Here we're listing ideas for undergrad projects of the future along with a few sentence description. Projects need not be only 40m based; can include West Bridge.

PEM Web Page

Copy over the source from the LIGO PEM page (http://pem.ligo.org/) and edit it for use at the 40m lab.

Mode Cleaner Resonance Tracking

to measure absorption. Use HOMs or acoustic modes

Doubling Crystal digital controls

• Interface the ovens to the DAQ
• make a screen
• auto-tune the PID loops
• monitor the ratio of IR / green power to see if the builtin temp sensor is a good one

Temperature Stabilization of the Seismometers

Physical_Environment_Monitoring/Seismometers

AcroMag Development

1. NPRO
2. Slow controls of the SUS/LSC
3. eventually some of the Vacuum stuff
4. Control instruments through serial interface

Summary Pages for DetChar

Scattering

Do things with ringdowns, GigE cameras, etc. to understand scatter.

Dual wavelength scatter comparison

Seismic hot map

Seismic State Classifier Using Deep Learning

Revive Mashas Neural Net thing but using more modern stuff and make it display in the control room so that we know what's going on.

1. What states to identify?
2. What time scales?
3. What about noisy seismometer?
4. Classifier for beyond seismic? We could use this for OSEMs and QPDs and PSL stuff to figure out laser death.

Bounce, Roll, Violin mode tracker

Big photo maker for optical tables

Linear Rail + Digital Video -> Frame processing to make a single big flat image of the entire table.

Installation of the GigE cameras

BASLER Cameras

HDR Images from GigE Cameras

LUNGO Site Selection Using Satellite Topography Data

We would like to build a 10-40 km detector in a new site. In order to reduce the effects from gravity gradients and wind, we want the BS and ETM buildings to be inside of a mesa, plateau, or small mountain.

Use the new topo data from Surendra at IIT-Hyderabad to find this using some pattern recognition or something. List here the other criteria for site selection: seismic, airports, roads, etc.

C.Ri.Me. experiment: automatic prediction of mode frequencies

Based on the measurement of the first couple of modes, write some software that predicts (based on fitted COMSOL models and/or extrapolation) where the next modes should be. This can be useful both during the measurement time (to optimize the excitation of low modes) or during the analysis, to improve the identification of the modes

C.Ri.Me. experiment: effect of annealing

Measure a substrate many time with different annealing schedules, to determine how the Q changes

C.Ri.Me. experiment: fit measured frequencies to disk parameters

Fit the measured eigenmodes to a COMSOL model, changing diameter, thickness, flat size, etc.

Fourier analysis of high speed images with GigE camera

Run at GigE camera at high speed (>1024Hz) and analyze the high speed images (of any object) in the frequency domain looking for regions of excess noise and correlations with interferometer noise.

https://www.ted.com/talks/michael_rubinstein_see_invisible_motion_hear_silent_sounds_cool_creepy_we_can_t_decide?language=en

Summary pages

Learned classifiers for overall seismic states or other IFO conditions included in summary pages

NN/Machine Learning

Classifying lockloss @ 40m

Scatter Characterization

Make HDR camera images. Compare measurements to numerical simulations of scatter models.

ALS Yend steering mirrors

Set up PZT steering for Yend green laser. Optimize feedback loop (ML techniques?)

DAFI

Continue development of software tools, particularly those related to low-latency frequency shifting/frequency warping...

RoC control of ETMs by heating

The goal would be to model, design and implement a heating system for our ETMs which can potentially correct for the RoC mismatch between ETMX and ETMY, reducing the contrast defect.

Surface map of mirrors using Chris Mueller technique

As detailed in Chris Mueller's thesis, it is possible to map the HOM resonances in a cavity by breaking the orthogonality of the HG modes by the simple expedient of sticking in a dental tooth-scraper in the beam.

ISS design and implementation

Now that the AOM has been installed in the beam path on the PSL table, design and implementation of an Intensity Stabilization Servo can build on the work done by Chas et. al.