling rate : 800 MS

2 channels/ 400 MS each

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11AMS user meeting 2012

DAQ software

TOFDaq

TOFWerk AGThun, Switzerland

Output: hdf

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12AMS user meeting 2012

DAQ software

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13AMS user meeting 2012

DAQ software

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14AMS user meeting 2012

DAQ software

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15AMS user meeting 2012

Fuzzy clustering (cmeans algorithm)

Usually used for pattern recognition

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16AMS user meeting 2012

Fuzzy clustering (cmeans algorithm)

Jm=∑i=1N ∑ j=1

C uijm∥xi−C j∥

2Optimization of:

Usually used for pattern recognition

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17AMS user meeting 2012

Fuzzy clustering (cmeans algorithm)

Jm=∑i=1N ∑ j=1

C uijm∥xi−C j∥

2Optimization of:

uij=1

∑k=1

C

(∥x i−c j∥∥x i−ck∥)2m−1

c j=∑i=1

N

uijm xi

∑i=1

N

uijm

Iterating:

Usually used for pattern recognition

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18AMS user meeting 2012

Fuzzy clustering (cmeans algorithm)

Jm=∑i=1N ∑ j=1

C uijm∥xi−C j∥

2Optimization of:

uij=1

∑k=1

C

(∥x i−c j∥∥x i−ck∥)2m−1

c j=∑i=1

N

uijm xi

∑i=1

N

uijm

Iterating:

until: maxij {∣uijk +1−uijk∣}<ε

Usually used for pattern recognition

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19AMS user meeting 2012

Fuzzy clustering a 3 dimensional dataset

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20AMS user meeting 2012

2 Classes 3 Classes 5 Classes

Fuzzy clustering example

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21AMS user meeting 2012

2 Classes 3 Classes 5 Classes

Fuzzy clustering a 3 dimensional dataset

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22AMS user meeting 2012

2 Classes 3 Classes 5 Classes2 Classes 3 Classes 5 Classes

Fuzzy clustering a 3 dimensional dataset Fuzzy clustering a 3 dimensional dataset

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23AMS user meeting 2012

2 Classes 3 Classes 5 Classes

Fuzzy clustering a 3 dimensional dataset

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24AMS user meeting 2012

Classification of Arizona Test Dust

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25AMS user meeting 2012

Two slides for non-believers

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26AMS user meeting 2012

Two slides for non-believers

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27AMS user meeting 2012

LAAP-TOF

Data processing for the LAAP-TOF

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28AMS user meeting 2012

LAAP-TOF

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29AMS user meeting 2012

LAAP-TOF

Spectra

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30AMS user meeting 2012

LAAP-TOF

Spectra

Fuzzy algorithm (cmeans) /neural network (ART-2A)

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31AMS user meeting 2012

LAAP-TOF

Spectra

Fuzzy algorithm (cmeans) /neural network (ART-2A)

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32AMS user meeting 2012

AMS

Data processing for the AMS

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33AMS user meeting 2012

AMS

Data processing for the AMS

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34AMS user meeting 2012

AMS

Data processing for the AMS

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35AMS user meeting 2012

AMS dataData processing for the AMS

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36AMS user meeting 2012

AMS data

PMF

Data processing for the AMS

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37AMS user meeting 2012

metals

paper

glass

AMS data

PMFfactors

Data processing for the AMS

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38AMS user meeting 2012

metals cooking aersol

paper

glass

AMS data

PMFfactors

Data processing for the AMS

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39AMS user meeting 2012

Differences in data processing

AMSLAAP-TOF

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40AMS user meeting 2012

Differences in data processing

AMSLAAP-TOF

Single particle spectra Time series of bulk spectra

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41AMS user meeting 2012

Differences in data processing

AMSLAAP-TOF

Single particle spectra Time series of bulk spectra

Fuzzy clustering/ ART-2A PMF

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42AMS user meeting 2012

Differences in data processing

AMSLAAP-TOF

Single particle spectra Time series of bulk spectra

Combine single spectra to groupsto reduce complexity

Finding basic spectra in time series to seperate into „understandable“ spectra

Fuzzy clustering/ ART-2A PMF

Page 43: LAAP-TOF - welcome | CIREScires.colorado.edu/jimenez-group/UsrMtgs/UsersMtg13/LAAP...LAAP-TOF AMS Single particle spectra Time series of bulk spectra Combine single spectra to groups

43AMS user meeting 2012

Differences in data processing

AMSLAAP-TOF

Single particle spectra Time series of bulk spectra

Combine single spectra to groupsto reduce complexity

Finding basic spectra in time series to seperate into „understandable“ spectra

Fuzzy clustering/ ART-2A PMF

Page 44: LAAP-TOF - welcome | CIREScires.colorado.edu/jimenez-group/UsrMtgs/UsersMtg13/LAAP...LAAP-TOF AMS Single particle spectra Time series of bulk spectra Combine single spectra to groups

44AMS user meeting 2012

Important message

● You can identify particle origin by markers

biological particle

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45AMS user meeting 2012

Important message

● You can identify particle origin by markers

biological particle

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46AMS user meeting 2012

I still do not believein PMF.