Following Joe's work at LLO on the ASCIMC model (see LLO alog 14538), I recompiled and restarted the h1ascimc model with the latest master library block. This was under WP#4864.
Here are the major changes that one might pay attention:
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The trigger signal changed.
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We used to use IMC-TRANS (which is a PD on IOT2L) for activating the ASC loops.
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Now it uses MC4_TRANS_SUM instead.
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Confusingly, the LSC trigger still uses IMC-TRANS.
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Normalization of the trigger signal
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In the triggering process, MC4_TRANS_SUM is normalized by the PSL power, IMC-PWR_IN. Sp pay attention to the hidden parameter.
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I temporarily put an artificial offset in IMC-PWR_IN (see the attached screen shot below)
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Since IMC-PWR_IN is not reading sensible values, I put an offset of 10 counts and disabled the input for now in order to simulate an ideal situation where we have the correct readout of 10 W.
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We should fix this issue.
![](https://alog.ligo-wa.caltech.edu/aLOG/uploads/14098_20140923143632_IMC_20140923.png)
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I reset the trigger threshold values (see the attached screen shot below)
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in order to adapt it to the new trigger signal.
![](https://alog.ligo-wa.caltech.edu/aLOG/uploads/14098_20140923143858_trig_ASCIMC_20140923.png)
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The input matrix expanded
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The ASC input matrix now takes 6 signals in total as the DC signals of WFS_A and _B are newly added.
![](https://alog.ligo-wa.caltech.edu/aLOG/uploads/14098_20140923144137_ascimc_sensingmat_20140923.png)