GQuEST Cavity Optics Run1 S2400001

These are listed with a LIGO DCC number of T2300191 (hosted at https://dcc.ligo.org/LIGO-T2300191). This page is to document where each one is installed and its history (with log posts attached).

These were Caltech PO 6A-S605380

M1 is Five-Nines Run# V2-1452C, V1-1455

M2-M4 is Fine-Nines Run# V2-1454C, V2-1455

Attached are the datasheets and original specification: Cavity_Mirrors-T2300191-v2.pdf

T2300191_M1.pdf, T2300191_M2M3M4.pdf

When you install these mirrors you MUST:

1. Log the changes, including which optics and serial numbers were used and installed. Link the log to this page

2. Update this page, logging the location of the optics (which cavity, which room the cavity is in)

3. Label the optics on or near the cavity. The label must include the DCC Number T2300191, and the optic type (M1-M4) and its serial number. It should indicate that the optic is super-polished. It should also include what the tranmissions are (can be on a separate label).

example line1: T2300191-M1-SN01 Superoptic

example line2: T_1550nm = 883ppm and T_775nm=HR.

- these optics do not have their SN on the barrel, so the label must stay with the optic unless it physically cannot.

Update 10/24/2024: These are now located in the lista cabinet, bottom drawer, in B111B. See https://mccullerlab.com/logs/lab/index.php?callRep=11935. -Torrey

Update 7/24/2025: These are now in the B111A south clean room. Installing LFC optics. See https://outline.mccullerlab.com/doc/super-optics-for-lfc-VYiXUMFej7

Update 8/29/2025: The optics are back in the lista cabinet, bottom drawer, in B111B due to fear of damaging the coating from the room lights as per a discussion with Lee and Rana -Daniel

2 caltech property tags added on 10/07/2025 to OFC 1 and OFC 2 or 3:

OFC1: C0E000083618

OFC2 or 3: C0E000083635

Locations and History:

M1 is a flat mirror with T_1550nm = 883ppm and T_775nm=0ppm (HR).

M1-SN1:

In FCM1 position of first filter cavity.

M1-SN2:

In FCM2 position of first filter cavity.

M1-SN3:

In OFC2, M2 position

M1-SN4:

In OFC2, M1 position

M1-SN5:

In OFC3, M1 Position.

M1-SN6:

In OFC3, M2 position.

M1-SN7:

In LFC input coupler position.

M1-SN8:

LFC output coupler

M1-SN9:

In bag

M1-SN10:

In bag

M1-SN11:

In bag

M1-SN12:

In bag

M1-SN13:

In bag

M1-SN14:

In bag

M1-SN15:

In bag

M1-SN16:

In bag

M1-SN17:

In bag

M1-SN18:

In bag

M1-SN19:

In bag

M1-SN20:

In bag

M1-SN21:

In bag

M1-SN22:

In bag

M1-SN23:

In bag

M1-SN24:

In bag

M2

M2 is a flat mirror with T_1550nm = 0ppm (HR) and T_775nm=1%

M2-SN1:

In bag

M2-SN2:

In bag

M2-SN3:

In bag

M2-SN4:

In bag

M2-SN5:

In bag

M2-SN6:

In bag

M2-SN7:

In bag

M2-SN8:

In bag

M2-SN9:

In bag

M2-SN10:

In bag

M2-SN11:

In bag

M2-SN12:

In bag

M2-SN13:

In OFC2, Piezo Mirror.

M2-SN14:

Piezo mirror for OFC3, leelog 12092.

M2-SN15:

LFC M4 position

M2-SN16:

In first output filter cavity M3 slot.

https://mccullerlab.com/logs/lab/index.php?callRep=11572 https://mccullerlab.com/logs/lab/index.php?callRep=11574

M3

M3 is a PLCC mirror with 1.6m ROC and T_1550nm = 0ppm (HR) and T_775nm=1%

M3-SN17:

SN17 is now in FCM3 position on the first filter cavity.

M3-SN18:

In bag

M3-SN19:

In bag

M3-SN20:

In bag

M3-SN21:

In bag

M3-SN22:

In bag

M3-SN23:

In bag OFC3, leelog 12092.

M3-SN24:

In bag

M4

M4 is a PLCC mirror with 3m ROC and T_1550nm = 0ppm (HR) and T_775nm=1%

M4-SN25:

In bag

M4-SN26:

In bag

M4-SN27:

In bag

M4-SN28:

In bag

M4-SN29:

Curved optic for LFC.

M4-SN30:

In bag. Previously chosen for LFC curved optic. Returned to bag after multiple failed first contact cleanings.

M4-SN31:

In bag

M4-SN32:

In bag