Prototype AT-TPC: Toward a new generation active target time projection chamber for radioactive beam experiments

Suzuki, D.; Ford, Michael T.; Bazin, D.; Mittig, W.; Lynch, W. G.; Ahn, T.; Aune, S.; Galyaev, E.; Fritsch, A.; Gilbert, Jason A.; Montes, F.; Shore, A.; Yurkon, J.; Kolata, J. J.; Browne, J.; Howard, Alan; Roberts, A.; Tang, Xiaodong

doi:10.1016/j.nima.2012.06.050

Cited by 74 publications

(49 citation statements)

References 31 publications

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“…The pad plane will be connected to a new generation electronics, that will allow to connect a large number of channels and have a more selective trigger. Several active targets encompassing such developments are being constructed worldwide [28,[37][38][39], which promise a bright future for ISGR studies of nuclei far from stability.…”

Section: Discussionmentioning

confidence: 99%

Isoscalar response ofNi68toα-particle and deuteron probes

et al. 2015

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Section: Discussionmentioning

confidence: 99%

Isoscalar response ofNi68toα-particle and deuteron probes

et al. 2015

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“…where n is the number of points that have been assigned to the line after the least-squares-fit, a = (a x , a y , a z ) is the anchor point given by Equation (8), and b = (b x , b y , b z ) is the line direction with b = 1. The detected lines are returned in decreasing order of the Hough space vote counts (but not necessarily in decreasing order of npoints 6 ) as in the following example: x y z q q q q q qq q q qq q q q q q q qq q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q q …”

Section: Maximum Number Of Lines (Nlines)mentioning

confidence: 99%

“…Some 3D sensing methods like Active Target Time Projection Chamber (AT-TPC) [8] or Light Detection and Ranging (LIDAR) [2] directly yield point clouds, while others like Nuclear Magnetic Resonance Spectroscopy (NMR) yield voxel rasters. Applying the Hough transform in the latter case thus requires a pre-processing step for filtering candidate points.…”

Section: Introductionmentioning

confidence: 99%

Iterative Hough Transform for Line Detection in 3D Point Clouds

Dalitz¹,

Schramke²,

Jeltsch³

2017

Image Processing on Line

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The Hough transform is a voting scheme for locating geometric objects in point clouds. This paper describes its application for detecting lines in three dimensional point clouds. For parameter quantization, a recently proposed method for Hough parameter space regularization is used. The voting process is done in an iterative way by selecting the line with the most votes and removing the corresponding points in each step. To overcome the inherent inaccuracies of the parameter space discretization, each line is estimated with an orthogonal least squares fit among the candidate points returned from the Hough transform. Source CodeThe reviewed C++ source code for this algorithm is available from the web page of this article 1 . Compilation and usage instruction are included in the README.txt file of the archive. Supplementary MaterialSix reference data sets are provided with the article. The data sets contain both synthetic data and experimental data of radioactive beams recorded in an active target time projection chamber (AT-TPC).

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“…In a recent experiment [23] using the prototype activetarget time projection chamber (pAT-TPC) [24] developed at Michigan State University, the fusion cross section for 10 Be+ 40 Ar was studied with extremely high efficiency. An entire excitation function (Fig.…”

Section: Fusion Studies With a Time Projection Chambermentioning

confidence: 99%

Near and sub-barrier reactions of ⁸B

2017

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Abstract. Four classes of measurements that are important for achieving a complete understanding of the reactions of exotic nuclei are identified and classified according to their degree of difficulty. Previously reported data for near-and sub-barrier fusion of 8 B+ 58 Ni are critically reviewed. The influence of breakup protons on the evaporation proton measurements for this system is shown to be small at all energies except for the lowest one measured, and corrections are made for this process. Model dependencies in the deduced fusion cross sections are assessed using three different evaporation codes. Data sets for targets of 58 Ni and 28 Si are shown to be consistent with each other, and with fusion enhancement up to energies that are greater than the Coulomb barrier V b (E c.m. V b + 1.5× ω). An important difference with the behavior of neutron-halo systems is thereby confirmed. Possible fusion suppression beyond this energy is suggested by the 28 Si data. A proposal to measure the 8 B+ 40 Ar fusion cross section using an active-target time projection chamber is discussed.

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Prototype AT-TPC: Toward a new generation active target time projection chamber for radioactive beam experiments

Cited by 74 publications

References 31 publications

Isoscalar response ofNi68toα-particle and deuteron probes

Isoscalar response ofNi68toα-particle and deuteron probes

Iterative Hough Transform for Line Detection in 3D Point Clouds

Near and sub-barrier reactions of ⁸B

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Prototype AT-TPC: Toward a new generation active target time projection chamber for radioactive beam experiments

Cited by 74 publications

References 31 publications

Isoscalar response ofNi68toα-particle and deuteron probes

Isoscalar response ofNi68toα-particle and deuteron probes

Iterative Hough Transform for Line Detection in 3D Point Clouds

Near and sub-barrier reactions of 8B

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Resources

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Near and sub-barrier reactions of ⁸B