Vac - Chevron baffle work take place Monday contigent on proper valves come in tomorrow.

Sus - New acoustic mode damping device to be installed on ETMY after successful testing at LLO.

Sei - EX; H6 ISI remained locked. EY;EX;H6 HEPI remained locked. TJ reports guardian code is finished.

CDS ELE - POP90 issue still under investigation. Access System workers still working. ISS outer loop chassis to be installed either this afternoon or tomorrow.

PSL - Mode matching after 70W amp to drive back into the AOM/PMC beam path.

Bubba - Work Safely

Yesterday, Travis and Bubba's crew landed on a new VEA cleanroom configuration that allowed for better fiber welding equipment layout.  This involved moving the large install platform staircase out of the VEA and bringing down a slightly bigger 8x10' cleanroom.  We had to fix some panels, and rearrange the laser safety panels, and then the cleaning crew cleaned everything this morning.

Today, Travis and I worked on moving the extracted ETMX lower QUAD unit to the chamberside staging cleanroom using the duct jack, separated the main and reaction chains, then mounted the main half on it's weld trolley.  We removed all of the flags from PUM and UIM stages for safe keeping and re-install later.  We rolled the main chain into the welding room and left the reaction chain to be reworked for the AERM install soon.

The illuminators can now be remotely operated. Under tab SYS in sitemap, select illuminators to enable/disable each individual illuminator.

F. Clara, R. McCarthy, P. Thomas

3 dust monitors not responding this morning. LVEA6; PSL101; EX VEA2;

EX VEA 2 was reset at 16:15 and showing high .5u counts

Yesterday afternoon Terry and I made another attempt at aligning the beam from the OPO into HAM5, but we weren't able to find a beam returning to HAM6.  

We are able to see ZM2 from the east viewport on the north side of HAM5, and we can see the back side off the OFI kickoff mirror that the beam from ZM2 is supposed to hit.  We can tell that for some alignments our beam is hitting the optic holder for ZM2, but other than that we don't really know where the beam is.  

Today we will try with the HAM5 illuminator plugged in, and perhaps repeating the aperture alignment with more care. 

TITLE: 03/22 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
OUTGOING OPERATOR: None
CURRENT ENVIRONMENT:
    Wind: 5mph Gusts, 4mph 5min avg
    Primary useism: 0.08 μm/s
    Secondary useism: 0.26 μm/s
QUICK SUMMARY:

TITLE: 03/21 Day Shift: 15:00-23:00 UTC (08:00-16:00 PST), all times posted in UTC
STATE of H1: Planned Engineering
INCOMING OPERATOR: None
SHIFT SUMMARY:
LOG: Attached

As we plan to re-open BSC10 on Monday morning, I have restarted the clean rooms at E Y. The cleaning crew will do a cleaning of these tomorrow. 

Thanks for the time to the Squeezer crew!  And to CoreyG for coming back for more everyday.

Pulled the feedthru again and just sitting in the area seemed to change the readout.  I could do some minor manipulation of the cable and send it to the rail and put some pressure and a particular bend to get it to read reasonable values.  Wasn't going to mess with fixing and end up worrying how long it would last--just pulled it and replaced it.  New sensor worked fine and repeatably.

With three working vertical sensors, we got a new locked position, unlocked and quickly balanced the table.  Relocked and only saw a slight shift.  Did a payload consolidation and refloated.  ISI damped and once things were really settled down, Isolated the platform.  Left the ISI locked on stops so SQZ crew could climb around as needed.

CAVEATS:

Unable to milk the new cable through the copper braided shield, will need to disconnect from feed-thru to do that, once I find/get a milking fid.  Need smaller kinder peek zip ties--the big ones we have are just too hard on the small CPS cable which could be contributing to shorting.

I still need to as-build the payload--it is different than last Thursday now.

We need to get an Isolated spectra for closeout.

See photo below--I'll try to get some pointers on it (it is fuzzy too) but you can see where the zip ties a couple inches from the ends have damaged the insulation exposing the inner shield.  There is also some shield visible at the BNC connector--this is where I was able to make it work and fail repeatably.

I've looked at 3 consecutive glitches in TCSX QPD B using the _DQ channels added yesterday.  The shape of all 3 glitches are the same, and have a shape that looks very much like a step function (with a second glitch about 3/4 of the way through the first).  To the best that I can measure in dtt, the interval between the first and second glitch is 900.098 seconds, and between the second and third glitch is 900.577 seconds, so 15 minutes +/-0.5 seconds.  Attached plots of the three glitches show that the ISS and RIN signals also see the glitch.  Related alog 41076.

I installed the new TEC controller for the ALS SHG. The settings are attached in Figure 1. Ugf around 100mHz. 

Figure 2: Small step response.

Figure 3: Turn-on transient. It takes about 30 second to come to equilibrium.

Added the ZMs with their sliders and made them light blue. Shots attached.

The open/close logic of the HAM6 beam diverter has been inverted to account for the new layout.

WP 7426

Daniel, Dave, Filiberto, Patrick, Richard

Yesterday Filiberto and I connected a Beckhoff EP6002-0002 serial interface module to the h1ecatc1 slow controls network (Box 300 in the attached screenshot of the h1ecatc1 system manager). The module is located behind the TCS chillers on the mezzanine in the mechanical building and connected by CAT5 to a Beckhoff CU1128 EtherCAT hub in the bier garten. It is currently powered from a 24V power supply installed in the TCS rack (also supplying power for a safety relay). Filiberto connected the first RS232 port on this terminal to the serial port of the TCSX chiller and the second RS232 port on this terminal to the serial port of the TCSY chiller. I then modified the settings on each of the chillers to enable RS232 serial communication at 9600 baud. I added the terminal to the h1ecatc1 system manager (initially in the wrong location) and updated PLC3 to run the code I wrote for serial readout/control (Chiller.lib). I have not yet made a standalone MEDM screen, but there is an auto-generated one available from the sitemap (SYS -> EtherCAT overview -> H1 C1 PLC3 -> Tcs -> Itmx or Itmy -> Chiller (see second screenshot)). Dave has added the new channels to the DAQ.

To do:

- If an error is reported from the serial code, it does not appear to propagate up to the top EtherCAT overview screen.
- Test powering on/off the chiller from the new interface. Writing 0 and then 1 to H1:TCS-ITMX_CHILLER_POWER_REQ/H1:TCS-ITMY_CHILLER_POWER_REQ should turn the respective chiller on. Writing 0 and then 2 should turn it off.
- Create a dedicated medm screen.
- Set the precision fields in the PLC code.
- Mount the EP6002-0002 module in the rack and make dedicated serial cables (current ones use screw terminals).

FAMIS6567

Added 70mL to the cyrstal chiller.

FAMIS6942

The only thing that the two scripts reported is:

ETMX ISI high freq noise is high.

h1tw0 install

Jonathan, Carlos:

The new h1tw0 was connected to the DAQ 10GE switch and started.

EY weather station restart

Jeff B, Dave:

Squeezer front end code

Sheila:

New h1omc, h1sqz and h1sqzwfs models were installed.

New Guardian Nodes:

TJ:

DAQ Restart

For:

    h1sqz and h1sqzwfs code change

    h1ecatc1plc3, h1ecatc1plc4 new channels

    H1EDCU_GRD.ini 

   additional h1tcscs DQ channels

Terry, Arijit, Sheila, Daneil

We started by using the scanning OPO to align the transmitted red beam through the two apertures on HAM6 (we mechanically moved ZM1 in yaw but not pitch) to the temporary DC diode we have installed in homodyne path. We scanned the OPO and saw that our seed beam wasn't well aligned to the OPO.  We adjusted pitch on the 1064 collimator, and a small yaw adjustment.  We hadjusted the TEC temperature to roughly align the red and green resonances (for the current crystal position).  Daniel helped us get the OPO locking and we were able to see the amplification and deamplification of our seed beam. We didn't try to optimize the temperature or crystal position yet.  We are not scanning the seed phase but the ambient excitation is large enough that it is scanning very quickly on its own (purge air is rather high and the table is locked). 

With this fairly bright red beam generated by the squeezer we removed the septum window protector and looked for a beam returning from HAM5, but see nothing.  Daniel and Arjiti added excitations SRM, but we still didn't see anything, so we decided to leave excitations running overnight on SRM and ZM2 and look in the morning at AS QPDs to see if the beam hits them.  We have left the LVEA in laser hazard for this reason, and left the two soft covers with a small opening for the green beam to reach SQZT6.  

If we see nothing overnight we will try to taking a look through viewpoints on HAM5 tomorrow.