First operation of a double phase LAr Large Electron Multiplier Time Projection Chamber with a two-dimensional projective readout anode

Details First operation of a double phase LAr Large Electron Multiplier Time Projection Chamber with a two-dimensional projective readout anode First operation of a double phase LAr Large Electron Multiplier Time Projection Chamber with a two-dimensional projective readout anode

2010-12-02

arxiv.org/abs/1012.0483v1

Physics

Instrumentation and Detectors

25 pages, 17 figures

Scientific paper

10.1016/j.nima.2011.02.100

We have previously reported on the construction and successful operation of the novel double phase Liquid Argon Large Electron Multiplier Time Projection Chamber (LAr LEM-TPC). This detector concept provides a 3D-tracking and calorimetric device capable of adjustable charge amplification, a promising readout technology for next-generation neutrino detectors and direct Dark Matter searches. In this paper, we report on the first operation of a LAr LEM-TPC prototype - with an active area of 10$\times$10 cm$^2$ and 21 cm drift length - equipped with a single 1 mm thick LEM amplifying stage and a two dimensional projective readout anode. Cosmic muon events were collected, fully reconstructed and used to characterize the performance of the chamber. The obtained signals provide images of very high quality and the energy loss distributions of minimum ionizing tracks give a direct estimate of the amplification. We find that a stable gain of 27 can be achieved with this detector configuration corresponding to a signal-over-noise ratio larger than 200 for minimum ionizing tracks. The decoupling of the amplification stage and the use of the 2D readout anode offer several advantages which are described in the text.

Affiliated with

Also associated with

No associations

Rating

First operation of a double phase LAr Large Electron Multiplier Time Projection Chamber with a two-dimensional projective readout anode does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with First operation of a double phase LAr Large Electron Multiplier Time Projection Chamber with a two-dimensional projective readout anode, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and First operation of a double phase LAr Large Electron Multiplier Time Projection Chamber with a two-dimensional projective readout anode will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-604291