piper: primordial inflation polarization explorer jeffrey hatef mentor: dr. alan kogut
TRANSCRIPT
![Page 1: PIPER: Primordial Inflation Polarization Explorer Jeffrey Hatef Mentor: Dr. Alan Kogut](https://reader030.vdocuments.us/reader030/viewer/2022032722/56649f465503460f94c68c67/html5/thumbnails/1.jpg)
PIPER: Primordial Inflation Polarization Explorer
Jeffrey HatefMentor: Dr. Alan Kogut
![Page 2: PIPER: Primordial Inflation Polarization Explorer Jeffrey Hatef Mentor: Dr. Alan Kogut](https://reader030.vdocuments.us/reader030/viewer/2022032722/56649f465503460f94c68c67/html5/thumbnails/2.jpg)
Inflation Theory: How is the Universe so big?
• The universe appears too big, inflation is a possible answer.
![Page 3: PIPER: Primordial Inflation Polarization Explorer Jeffrey Hatef Mentor: Dr. Alan Kogut](https://reader030.vdocuments.us/reader030/viewer/2022032722/56649f465503460f94c68c67/html5/thumbnails/3.jpg)
COBE and WMAP
• COBE beginning in 1989 and WMAP in 2001 have mapped the sky in the microwave range.
![Page 4: PIPER: Primordial Inflation Polarization Explorer Jeffrey Hatef Mentor: Dr. Alan Kogut](https://reader030.vdocuments.us/reader030/viewer/2022032722/56649f465503460f94c68c67/html5/thumbnails/4.jpg)
PIPER: The next step
• Current theory requires polarizations in the B mode caused by gravity waves rippling through the infant universe.
• These minute polarizations are known to be in the nanoKelvin range.
• PIPER will have the optics to record these polarization.
![Page 5: PIPER: Primordial Inflation Polarization Explorer Jeffrey Hatef Mentor: Dr. Alan Kogut](https://reader030.vdocuments.us/reader030/viewer/2022032722/56649f465503460f94c68c67/html5/thumbnails/5.jpg)
Detectors
• The bulk of the work this summer has been on detectors.
• Superconducting materials needed to be tested for use in Backshort-under-grid (BUG) array, Superconducting quantum interference device (SQUID), bolometers.
• Thermistors will be used to measure RF radiation.
![Page 6: PIPER: Primordial Inflation Polarization Explorer Jeffrey Hatef Mentor: Dr. Alan Kogut](https://reader030.vdocuments.us/reader030/viewer/2022032722/56649f465503460f94c68c67/html5/thumbnails/6.jpg)
Bolometer Basics
![Page 7: PIPER: Primordial Inflation Polarization Explorer Jeffrey Hatef Mentor: Dr. Alan Kogut](https://reader030.vdocuments.us/reader030/viewer/2022032722/56649f465503460f94c68c67/html5/thumbnails/7.jpg)
The Work
• Soldering cables, connectors and circuit-boards for the re-wiring of our cryo Dewar, SHINY.
• We performed polarimetry experiments to show that a Winston collector did not interfere with the polarization of incident light.
![Page 8: PIPER: Primordial Inflation Polarization Explorer Jeffrey Hatef Mentor: Dr. Alan Kogut](https://reader030.vdocuments.us/reader030/viewer/2022032722/56649f465503460f94c68c67/html5/thumbnails/8.jpg)
My Experiment
• I checked the accuracy of capacitive distance measuring devices compared to the chromatic confocal spectrometer.
![Page 9: PIPER: Primordial Inflation Polarization Explorer Jeffrey Hatef Mentor: Dr. Alan Kogut](https://reader030.vdocuments.us/reader030/viewer/2022032722/56649f465503460f94c68c67/html5/thumbnails/9.jpg)
My Results
• All capacitave sensors were extremely well standardized – to micrometer levels.
• Some offsets were recorded that may be used in future flight missions!
1500 2000 2500 3000 3500 4000 4500 5000
-20
-15
-10
-5
0
5
10
15
20
Series1Series3Series5Series7Series9Series11
![Page 10: PIPER: Primordial Inflation Polarization Explorer Jeffrey Hatef Mentor: Dr. Alan Kogut](https://reader030.vdocuments.us/reader030/viewer/2022032722/56649f465503460f94c68c67/html5/thumbnails/10.jpg)
Thanks!
• Alan Kogut and Paul Mirel• Luke Lowe, Amy Weston, and Sam Rodriguez• My fellow interns: Bailey, Joseph, and Alyssa