[INSTRM-1790] Set the ring lamp and FF screen logic Created: 15/Nov/22 Updated: 15/Jul/23 |
|
| Status: | In Progress |
| Project: | Instrument control development |
| Component/s: | ics_gen2Actor |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Task | Priority: | Normal |
| Reporter: | cloomis | Assignee: | cloomis |
| Resolution: | Unresolved | Votes: | 0 |
| Labels: | EngRun | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Description |
|
I have been waiting for this run to figure a couple of Subaru procedures out: The FF lamps are almost always kept in a few positions:
And the ring lamps are fully on for us when the measured voltages of all four lamps match the commanded voltages and are > 100V (the lamps are turned on in sequence, and first set to 100V before being adjusted to the final voltage.) The status bits do not seem to change. |
| Comments |
| Comment by cloomis [ 16/Apr/23 ] |
|
Went the other way: set W_AITQTH to T when essentially any lamp is likely to be on (any > 50V). Yes, I should have discussed the decision. The four underlying TFF*V cards can be used if the flux is low, but given that control is entirely out of PFS's hands and will be bracketing our exposures I am guessing that "quartz lamps are on but faint and changing" is closer to what we want W_AITQTH to signal than "quartz lamps are correct and stable". Also to signal possible trouble on the NIR arms. More cards? The other reason is that the ring lamps cannot be used as is with the NIR cameras. So we might well want to investigate (much) lower levels, and I thought we would want W_AITQTH to be T at fainter levels. |
| Comment by arnaud.lefur [ 18/May/23 ] |
|
Is it still in progress or already merged ? price is reporting that W_AITQTH = 0 for 91427m3, and there is flux on this image. |