Differences between revisions 1 and 6 (spanning 5 versions)
⇤ ← Revision 1 as of 2021-04-08 15:40:14 →
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← Revision 6 as of 2021-04-12 13:33:25 → ⇥
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Editor: mie.ueda
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Deletions are marked like this. Additions are marked like this.
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== Interferometer related == == Main Interferometer related ==
Line 9: Line 9:
== Cryogenic related == == Cryogenics related ==
=== Thermal Noise ===
 * Mechanical Q measurement (sapphire fiber, blade spring, bonding, coatings, ...)
 * Evaluation of sapphire suspension thermal noise
 * Evaluation of thermal noise of integrated cryo-payload
 * Design of new sapphire blade spring
 * Measurement of violin mode of sapphire suspension fibers and their subtraction from data

=== Cryogenics ===
 * Development of high-sensitivity local displacement sensor at low temperature
 * Development of frosting removal on mirror by using CO2 laser or heater
 * Evaluation of low-magnetism black-coating (optical absorption at 1064nm ...)
 * Optical absorption measurement of sapphire mirror at low temperature
 * Development of non-contact temperature measurement method of mirror

== Physical Environment Monitoring related ==
===　Underground environment evaluation　===
 * New environmental monitors
 * Seismometer analysis
 * Magnetometer analysis
 * Microphone analysis
 * Newtonian noise evaluation

=== Interferometer noise evaluation ===
 * New environmental monitors
 * Power line monitor, GND survey
 * Correlation/coherent analysis (Close to commissioning)
 * Glitch, line noise evaluation (Close to DetChar)
 * Feedforward, offline noise subtraction
 * PEM injection test

== VIS（Vibration Isolation System）==
=== Sensor Development===
 * Development of new local sensor with high-sensitivity, wide-range and cryogenic use, replaced from OSEM and photo-sensor
 * Development of new local sensor by using optical comb technology
 * Development of inertial sensor (seismometer, accelerometer)

=== Performance Improvement ===
 * Optimization of control, development of active filter
 * Control of low frequency range by using GIF
 * Improvement of lower frequency performance of IP
 * Development of light and easy maintenance GAS filter


== Calibration related ==
=== DAC/CAL (Sftware) ===
 * Timing correction
 * Line-noise subtraction
 * Optimization of avoidance method of dynamic range problem
 * Improvement of self-diagnosis of pipe-line
 * Improvement of interface of pipe-line, filter, injection and so on

=== Commissioning/CAL (Hardware)===
 * PCAL
 * Higher performance of calibration of integrating sphere (5% -> <1%)
 * Mitigation of scattered light(in O4)
 * Stabilization of Pcal laser
 * Correction of temperature dependence of integrating sphere
 * Evaluation of integrating sphere like injection angle of laser and opening size (in O5)
 * Development of Gcal

== Data Management related ==

== Input & Output Optics related ==

== Laser related ==

== Auxiliary Optics related ==

== Digital System related ==

== Detector Characterization related ==

== Mirror related ==

Possible research topics for graduate students and postdocs

Contents

  1. Possible research topics for graduate students and postdocs
    1. Main Interferometer related
    2. Vibration isolation related
    3. Cryogenics related
      1. Thermal Noise
      2. Cryogenics
    4. Physical Environment Monitoring related
      1. Underground environment evaluation
      2. Interferometer noise evaluation
      3. Performance Improvement
    5. Calibration related
      1. DAC/CAL (Sftware)
    6. Data Management related
    7. Input & Output Optics related
    8. Laser related
    9. Auxiliary Optics related
    10. Digital System related
    11. Detector Characterization related
    12. Mirror related

Thermal Noise

  • Mechanical Q measurement (sapphire fiber, blade spring, bonding, coatings, ...)
  • Evaluation of sapphire suspension thermal noise
  • Evaluation of thermal noise of integrated cryo-payload
  • Design of new sapphire blade spring
  • Measurement of violin mode of sapphire suspension fibers and their subtraction from data

Cryogenics

  • Development of high-sensitivity local displacement sensor at low temperature
  • Development of frosting removal on mirror by using CO2 laser or heater
  • Evaluation of low-magnetism black-coating (optical absorption at 1064nm ...)
  • Optical absorption measurement of sapphire mirror at low temperature
  • Development of non-contact temperature measurement method of mirror

Underground environment evaluation

  • New environmental monitors
  • Seismometer analysis
  • Magnetometer analysis
  • Microphone analysis
  • Newtonian noise evaluation

Interferometer noise evaluation

  • New environmental monitors
  • Power line monitor, GND survey
  • Correlation/coherent analysis (Close to commissioning)

  • Glitch, line noise evaluation (Close to DetChar)

  • Feedforward, offline noise subtraction
  • PEM injection test

== VIS（Vibration Isolation System）== === Sensor Development===

  • Development of new local sensor with high-sensitivity, wide-range and cryogenic use, replaced from OSEM and photo-sensor
  • Development of new local sensor by using optical comb technology
  • Development of inertial sensor (seismometer, accelerometer)

Performance Improvement

  • Optimization of control, development of active filter
  • Control of low frequency range by using GIF
  • Improvement of lower frequency performance of IP
  • Development of light and easy maintenance GAS filter

DAC/CAL (Sftware)

  • Timing correction
  • Line-noise subtraction
  • Optimization of avoidance method of dynamic range problem
  • Improvement of self-diagnosis of pipe-line
  • Improvement of interface of pipe-line, filter, injection and so on

=== Commissioning/CAL (Hardware)===

  • PCAL

  • Higher performance of calibration of integrating sphere (5% -> <1%)

  • Mitigation of scattered light(in O4)
  • Stabilization of Pcal laser
  • Correction of temperature dependence of integrating sphere
  • Evaluation of integrating sphere like injection angle of laser and opening size (in O5)
  • Development of Gcal

KAGRA/KSC/EducationTraining/ResearchTopics (last edited 2021-04-12 23:25:37 by terrence.tsang)