J A Garzon Trasgo2010 Intro

Juan A. Garzón: 2nd. Workshop on the Trasgo Project. S. Compostela Feb. 5th-6th. 2010

2nd. Workshopon

Proyecto

Project

Still walking...

1


A TRASGO

What is it?


Following a Spanish Dictionary:


What we pretend to be:

An affordable and high performance High Energycharged particles Timing and Tracking detector to be used everywhere an affordable and high performancehigh energy charged particles timing and trackingdetector is needed

DAQ and

Power Supplies


A trasgo pretends to offer:



AffordabilityBasic elements common tothe different configurations

Detectors

Chamber

Plane

Strip or Cell

DAQ Boards Other elementsFEE Electronics

HV power supplyLV power supplyTemperature, pressure sensorsAcquisition, reconstructionand analisys software…



Modularity



Versatility

AbsorbersDifferent number of detectors



Capability of workingSand-alone


A TRASGO

Why is it special?

Juan A. Garzón: 2nd. Workshop on the Trasgo Project. Santiago de Compostela Feb. 5th-6th. 2010


Three basic ingredients:

-High time resolution detectorsTiming Resistive Plate Chambers

-Data acquisition board including thereconstrucion and analysis software

TTB: Timing and Tracking Board-A powerful and fast track reconstructionAlgorithm

TimTrack



- High time resolution detectorsTiming Resistive Plate Chambers

-Timing Resitive Plate Chambers (tRPCs) offer the bestperformances at the best price to cover big surfaces- Are easy to manufacture in mass production- Robust and relatively easy to handle- Difficult to build offering the best performance

Tentative minimum requirements:. Eficiency > 90% Time resolution < 200psRate capability > 100Hz/cm2Dead time of a single channel < 100ns

Chamber side view

Gas flow

HV

IsolatingCover



- Data acquisition board including thereconstrucion and analysis software

TTB: Timing and Tracking Board

Inspired by the TRB (Trigger Readout Board) of HADES-GSI


TRB

+- Tracking implemented in FPGA’s

- Analisis implemented in board processor (ETRAX)


-A powerful and fast track reconstructionAlgorithm:

TimTrack

Saeta: s = (X0,X’,Y0,Y’,T0,1/Vz)

T0

Vz

y

x L

z=0Y0

X0

X’

Y’

z

V This equation provides the saetadirectly from the data

Vector s depends on the dataMatrix K depents on the layout

Covariance matrix, V:V = K-1


A TRASGO

Minimum requirements


Box4 RPC planes

80 cm

80 cm

80 cmFEE

32channels/plane

TRB/TTB128 channels


Trasgo’s resolutions (β=1. Units: ps, cms and radians)

1 TRB : 128 channels 2 TRBs :256 channels

δtRPC Planes/Trasgo δT0 δv/v(%) δx δx’ δT0 δv/v(%) δx δx’

4 70 7 9.4 0.03 70 7 5.4 0.02

6 58 5 9.9 0.04 58 5 6.0 0.02200ps

8 50 6 10 0.04 50 6 6.5 0.02

4 35 3.6 7.1 0.024 35 3.6 4.7 0.02

6 30 3.1 6.9 0.025 30 3.1 5.0 0.02100ps

8 25 3 6.4 0.024 25 3 5.1 0.02


A TRASGO

What is it for?


Cosmic ray detection is useful not only for research in cosmic rays!

- Dosimetry in airplanes, computing and telecomunication equipments,high energy particle physics accelerators environments…

- Interplanetary magnetic field measurements- Solar activity- Correlation studies between cosmic rays and climate changes- Ultra High energy nuclear physics models- Ultra High energy physics radiation with mater interaction- and other secondary uses:

- Calibration of detectors- Search of hidden chambers in pyramids- Earth subsoil “radiography”- …

A detector with outstanding performances like the Trasgo may be veryuseful for some of these and other tasks, either working alone, in puretrasgos arrays or in hybrid arrays


Let’s see some examples


Cosmic Rays Astroparticle Physics

High energy cosmic rays interact in the highest layers of the atmosphereproducing showers of billions of secondary cosmic rays that are detectedat the earth surface

Primary cosmic ray properties (direction, mass, energy) are estimatedfrom the information measured at the Earth surface


But…showers lose many information about their birth and to estimate the propertiesof the primary cosmic ray has many unaccuracies:

The scatter of points on a plot of the average logarithm of the nuclear mass number of the primary cosmic rays versus energy clearly shows the need for more input from accelerators.

CCOU02

… and some estimations have to be done with the help of MonteCarlos


Just a few tracking detectors with enough accuracy and size may providevery significative information about the shower properties:

- Density of particles- Width of the shower front- Curvature- Mean values, dispersion, asymmetries of the arrival angles- Some electrons/muons separation

Hypothesis:The increasing of measured information, its redundancy and its accuracy

(with Trasgos) may allow to improve the estimation of the primary cosmic ray.


A very nice exercise:

It could be very interesting to repeat the pioneering experiment done by Bassi, Clark and Rossi in the fifties to determine the properties of the atmospheric showerswith the time, position and angular resolution provided by the Trasgos.


[Bassi, Clarck and Rossi: 1953]


Other uses:

As complementary detectors for underground cosmic ray experiments


Other uses:

For improving muon resolution in big spectrometers


Other uses:

Calibration of hugh observatories

For example: Antares/Km3


Other uses:

Cosmic rays and Climate

Helada en Londres en 1684

Correlations between climate and solar activity

Juan A. Garzón: 2nd. Workshop on the Trasgo Project. S. Compostela Feb. 5th-6th. 2010Juan A. Garzón: 2nd. Workshop on the Trasgo Project. Santiago de Compostela Feb. 5th-6th. 2010[http://en.wikipedia.org/wiki/Image:Structure_of_the_magnetosphere_mod.svg]

GCR: Galactic Cosmic Rays


Other uses:

Analysis of the correlation between high energy cosmic rays and the climate changes

Correlations have been observed between the themperature of the stratosphereand the flux of muons at ½ mile underground (high energy muons):High energy(narrow) showers could be measured with the help of Trasgos


A TRASGO

Where we are?


2009 was a very hard yea for the Trasgo project:- Any support from the Spanish funding Agency- Any support from the Galician funding Agency- A lot of work with the commissioning of the HADES tRPC wall

But, however, we had a few significatives advances:


Trasgo project

- Cells developmentThe groups of LIP-Coimbra and LabCAF-USC have started theR&D of sealed timing RPCs (Talks of P. Fonte & M. F.Morales)

- A poster has been accepted in the RPC2010 conference

- 12 cells from Hades available to built the 1st. prototype

- First steps done in order to open a collaboration with Dept. ofElectronics (Prof. J. Bruguera) and the GSI (Dr. M. Traxler) toimplement the tracking and the reconstruction software in a TRB


A first Geant for Trasgos is ready… and well documented at the Hades Wiki page (thanks Diego!)


TimTrack:- 1st. article accepted in Nucl. Instr. & Meth. A- An oral presentation accepted in RPC2010 Conference- Version of TimTrack for Drift Chambers ready and being tested with

HADES MDC simulated data (preliminary results encouraging)- First test done with real data:

Cosmic data from the commissioning of the HADES tRPC wall(Talk of P.Cabanelas)

- A couple of collaborations are being opened with:Leo Alonso (Dept. of Algebra /USC)Wenceslao G. Manteiga & Cesar Sanchez (Dept. of Statistics)to explore the mathematical aspects of the method

-A collaboration opened with the CESGA (C. de Supercomputaciónde Galicia) to write the code in C language and adapted to be usedwith parallel computers or multicore processors


Accepted in NIM A


1st. formalism approach


A TRASGO

Next steps


Next steps

- Advance in the development of sealed RPCs

- Analyze the cosmic data taken with the HADES tRPC wall at GSI

- Advance in the mathematical aspects of the TimTrack (?)

- Advance in the development of a new version of TRB: TTB (?)


- Build a first prototype, using:12 HADES tof tRPC cellsHADES FEE boards1 TRB V2.


Next steps

- To extend or redefine the Meiga project(This afternoon at 19h30)


Proyecto

(Mini Ensemble for Identifying GAlactic radiation )


Meiga


Expected fluxes of Cosmic Rays at the sea levelDensity/m2 Energy(eV) Frec/m2.day Radius(m) Area (m2) NClusters/day/m2

1015 0.03 30 3 103 100

1016 3 10-4 150 7 104 20

1017 3 10-6 330 3.5 105 1>51018 3 10-8 650 1.3 106 0.04

~120

1015 3 10-2 20 103 30

1016 3 10-4 100 3 104 9

1017 3 10-6 280 2.5 105 0.75> 101018 3 10-8 550 106 0.024

~40

1015 3 10-2 10 3 102 10

1016 3 10-4 80 2 104 6

1017 3 10-6 250 2 105 0.6> 171018 3 10-8 480 7 105 0.021

~16

1016 3 10-4 60 104 3

1017 3 10-6 200 105 0.3

> 30 ~31018 3 10-8 400 5 105 0.015

1016 3 10-4 50 8 103 2.4

1017 3 10-6 160 8 104 0.24

> 40 ~2.51018 3 10-8 350 4 105 0.012


Overview of the Workshop




IN MEMORIAM

Juan Antonio Rubio(1944 - 2010 )


Juan Antonio, ¡ va por ti!


THE END


Somewhere over the rainbow, skies are blue

And the dreams that you dare to dream , really do come true

(The Wizard of Oz)

Juan A. Garzón: 2nd. Workshop on the Trasgo Project. S. Compostela Feb. 5th-6th. 2010Juan A. Garzón: 2nd. Workshop on the Trasgo Project. Santiago de Compostela Feb. 5th-6th. 2010

T0

Vz

y

x L

z=0Y0

X0

X’

Y’

z

V

Technology

J A Garzon Trasgo2010 Intro