Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Posen, Sam"'
Autor:
Fedderke, Michael A., Harnik, Roni, Kaplan, David E., Posen, Sam, Rajendran, Surjeet, Serra, Francesco, Yakovlev, Vyacheslav P.
We describe a gyroscope that measures rotation based on the effects of the rotation on the polarization of light. Rotation induces a differential phase shift in the propagation of left and right circularly polarized light and this phase shift can be
Externí odkaz:
http://arxiv.org/abs/2406.16178
Despite having advantageous superconducting properties, Nb3Sn superconducting radiofrequency (SRF) cavities still have practical challenges compared to Nb SRF cavities due to the brittle nature of Nb3Sn. Performance degradation can occur when a Nb3Sn
Externí odkaz:
http://arxiv.org/abs/2405.00211
Autor:
Zhai, Gan, Halperin, William P., Reyes, Arneil P., Posen, Sam, Sung, Zuhawn, Tarantini, Chiara, Brown, Michael D., Larbalestier, David C.
The superconductor Nb$_3$Sn has a high critical temperature and high critical field, widely used for high-field superconducting magnets. In this work we investigate its microscopic electronic structure with $^{93}$Nb nuclear magnetic resonance (NMR).
Externí odkaz:
http://arxiv.org/abs/2311.00841
Autor:
Wang, Changqing, Melnychuk, Oleksandr S, Contreras-Martinez, Crispin, Lu, Yao, Pischalnikov, Yuriy M, Pronitchev, Oleg, Giaccone, Bianca, Pilipenko, Roman, Zorzetti, Silvia, Posen, Sam, Romanenko, Alexander, Grassellino, Anna
High-quality cavities are crucial for various fundamental physical studies and applications. Here we find that by coupling two cavities directly or via a phase-tunable coupling channel, the photon lifetime of the local field can exceed that of the ba
Externí odkaz:
http://arxiv.org/abs/2305.15662
In this study we will show a new method of polishing for Nb3Sn cavities known as centrifugal barrel polishing (CBP). Using this method, Nb3Sn coated samples are polished to a surface roughness comparable to a traditional Nb cavity after electropolish
Externí odkaz:
http://arxiv.org/abs/2305.10226
Autor:
Fedderke, Michael A., Thompson, Jedidiah O., Cervantes, Raphael, Giaccone, Bianca, Harnik, Roni, Kaplan, David E., Posen, Sam, Rajendran, Surjeet
Publikováno v:
Phys. Rev. D 109, 015025 (2024)
We propose a novel search technique for axions with a $CP$-violating monopole coupling $\tilde{g}_Q$ to bulk Standard Model charges $Q \in \{B,L,B-L\}$. Gradients in the static axion field configurations sourced by matter induce achromatic circular p
Externí odkaz:
http://arxiv.org/abs/2304.11261
Autor:
Cano, Arely, Eremeev, Grigory V., Zuazo, Juan R., Lee, Jaeyel, Luo, Bing, Martinello, Martina, Romanenko, Alexander, Posen, Sam
This contribution discusses the results of an in-situ angular XPS study on the thermal evolution of the native oxide layer on Nb3Sn and pure Nb. XPS data were recorded with conventional spectrometers using an AlK(alpha) X-ray source for spectra colle
Externí odkaz:
http://arxiv.org/abs/2304.06112
Autor:
Sung, Zu Hawn, Kulyavtsev, Paulina, Martinello, Martina, Gonnella, Dan, Ross, Marc, Posen, Sam
A series of experiments were carried out in an effort to develop a simple method for predicting magnetic flux expulsion behavior of high purity niobium used to fabricate superconducting radio frequency (SRF) cavities. Using conventional metallographi
Externí odkaz:
http://arxiv.org/abs/2303.14122
Autor:
Belomestnykh, Sergey, Nanni, Emilio A., Weise, Hans, Baryshev, Sergey V., Dhakal, Pashupati, Geng, Rongli, Giaccone, Bianca, Jing, Chunguang, Liepe, Matthias, Lu, Xueying, Luo, Tianhuan, Myneni, Ganapati, Nassiri, Alireza, Neuffer, David, Ng, Cho-Kuen, Posen, Sam, Tantawi, Sami, Valente-Feliciano, Anne-Marie, Vay, Jean-Luc, Weatherford, Brandon, Yamamoto, Akira
Accelerator radio frequency (RF) technology has been and remains critical for modern high energy physics (HEP) experiments based on particle accelerators. Tremendous progress in advancing this technology has been achieved over the past decade in seve
Externí odkaz:
http://arxiv.org/abs/2208.12368
Autor:
Cervantes, Raphael, Braggio, Caterina, Giaccone, Bianca, Frolov, Daniil, Grassellino, Anna, Harnik, Roni, Melnychuk, Oleksandr, Pilipenko, Roman, Posen, Sam, Romanenko, Alexander
Wavelike, bosonic dark matter candidates like axions and dark photons can be detected using microwave cavities commonly referred to as haloscopes. Traditionally, haloscopes consist of tunable copper cavities operating in the TM$_{010}$ mode, but ohmi
Externí odkaz:
http://arxiv.org/abs/2208.03183