2/4/2001Ludovico Pontecorvo INFN Roma1 Plans for the H8 system test: 2001/2002 Goals for the 2001/2002 Test beam Beam layout Chamber Supports 2001 Schedule

2/4/2001 Ludovico Pontecorvo INFN Roma

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Plans for the H8 system test: 2001/2002

•Goals for the 2001/2002 Test beam

• Beam layout

• Chamber Supports

• 2001 Schedule


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H8: System Test

One should not forget that at the end, all the chambers has to fit and work together. For this reason, the integration workshop next week is of utmost importance, to ensure that we have a first test before it is too late to make changes. George Mikenberg

In H8 we should have a setup able to test all the aspects of our spectrometer from individual chambers to system aspects.Therefore we need:•A Test station (Individual chambers from BIS to BOS on rot.support):

Provide R-T relation by autocalibration, measure resolution and chamber mechanical precision etc.

•A Barrel and End Cap SectorsStudy system aspects: alignement and DCS, DAQ, installation, groundings,common behaviour of Trigger and Tracking chambers etc.


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Interested groups:MPI: Will Send and set up one BOS chamber, will partecipate in the data taking. Will partecipate in the 2002 testsRoma-Pavia: Will provide and set up one BIL chamber, Large effort on DAQ-1, Set up small area trigger and Tracker, will partecipate in the data taking.LMU: Will provide Hodo trigger, but for this year will not partecipate in the tests. Will be interested in the 2002 tests.NIKHEF : Will Provide chambers this year and the following year.They are also interested in the alignement.Frascati: Interested in testing one chamber this year, expressed interest also on electronics and DAQ-1. Greeks: Interested in the test, probably will provide a chamber but will contribute less in the data taking. Dubna: No chamber testing in 2001, could provide some help for the running of the 2001 test. In 2002 interest in testing one chamber in H8


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Beam Layout

Barrel SectorTest Stand

Old Counting Room

New Counting room

End Cap Sector


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Test station Goals for 2001

First Tests with beam tracks for the new Chambers complementary to cosmic set up.

Check of the chamber performances (tracking resolution, efficiency, strobed noise level, Gas Distribution….)Check of the mechanical construction (wire position with respect with X-Tomo Results)Check of the new electronics Check of the new DAQ-1

Trigger :10*10 and Hodoscope (large area) External Tracker Different beam angles for autocalibration (rotating Support)

Experimental requirements


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Measurements

ResolutionTime spectrafor all tubes Displacement of

wire from nominal position vs tube #

Lay 2

Lay 3

Lay 4

Lay 5

Lay 6

Autocalibration


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Test station Layout

Tracker: 2 coordinatesangular resolution ~ 2 mrad

Modified Calypso Rotating Support:

Can accommodate BIS, BIL, BOS chambers

Dimensions:Width= 400 cmHeight=475 cmLength=180 cm

Trigger Hodoscope60*100 cm2

Small area trigger10*10 cm2


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Rotating Support

Maximum weight:450 Kg

Former Calypso Support

Enlarged support

Rotation is possible for all chambers

475

180

400

BIS

BIL

BOS

180

355

320


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BOS Test

The BOS chamber will be mounted on the rotating support. It should provide the RT-Relation to the Barrel Sector Chamber. Together with the Tracker should provide tracking to the other chambers. There will be a significative portion of the chamber equipped with electronics. The chamber could be set up in the H8 Area during August by MPI people and could be tested in the first week of September.Typical test: Autocalibration: Angular scan ~100 small area trigger 30 KEvts/run Autocalibration at large angles: Angular scan ~200 @ 300 small area trigger 30 KEvts/run T0, Noise, Chamber uniformity, Mechanical precision: Large Area trigger 2 MEvts


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BIS Test

The BIS chamber will be mounted on the rotating support.The chamber could be set up in the H8 Area in the second week of September by the Greek groups and could be tested in the third week of September.Typical test: Autocalibration: Angular scan ~100 small area trigger 30 KEvts/run Autocalibration at large angles: Angular scan ~200 @ 300 small area trigger 30 KEvts/run T0, Noise, Chamber uniformity, Mechanical precision: Large Area trigger 2 MEvts


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Barrel Sector

Datcha RailsThe main aim of the test of the

barrel sector for this year will

be to have three chambers

mounted on the rails

connected to gas system

equipped with few electronic

channels.

Study of the installation

issues, perform tracking

within the sector and compare

with the tracks given by the

BOS-Tracker system.


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Barrel sector (2)

BIL chamber: Rome Pavia Groups

BML Frascati Group

BOL NIKHEF Group

Assume the chambers arrive at CERN fully equipped with Gas distribution, faraday cage and few mezanine boards installed.Install the chambers on the DATCHA Rails during August,set up gas connections, set up HV and LV connections, study the grounding and noise conditions on few read out channels.During September perform Data Taking together with the test station chambers.


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Work to be Done: 2001

Infrastruct.: Move counting room, Install new Gas system, Install DATCHA Rails, Modify Calypso rotating support, study interfaces between detectors and

supports Detectors: Install small area trigger, Recable Hodo Trigger,

Recable and set up Tracker, Install Autocalibration Chambers, Install Sector chambers.

DAQ: Install DAQ-1 Hardware and Software Monitoring: Implement monitoring task on DAQ-1 system DCS: Implement at least the DCS ambient parameters

reading. Offline: Implement the new data format decoding,

and use data to test the calibration and tracking programs (e.g. CALIB).


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Work Schedule


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Goals for the Barrel Sector in 2002

Install a full Barrel Sector: 2 BIL , 2 BML and 2 BOL chambers on

DATCHA Rails, equippe the chambers with electronics. Install new Gas Sysytem with recirculation Install the full chamber DCS. Install alignement system and test it with tracks Install trigger stations together with BML and BOL, Study

installation issues, working condition and interferences between the

detectors. Install first level trigger prototype and test with tracks Complete the DAQ -1, RPC Read-Out, test of the first and high

level triggers.


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Possible Beam Layout:2002

Full Barrel sectorMagnet

20 GeV

50 GeV


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Possibility to replace the test station with a Magnet:Beam angular spread for Autocalibration.Test the alignement system with different tracks angleneeded to test alignement in 3 dimensions.

Need to use low momentum beams… Low rates?

Why a Magnet?

Documents

2/4/2001Ludovico Pontecorvo INFN Roma1 Plans for the H8 system test: 2001/2002 Goals for the 2001/2002 Test beam Beam layout Chamber Supports 2001 Schedule