nicolas.smith@LIGO.ORG - posted 12:59, Tuesday 30 June 2015 - last comment - 17:10, Tuesday 30 June 2015(19383)
H1LSC model changes for MICH Freeze
(nicolas kiwamu jeff)
We will try to implement the MICH freeze technique soon. In order to facilitate this, we made the necessary changes to the LSC frontend model. The ISI model changes were already done by Arnaud a few weeks ago.
We have compiled, installed, and restarted the new model.
It should be noted that the new model will change some of the labeling of LSC input matrix elements. Kiwamu is aware of this and plans to update the Guardian automation code to reflect this.
The detailed changes are below:
We updated the lsc library part from the SVN which includes the new signal paths for MICH freeze feedforward.
The input terminals of the lsc library part had changed, this required shifting many signals to account for a new signal being fed into inputs 10 and 12.
We added the IPC receivers for the signals from the ISI models. These feed directly into inputs on the library model.
WP5319
In addition to the update of the LSC frontend model, we also updated the h1omc model in order to make it to the latest (see LLO alog 18707 for detail). In order to do so, we downloaded the lateset common omc and lscomc models from the svn and compiled h1omc with the latest common models in place. We also moved the ETM suminng junctions from the inside of the lsc block to the top level as was done in LLO. For now the ITM outputs are terminated as we do not have IPC senders for them.
As Nic mentioned above, we had to change a few guardian codes such that they are adapted to the new LSC input matrix. I edited the following codes:
I basically replaced all the old matrix (LSC-ASPD_DOF) by the old style PD_DOF matrix in all the above three codes. We had a chance to test ALIGO_IFO and set it to the MICH_DARK state, which seems to be working fine so far. I did not get a chance to test any other states of ALIGN_IFO or the reset of the two codes yet.