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NSWPublicResults

Introduction

The plots shown below have been approved by the NSW Project and may be shown by ATLAS speakers at conferences. Do not add plots on your own but contact the NSW project leader to arrange a plot approval.

Plot Approval Procedure

Plots and data concerning NSW detector performance, including test beam and/or module-0 results, can only be shown publicly if approved. Plots/results are approved by the NSW project leader after a discussion in the NSW Steering Group. Before requesting the approval of a plot, it should be presented, discussed and agreed on in the appropriate community, eg using the MicroMegas or sTGC Weekly meetings.

The official plot approval procedure is in place since October 2014, it was defined together with and endorsed by the Muon IB in its session on October 16 2014.

Technical Design Report

Here is the Technical Design Report from 2013. The link also provides access to the individual figures of the TDR.

Conference Contributions

Here is a list of Muon System talks given at conferences.

Here is a list of NSW, sTGC and MM talks given at conferences.

MicroMegas Results and Plots

MM Chamber Construction

Public Talks at conferences

Public Plots

Fig. 1: Here goes the plot title/short content description and the upload date
And here goes the detailed and background information
MyPlotName.png

MM Performance

Public Talks at conferences

Public Plots

In the following, performance studies of Micromegas detectors performed with test-beams on several small (10x10 cm2) / medium(1x0.5 m2) size resistive chambers will be reported.
In particular the chambers that will be referred to are:
  • Tmm type bulk resistive MM(Tmm2,..., 6) with 10 cm x10 cm active area, with strips 150 μm wide and with a pitch of 250 μm. The resistive strips follow the readout strips geometry with resistivity 40 MOhm/cm. The woven stainless steel mesh structure has a wire diameter of 18 μm and is segmented in 400 lines/inch corresponding to a mesh pitch of &approx 63.5 μm. The support pillars have a diameter of 300 μm with a pitch of 2.5 mm.
  • Tmb similar to Tmm type. The support pillars have a diameter of 500 μm with a pitch of 5 mm.
  • T type bulk resistive MM (T1,..., T8) with 10 cm x 10 cm active area, readout strips 300 μm wide with 400 μm pitch. The resistive strips follow the readout strips geometry with resistivity 20 MOhm/cm. The woven stainless steel mesh structure has a wire diameter of 18 μm and is segmented in 400 lines/inch corresponding to a mesh pitch of 63.5μm. The drift electrode had also a mesh structure with a density of 325 lines/inch (wires of 30 μm diameter with a pitch of 80 μm).
  • TQF chamber similar to T type but with four areas of different resistive strip pattern with respect to the readout strips (normal, half pitch offset, -1 degree and +2 degrees rotation). The resistivity is a bit lower than the T 10 MOhm/cm
  • MMSW (MM for the Small Wheel): the first 4-layers prototype, 1 m x 0.5 m, in a configuration similar to that of the MM for the NSW. It has two planes with parallel strips (precision) and two planes with (stereo) strips rotated by (+/-) 1.5 degrees with respect to the precision ones for second coordinate measurement. The strip pitch is 415 μm and it has a "floating mesh" as opposed to the bulk technique. The mesh structure has a wire diameter of 30 μm and a pitch of 80 μm. The resistivity used in the resistive strips is 10 MOhm/cm.

All chambers have a 5 mm drift gap and a 128 μm amplification gap. When not explicitly specified the chambers were operated with a gas mixture of Ar+7%CO_2, a drift electrical field of 600 V/cm and an amplification HV in the range 540-580 V corresponding to a gain roughly 10000. The chambers are always readout with APV25 chips connected to the SRS system.

H6_hd.jpg

Fig. 2: Integrated charge for one APV channel for a single event
apv.pdf
apv_function.pdf
Fig. 2: Event display (μTPC and Centroid)
display3.pdf

Fig. 2: Efficiency map
2D hit reconstruction in a Tmm chamber during a high statistics run. For this study the chamber was kept perpendicular to the beam axis. The hit position in both X and Y readouts is calculated using the centroid method and only events with a single cluster per readout (perpendicular tracks) are used. The inefficient spots appearing every 2.5 mm, corresponding to the pillar structure supporting the mesh of the chamber, are visible. Four different representations of the same plot are shown.
The measurements were performed with a Tmm type MM bulk resistive chamber operated with an amplification voltage of $HVamp = 540 V. The data were acquired during PS/T9 with a 10 GeV/c $&pi+/p beam.

tmm2_pillars_colz_log_newaxes.pdf tmm2_pillars_colz.pdf

Fig. 3: Spatial resolution of a single Micromegas chamber vs incident angle
Spatial resolution using the charge centroid method (blue triangles), the μTPC method (full red circles) and the combination of the two (black open circles) as a function of the particle incident angle. The resolution is obtained from the residual distribution of the hit position difference between two Micromegas chambers separated by a small distance.
mm_single_plane_spatial_resolution.png
Fig. 4: Spatial resolution of precision coordinate of the MMSW
The MMSW is the Micromegas Quadruplet Prototype.
spatial_resolution_mmsw1_layer1layer2.pdf
Fig. 4: Spatial resolution of precision coordinate of the MMSW
The MMSW is the Micromegas Quadruplet Prototype.
spatial_resolution_mmsw1_layer2layer34.pdf
Fig. 4: Spatial resolution of precision coordinate of the MMSW
The MMSW is the Micromegas Quadruplet Prototype.
spatial_resolution_mmsw1_layer1layer34.pdf
Fig. 5: Spatial resolution of second coordinate of the MMSW
The MMSW is the Micromegas Quadruplet Prototype.
spatial_resolution_mmsw1_layer34ytmm6y.pdf

sTGC Results and Plots

sTGC Chamber Construction

Public Talks at conferences

Public Plots

Fig. 1: Here goes the plot title/short content description and the upload date
And here goes the detailed and background information
MyPlotName.png

sTGC Performance

Public Talks at conferences

Public Plots

Fig. 2: Inclusive sTGC residual
The reference track is built from all four hits in the sTGC quadruplet.
sTGC_standalone_residuals_inc.png
Fig. 2: Exclusive sTGC residual
The reference track is built from three hits in the sTGC quadruplet, excluding the first hit for which the residual is computed.
sTGC_standalone_residuals_exc.png
Fig. 2: sTGC residual
The reference track is built from hits in three pixel layers before and after the sTGC quadruplet.
sTGC_residual_pixel.png

Combined Results and Plots

Fig. 1: Here goes the plot title/short content description and the upload date
And here goes the detailed and background information
MyPlotName.png

Electronics

Fig. 1: Performance of sTGC serializer: "Eye" diagram
The sTGC trigger data serializer (TDS) ASIC chip is responsible for the preparation of trigger data for both pads and strips with additional task of serializing data for transmission to the circuits on the rim of the NSW detector. The serializer is realized in IBM 130 nm CMOS technology. It is adapted from the CERN GBT serializer, with changed architecture from loading 120 bits at 40 MHz to loading 30 bits in parallel at 160 MHz. The serial output is at 4.8 Gbps. The eye diagram is evaluated in a 12.5 GHz bandwidth, 50 GS/s oscilloscope with a PRBS-31 pattern. The height of the eye is measured to be about 540 mV, and the width is about 180.3 ps. Jitter analysis shows that the total jitter at a bit-error-ratio (BER) of 1E-12 is 49.7 ps. A BER test with embedded PRBS checker inside a Xilinx 7 FPGA was also performed. An error free running of three days has been achieved, which corresponds to a BER less than 1 E-15.
sTGC_serializer_performance.png


Major updates:
-- Main.Stephanie.Zimmermann - 2014-10-31

Responsible: BeateHeinemann
Subject: public

Topic attachments
I Attachment History Action Size Date Who Comment
JPEGjpg H6_hd.jpg r1 manage 2521.4 K 2015-05-20 - 17:46 KonstantinosNtekas Micromegas TB photo
PDFpdf angle_10deg_aftercor.pdf r1 manage 15.6 K 2015-05-20 - 16:52 KonstantinosNtekas Micromegas angular distribution for 10 degrees
PDFpdf angle_20deg_aftercor.pdf r1 manage 15.8 K 2015-05-20 - 16:52 KonstantinosNtekas Micromegas angular distribution for 20 degrees
PDFpdf angle_30deg_aftercor.pdf r1 manage 16.0 K 2015-05-20 - 16:52 KonstantinosNtekas Micromegas angular distribution for 30 degrees
PDFpdf angle_40deg_aftercor.pdf r1 manage 15.9 K 2015-05-20 - 16:52 KonstantinosNtekas Micromegas angular distribution for 40 degrees
PDFpdf apv.pdf r1 manage 28.5 K 2015-05-20 - 17:17 KonstantinosNtekas Micromegas APV integrated charge single channel example
PDFpdf apv_function.pdf r1 manage 33.2 K 2015-05-20 - 17:17 KonstantinosNtekas Micromegas APV integrated charge single channel example
PDFpdf display3.pdf r1 manage 16.3 K 2015-05-20 - 17:13 KonstantinosNtekas Micromegas track evt display
PDFpdf efficiency_tmm_pillarregions_centroid_perpendiculartracks.pdf r1 manage 31.3 K 2015-05-20 - 16:52 KonstantinosNtekas Micromegas efficiency map for different regions with respect to the pillars
PDFpdf efficiency_tqf_t2_centroid_30degtracks_angletext.pdf r1 manage 18.6 K 2015-05-20 - 16:52 KonstantinosNtekas Micromegas efficiency map for 30 degrees inclination angle
PDFpdf efficiency_tqf_t2_centroid_perpendiculartracks_angletext.pdf r1 manage 19.5 K 2015-05-20 - 16:52 KonstantinosNtekas Micromegas efficiency map for 0 degrees inclination angle
PNGpng mm_single_plane_spatial_resolution.png r1 manage 19.1 K 2014-11-18 - 01:37 OliverStelzerChilton MM single plane spatial resolution vs incident angle
PNGpng mmsw_precision_coordinate.png r1 manage 36.3 K 2014-11-18 - 01:39 OliverStelzerChilton MMSW precision coordinate resolution
PNGpng mmsw_second_coordinate.png r1 manage 41.1 K 2014-11-18 - 01:39 OliverStelzerChilton MMSW second coordinate resolution
PDFpdf reco_angle_beforeaftercor_errors.pdf r1 manage 15.7 K 2015-05-20 - 16:52 KonstantinosNtekas Micromegas reconstructed angle before and after the utpc refinement
PDFpdf residuals_t2_t4_H4.pdf r1 manage 18.1 K 2015-05-20 - 16:52 KonstantinosNtekas Micromegas resolution for T chamber type
PNGpng sTGC_residual_pixel.png r1 manage 45.5 K 2014-11-19 - 19:57 OliverStelzerChilton sTGC residual with respect to a pixel track
PNGpng sTGC_serializer_performance.png r1 manage 271.4 K 2014-12-01 - 19:50 OliverStelzerChilton sTGC serializer performance
PNGpng sTGC_standalone_residuals_exc.png r1 manage 131.6 K 2014-11-19 - 01:26 OliverStelzerChilton sTGC standalone exclusive resolution
PNGpng sTGC_standalone_residuals_inc.png r1 manage 116.8 K 2014-11-19 - 01:26 OliverStelzerChilton sTGC standalone inclusive resolution
PDFpdf spatial_resolution_mmsw1_layer1layer2.pdf r1 manage 18.3 K 2015-05-20 - 16:52 KonstantinosNtekas MMSW precision coordinate resolution (layer1-layer2)
PDFpdf spatial_resolution_mmsw1_layer1layer34.pdf r1 manage 18.3 K 2015-05-20 - 16:54 KonstantinosNtekas MMSW precision coordinate resolution using the stereo strips(layer1-layer34)
PDFpdf spatial_resolution_mmsw1_layer2layer34.pdf r1 manage 18.7 K 2015-05-20 - 16:54 KonstantinosNtekas MMSW precision coordinate resolution using the stereo strips (layer2-layer34)
PDFpdf spatial_resolution_mmsw1_layer34ytmm6y.pdf r1 manage 18.8 K 2015-05-20 - 16:54 KonstantinosNtekas MMSW second coordinate resolution using the stereo strips
PDFpdf spatial_resolution_tmm_tmb_x.pdf r1 manage 18.0 K 2015-05-20 - 16:54 KonstantinosNtekas Micromegas resolution for Tmm chamber type (X readout)
PDFpdf spatial_resolution_tmm_tmb_y.pdf r1 manage 17.5 K 2015-05-20 - 16:54 KonstantinosNtekas Micromegas resolution for Tmm chamber type (Y readout)
PDFpdf spatial_resolution_utpc_beforeaftercor_atlasnsw.pdf r1 manage 14.5 K 2015-05-20 - 16:54 KonstantinosNtekas Micromegas resolution for T chamber type with utpc before and after the refinement of the method
PDFpdf tmm2_pillars_colz.pdf r1 manage 261.6 K 2015-05-20 - 16:54 KonstantinosNtekas Micromegas efficiency map from 2d hit reconstruction (col1)
PDFpdf tmm2_pillars_colz3.pdf r1 manage 816.1 K 2015-05-20 - 16:54 KonstantinosNtekas Micromegas efficiency map from 2d hit reconstruction (col2)
PDFpdf tmm2_pillars_colz_log_newaxes.pdf r1 manage 1273.0 K 2015-05-20 - 16:54 KonstantinosNtekas Micromegas efficiency map from 2d hit reconstruction (col3)
PDFpdf tmm2_pillars_scatter.pdf r1 manage 843.1 K 2015-05-20 - 16:55 KonstantinosNtekas Micromegas efficiency map from 2d hit reconstruction (scatterplot)
PDFpdf tmm_pillarseffect_centroid_perpendiculartracks_aligned.pdf r1 manage 473.1 K 2015-05-20 - 16:54 KonstantinosNtekas Micromegas effect of the pillars (bias) on the hit reconstruction
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Topic revision: r14 - 2015-05-20 - KonstantinosNtekas
 
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