Modeling the input optics using e2e
This presentation is the property of its rightful owner.
Sponsored Links
1 / 12

Modeling the Input Optics using E2E PowerPoint PPT Presentation


  • 92 Views
  • Uploaded on
  • Presentation posted in: General

Modeling the Input Optics using E2E. S. Yoshida, R. Dodda, T. Findley, K.Rogillio, and N. Jamal, Southeastern Louisiana University – Acknowledgement – LIGO Livingston Observatory, SURF 2004, NSF B. Bhawal, M. Evans, V. Sannibale, and H. Yamamoto. Objectives.

Download Presentation

Modeling the Input Optics using E2E

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Modeling the input optics using e2e

Modeling the Input Optics using E2E

S. Yoshida, R. Dodda, T. Findley, K.Rogillio, and N. Jamal,

Southeastern Louisiana University

– Acknowledgement –

LIGO Livingston Observatory, SURF 2004, NSF

B. Bhawal, M. Evans, V. Sannibale, and H. Yamamoto

LIGO Laboratory


Objectives

Objectives

A simulation model will be very convenient to study the impact of ground motion on the input optics, and on the input beam.

Therefore, we seek to do the following:

1. Build an IO box using E2E.

2. Integrate it with the Simligo.

3. Run simulation with realistic ground motion.

LIGO Laboratory


The process

The Process

1.Make an Small Optic Suspension (SOS) box, and validate it.

2.Use the SOS box to damp the motion of an optic when realistic ground motion is given.

3.Create a Mode Cleaner (MC) box, and try to lock the cavity when realistic ground motion is given to the Mode Cleaner optics.

4.Put all the optics ( MCs, SM, and MMTs ) in order, and create the Input Optic (IO) box.

5.Use the IO box in Simligo, and run the simulation for the entire detector.

LIGO Laboratory


Validating sos role of the table top motion

Validating SOS – Role of the Table Top motion

MC1 Yaw motion using two different schemes

Schematic diagram of the SOS box

with HAM motion as input

LIGO Laboratory


Calculating table s yaw

òò

ACCX

dt

dt

HAM table

Vibration

isolation

stacks

u

v

1

1

-

=

-

Table yaw =

(

)

{

ik

u

(

y

,

t

)

ik

v

(

x

,

t

)}

1

2

Accelerometer

2

y

x

2

w

±

w

±

(

)

(

)

i

t

k

y

i

t

k

x

=

=

u

(

y

,

t

)

A

e

,

v

(

x

,

t

)

A

e

1

1

2

2

0

0

=

=

w

q

=

w

-

k

k

k

(

)

i

k

(

){

u

(

y

,

t

)

v

(

x

,

t

)}

1

2

Calculating table’s Yaw

X in

Table u

HAM stack box

Table v

Y in

LIGO Laboratory


Dependence of k on frequency

Dependence of k on frequency

LIGO Laboratory


Calculating the suspension point motions of the optics

SM

(0.75, 0.45)

V

MMT1

(0.1, 0.4)

MC3

(0.75, -0.05)

U

(0, 0)

q

MMT3

(-0.8, 0.6)

MC1

(0.75, -0.25)

Calculating the suspension point motions of the optics

u(x,y)= U - yq

v(x,y)= V + xq

U: table’s center of mass translational motion

V: table’s center of mass translational motion

q: table’s yaw motion

LIGO Laboratory


Mc2 and mc3

MC2 and MC3

LIGO Laboratory


Mc1 pendular motion with local damping

MC1 pendular motion with local damping

LIGO Laboratory


Mode cleaner box preliminary results

Mode Cleaner box – Preliminary Results

LIGO Laboratory


Io box with the full detector box

IO box with the full Detector box

LIGO Laboratory


Conclusions

Conclusions

  • HAM table motion estimated from the ACC[XY] DAQ signal

  • MC1, MC3 local damping optimized

  • MC box constructed and being tested

  • Combination of MC and IFO in progress

LIGO Laboratory


  • Login