All posts by bettygaffney

Thesis Defense – Ms. Johanna Nagy

Optical Development for the SPIDER Balloon-Borne CMB Polarimeter

The generation of a stochastic background of gravitational waves is a key prediction of inflation. At large angular scales, these gravitational waves imprint a B-mode polarization pattern in the Cosmic Microwave Background, providing a new window into the physics of the early universe and helping to constrain and distinguish between inflationary models. SPIDER is a balloon-borne telescope uniquely optimized to search for the inflationary B-mode signature. Over the course of two Antarctic flights, SPIDER will make polarization maps over 10% of the sky in three frequency bands with degree-scale angular resolution. The SPIDER optics are designed to take advantage of the low atmospheric loading and large sky coverage accessible from the ballooning platform through a combination of high optical efficiency, low in-band loading, and strong sidelobe rejection. These goals are applied to the design, fabrication, and testing of many optical components including forebaffles, windows, and half-wave plate polarization modulators. A review of instrument performance is presented as a validation of the optical system, including the polarization angle calibration and preliminary data analysis from the first flight in January 2015. Preparations for a second flight in December 2017 are currently underway.

August 23, 2016

The Miller Room – 10:00 a.m.

Advisor: John Ruhl

Cuyahoga Valley House Concert – May 15, 2016

Our own Ed Caner has performed as a sideman for
over 50 major acts. He is also a founding
member of his own band, Hey Mavis!
For our series, Ed invites different guest
musicians to perform with him each
month. Admission: $10, $8 Conservancy
members. Advance sales available by calling
330-657-2909, option 4, or purchasing
online at Click
on Events for listings and registration.
Hines Hill Conference Center, 6:30 p.m.
doors open, 7 p.m. concert begins. Seating
is limited. The facility is not wheelchair
accessible. On concert days, call the
Cultural Arts Hotline at 440-546-5998 after
2 p.m. for up-to-date ticket availability and
severe weather cancellations.

First-Year Grad Students – Qualifying Exam

The dates for the May 2016 Qualifying exam have been set.  The exam will be in the week of May 23 – 27.  Part One of the exam will be on Tuesday May 24 at 2 p.m. – 5 p.m.  Part Two of the exam is on Wednesday May 25 at 2 p.m. to 5 p.m.  The venue for the exam will be determined and announced a bit closer to the date.  Results should be available by the end of Friday May 27.

Please contact Harsh Mathur ( if you have any questions.

Lisa M. Bauer – Thesis Defense

“Magnetic Nanoparticle Characterization for Imaging and Therapeutic Applications”


Thursday, March 10, 2016

1:30 p.m. The Miller Room

Advisor: Mark Griswold

Committee Members: Robert W. Brown, Ph.D., Efstathios Karathanasis, Ph.D., Michael A. Martens, Ph.D., Peter de Blank, M.D.


Paul Quayle – Thesis Defense

August 19, 2015

The title is: Synthesis and characterization of ZnSnN2: a charge-neutral ordering model for wurtzite-based heterovalent ternary compounds


10:00 A.M.

Rockefeller Building – Miller Room


Advisor: Prof. Kathleen Kash