Development of a low-alpha-emitting {\mu}-PIC for NEWAGE direction-sensitive dark-matter search

NEWAGE is a direction-sensitive dark-matter-search experiment that uses a micro-patterned gaseous detector, or {\mu}-PIC, as the readout. The main background sources are {\alpha}-rays from radioactive contaminants in the {\mu}-PIC. We have therefore developed a low-alpha-emitting {\mu}-PICs and measured its performances. We measured the surface {\alpha}-ray emission rate of the {\mu}-PIC in the Kamioka mine using a surface {\alpha}-ray counter based on a micro TPC.Comment: 6 pages, 4 figure

UPIC Magazine, Issue 7

Every semester, undergraduate students from every major and staff from every part of Clemson University join together through UPIC internships. These paid internships grant students real, on the job experience in professional fields and offer staff a chance to mentor some of Clemson’s most brilliant students. To find out more about the UPIC Program, visit career.clemson.edu/internship_programs UPIC is part of Clemson’s Center for Career and Professional Developmenthttps://tigerprints.clemson.edu/upic/1006/thumbnail.jp

UPIC Magazine, Issue 4

Every semester, undergraduate students from every major and staff from every part of Clemson University join together through UPIC internships. These paid internships grant students real, on the job experience in professional fields and offer staff a chance to mentor some of Clemson’s most brilliant students. To find out more about the UPIC Program, visit career.clemson.edu/internship_programs UPIC is part of Clemson’s Center for Career and Professional Developmenthttps://tigerprints.clemson.edu/upic/1003/thumbnail.jp

UPIC Magazine, Issue 1

Every semester, undergraduate students from every major and staff from every part of Clemson University join together through UPIC internships. These paid internships grant students real, on the job experience in professional fields and offer staff a chance to mentor some of Clemson’s most brilliant students. To find out more about the UPIC Program, visit career.clemson.edu/internship_programs UPIC is part of Clemson’s Center for Career and Professional Developmenthttps://tigerprints.clemson.edu/upic/1000/thumbnail.jp

UPIC Magazine, Issue 2

Every semester, undergraduate students from every major and staff from every part of Clemson University join together through UPIC internships. These paid internships grant students real, on the job experience in professional fields and offer staff a chance to mentor some of Clemson’s most brilliant students. To find out more about the UPIC Program, visit career.clemson.edu/internship_programs UPIC is part of Clemson’s Center for Career and Professional Developmenthttps://tigerprints.clemson.edu/upic/1001/thumbnail.jp

Modeling of laser wakefield acceleration in Lorentz boosted frame using EM-PIC code with spectral solver

WOS:000333403900007 (Nº de Acesso Web of Science)Simulating laser wakefield acceleration (LWFA) in a Lorentz boosted frame in which the plasma drifts towards the laser with nu(b) can speed up the simulation by factors of gamma(2)(b) = (1 nu(2)(b)/c(2))(-1). In these simulations the relativistic drifting plasma inevitably induces a high frequency numerical instability that contaminates the interesting physics. Various approaches have been proposed to mitigate this instability. One approach is to solve Maxwell equations in Fourier space (a spectral solver) as this has been shown to suppress the fastest growing modes of this instability in simple test problems using a simple low pass or "ring" or "shell" like filters in Fourier space. We describe the development of a fully parallelized, multi-dimensional, particle-in-cell code that uses a spectral solver to solve Maxwell's equations and that includes the ability to launch a laser using a moving antenna. This new EM-PIC code is called UPIC-EMMA and it is based on the components of the UCLA PIC framework (UPIC). We show that by using UPIC-EMMA, LWFA simulations in the boosted frames with arbitrary yb can be conducted without the presence of the numerical instability. We also compare the results of a few LWFA cases for several values of yb, including lab frame simulations using OSIRIS, an EM-PIC code with a finite-difference time domain (FDTD) Maxwell solver. These comparisons include cases in both linear and nonlinear regimes. We also investigate some issues associated with numerical dispersion in lab and boosted frame simulations and between FDTD and spectral solvers

Center for Career and Professional Development Annual Report, 2012-2013

Our annual reports provide an overview of the services, events, and programs provided to undergraduate, graduate students, and first-year alumni. Our data reporting cycle runs from August 15 – August 14 to follow the academic year.https://tigerprints.clemson.edu/ccpd_ar/1005/thumbnail.jp

UPIC Magazine, Issue 6

Every semester, undergraduate students from every major and staff from every part of Clemson University join together through UPIC internships. These paid internships grant students real, on the job experience in professional fields and offer staff a chance to mentor some of Clemson’s most brilliant students. To find out more about the UPIC Program, visit career.clemson.edu/internship_programs UPIC is part of Clemson’s Center for Career and Professional Developmenthttps://tigerprints.clemson.edu/upic/1005/thumbnail.jp