10/31/2009 1 Light Scattering Light Scattering Light Scattering Light Scattering Hardware…. Etc. Hardware…. Etc. Eben S. Cross Eben S. Cross Eben S. Cross Eben S. Cross AMS User’s Meeting AMS User’s Meeting October 31, 2009 October 31, 2009 Toronto Toronto
9
Embed
Light Scattering Hardware…. Etc. - CIREScires.colorado.edu/jimenez-group/UsrMtgs/UsersMtg10/USERS_MEE… · 10/31/2009 1 Light Scattering Hardware…. Etc. Eben S. Cross AMS User’s
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
10/31/2009
1
Light ScatteringLight ScatteringLight ScatteringLight ScatteringHardware…. Etc.Hardware…. Etc.
Eben S. CrossEben S. CrossEben S. CrossEben S. Cross
AMS User’s MeetingAMS User’s Meeting
October 31, 2009October 31, 2009
TorontoToronto
10/31/2009
2
2.0
1.5
MS
"
Eben System
AMS‐Patience Plot
“Your job is awesome”
1.0
0.5Pat
ienc
e to
war
d an
ythi
ng "A
M Made a romantic dinner.
Went apple picking insteadof working on User’s meeting presentation.
Told her I was going to be in Renoon her birthday.
“Your job is neat”
0.0
35030025020015010050
Days
Left for AAAR and User’s meeting “I hate your job”
Reno, 2007
2.0
1.5
MS
"
Eben System Eben's Previous Relationship System
AMS‐Patience Plot
“Your job is awesome”
Told Meridith that I was going to auction off random AMS parts to raise $$ for the wedding…
1.0
0.5Pat
ienc
e to
war
d an
ythi
ng "A
M
“Your job is neat”
0.0
35030025020015010050
Days
“I hate your job”
~ Jan. 9, 2009
Reno, 2007
10/31/2009
3
Planning a Wedding Planning an AMS Field Deployment
Eben S. CrossEben S. CrossEben S. CrossEben S. Cross
AMS User’s MeetingAMS User’s Meeting
October 31, 2009October 31, 2009
TorontoToronto
10/31/2009
4
Light Scatter (LS) Acquisition using an External Trigger Circuit for ToF AMS Systems
543
6420
NI_StopTrigger
Vref
Chopper pulse
LS pulse
-1.0-0.8-0.6-0.4-0.20.00.2
Vol
ts
0.0060.0040.0020.000-0.002
Time(s)
3210
Comparator/Trigger Event Latched Trigger with Chopper Reset Summed Chopper+LS
DIO4 reset
DIO3 reads red trace
Time(s)
• HARDWARE: MUCH IMPROVED sampling duty cycle for single particles (>80% of all chopper cycles sampled)• SOFTWARE: Single Particle Processing – Squirrel Functionality… it’s almost there!
EBEN’S SUNDAY TALK• MANUSCRIPT: Results from initial Mexico City deployment FINALLY PUBLISHED in ACP! TIM’S SATURDAY TALK
Ricor MicroStarTM Cryopumpfast pump out / background reduction in ARI Aerosol Mass
Spectrometer ionizer chamber
http://www.ricor.com
• Cryoshiled surrounds ionizer• Mounted between P5 (V301) and chamber
•1000 Ls-1 pumping speed for water• 17 kg (38 lbs)• 400 Watts start-up at 50 VDC
(~200W normal load) Slide stolen from J. T. Jayne circa 2003Cryopump stolen from J. T. Jayne, 2009
10/31/2009
5
Cold Finger
ARI Lab AIR. AMS Valve OPEN. Initial Cool Down of Cold Finger Pumping overnight – after being vented for ~ 2 days
10/31/2009
6
Later on that Evening…. ARI Lab AIR.
786 single particles saved/20 mins of ‘ambient’ sampling!ambient sampling!
Later on that Evening…. ARI Lab AIR. EBEN’S LS ANALYSIS TALK ON SUNDAY
10/31/2009
7
ARI Lab AIR.
~24,000 single particles saved/15 hours of ‘ARI AIR’ sampling!
Warming Cold Finger Back up: ARI Lab AIR.
10/31/2009
8
Cool DOWN (2) After transport to BOSTON COLLEGE
AMBIENT – BOSTON COLLEGE COOL DOWN #2EBEN’S LS ANALYSIS TALK ON SUNDAY
10/31/2009
9
A
BOSTON COLLEGE GAMEDAY SAMPLINGEBEN’S LS ANALYSIS TALK ON SUNDAY