Changes between Version 1 and Version 2 of Meetings/Grimm240412


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Timestamp:
Apr 25, 2012 12:44:52 PM (7 years ago)
Author:
mark1
Comment:

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  • Meetings/Grimm240412

    v1 v2  
    11= Notes taken from meeting with GRIMM @ ARSF Gloucester on 24 / 04 / 2012 =
    22
    3 Present at meeting:
    4  ARSF ( Gary, Dave, Phil, James, Mark1)
    5  FAAM (Jamie)
     3Present at meeting:\\
     4 ARSF ( Gary, Dave, Phil, James, Mark1) \\
     5 FAAM (Jamie) \\
    66 GRIMM (Wolfgang - from Germany, Vimal - from UK office)
    77
     
    1414There are 4 pressure sensors in the machine to monitor the pressure before/after critical orifices and pumps.
    1515
     16There are 32 channels (bins) of different particle size.
     17
    1618Can be operated at different time resolutions:
    1719
    18 1 sec, 2 sec, 3 sec - Only 16 channels are used: either > 0.25 um to 2.5 um or >2.5um to 32 um. No multiplexing
    19 6 sec - uses multiplexing: 1 second to measure first (smallest particles) 16 channels, 5 seconds to measure the last 16 channels. The time difference is because there are fewer particles at the larger sizes so you get better stats by measuring for longer.
     201 sec, 2 sec, 3 sec - Only 16 channels are used: either > 0.25 um to 2.5 um or >2.5um to 32 um. No multiplexing\\
     216 sec - uses multiplexing: 1 second to measure first (smallest particles) 16 channels, 5 seconds to measure the last 16 channels. The time difference is because there are fewer particles at the larger sizes so you get better stats by measuring for longer. \\
    20221, 5, 10, 15, 30, 60 minutes
    2123
     
    3436K line:  DC/v DC_d DCc_h C0_h C0_d Ilalo Ilahi
    3537
    36  DC_d dark current (laser off)
    37  DC_h dark current (laser on)
     38 DC_d dark current (laser off)\\
     39 DC_h dark current (laser on)\\
    3840 C0_h / C0_d are count numbers and should be 0 (or less than 5ish) If higher contact GRIMM and ask what it may mean.
    3941