This is a follow up of the last test made changing the power with INJ in golden state.

Today, we tested the power change with the ITF locked in Carm null 1f, that is with also the SSFS loop enable.

At 17.08UTC we applied a first small power step, ~ 500mW, visible on IMC_TRA_DC channel (fig. 1 and 2). The ITF kept the lock, so we applied a bigger step, without any trouble.

After few minutes of quiet time, we reset the default values and continued the lock acquisition, however the ITF unlocked before reaching LN1.

We profited of the next lock acquisition to test it with the PSTAB loop open. Everything went well, and we re-engaged the PSTAB once in CARM NULL 1f.

We left the ITF locked in LN3_SQZ.