Building a large-area GEM-based readout chamber for the upgrade of the ALICE TPC

A large Time Projection Chamber (TPC) is the main device for tracking and charged-particle identification in the ALICE experiment at the CERN LHC. After the second long shutdown in 2019-2020, the LHC will deliver Pb beams colliding at an interaction rate up to 50 kHz, which is about a factor of 100 above the present read-out rate of the TPC. To fully exploit the LHC potential the TPC will be upgraded based on the Gas Electron Multiplier (GEM) technology. A prototype of an ALICE TPC Outer Read-Out Chamber (OROC) was equipped with twelve large-size GEM foils as amplification stage to demonstrate the feasibility of replacing the current Multi Wire Proportional Chambers with the new technology. With a total area of $\sim$0.76 m$^2$ it is the largest GEM-based detector built to date. The GEM OROC was installed within a test field cage and commissioned with radioactive sources.Comment: 4 pages, 3 figures, Proceedings of the 14th Vienna Conference on Instrumentation (VCI 2016), submitted to Nuclear Instruments and Methods

A Compact TPC for the sPHENIX Experiment

The sPHENIX detector to be installed at RHIC in 2022 is designed to precisely measure jets, jet correlations, and dilepton pairs in heavy-ion collisions. With these measurements in mind, sPHENIX will employ a compact TPC covering 20cm < r < 78 cm and |{\eta}| < 1.1 as the central tracker. Utilizing an optimized Ar-CF4 gas mixture, zigzag readout pads, a 1.4 T solenoid, and a modified SAMPA chip for streaming readout, the TPC will provide a position resolution sufficient for measuring target observables in a high event rate environment. The design of the TPC will be discussed, as well as test beam data and potential applicability to the EICComment: Proceedings submitted to the 2021 International Conference on Technology and Instrumentation in Particle Physics (TIPP2021

Integrating Science and Mathematics Education Research into Teaching: A Conference for Students, Teachers and University Faculty in Science, Mathematics, and Related Fields

This proposal from the University of Maine Center for Science and Mathematics Education is a request for a TPC Conference/Symposium to fund a six-day national conference and summer academy entitled Integrating Science and Mathematics Education Research into Teaching. The purposes of the conference are: (1) to bring together all participants in the science and mathematics education research enterprise (teachers, administrators, scientists and mathematicians, education faculty, future teachers) to exchange ideas about research and curriculum innovation ongoing in their fields; and (2) help teachers integrate research-based instructional strategies, particularly those that depend on innovative uses of technology, into their teaching practices

A model for assessing the impact of electronic procurement forms

This paper aims to contribute to the development of a model for assessing the direct and indirect impact of various forms of electronic procurement (EP) on a firm¿s integral purchasing (-related) costs. The model builds on existing classifications of purchasing costs and benefits and is illustrated by means of a number of empirical cases

HARPO: a TPC as a gamma-ray telescope and polarimeter

A gas Time Projection Chamber can be used for gamma-ray astronomy with excellent angular-precision and sensitivity to faint sources, and for polarimetry, through the measurement of photon conversion to $e^+e^-$ pairs. We present the expected performance in simulations and the recent development of a demonstrator for tests in a polarized photon beam.Comment: SPIE Astronomical Telescopes + Instrumentation, Ultraviolet to gamma ray, Montr\'eal, Canada 2014. v2: note added in proof. Copyright 2014 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibite

ArgoNeuT: A Liquid Argon Time Projection Chamber Test in the NuMI Beamline

Liquid Argon Time Projection Chamber detectors are ideally suited for studying neutrino interactions and probing the parameters that characterize neutrino oscillations. The ability to drift ionization particles over long distances in purified argon and to trigger on abundant scintillation light allows for excellent particle identification and triggering capability. In these proceedings the details of the ArgoNeuT test-beam project will be presented after a brief introduction to the detector technique. ArgoNeuT is a 175 liter detector exposed to Fermilab's NuMI neutrino beamline. The first neutrino interactions observed in ArgoNeuT will be presented, along with discussion of the various physics analyses to be performed on this data sample.Comment: To be published in the proceedings of DPF-2009, Detroit, MI, July 2009, eConf C09072