LASER CALIBRATION SYSTEM for STAR TPC Alexei Lebedev (BNL) for STAR collaboration  Design and description  Performance  Goals and results  Future developments.

Slides:

Advertisements

Similar presentations

Technical Board, CERN, 14 May 2002Børge Svane Nielsen, NBI1 TPC Laser system  Functions of the system  Basics of the design  Design updates since February.

Advertisements

TPC meeting, CERN, April 2002Børge Svane Nielsen, NBI1 Status of laser system TPC meeting, CERN, April 2002 B.S.Nielsen, J. Westergaard Niels.

1 Jim Thomas - LBL A Brief Introduction to the STAR Time Projection Chamber Jim Thomas Lawrence Berkeley National Laboratory June 4 th, 2009.

Behaviour of MicroMega chambers in magnetic field: analysis of H2 June data Outline: (0) Introduction (1) Data set used and noise filtering (2)Cluster.

ATLAS Tile Calorimeter Performance Henric Wilkens (CERN), on behalf of the ATLAS collaboration.

Laser Design Review, CERN, 27 Jan 2003Børge Svane Nielsen, NBI1 TPC Laser system  Functions of the system  Basics of the design  Construction tolerances.

TPC meeting, CERN, 7-8 October 2003Børge Svane Nielsen, NBI1 Status of laser system TPC meeting, CERN, 7-8 October 2003 Børge Svane Nielsen, Niels Lindegaard,

1 Calice Analysis 02/03/09 David Ward ECAL alignment update David Ward  A few thoughts about ECAL alignment  And related issue of the drift velocity.

Time Projection Chamber

1 Potential Hardware Improvements, Related R&D Wieman RNC LBNL TPC Review Friday 6 October 2006.

TPC status Marian Ivanov. Outlook TPC performance ExB correction Alignment Nonlinearities and edge effects Drift velocity calibration.

TPC Calibration with laser tracks B.S. Nielsen & G. Renault for the ALICE Collaboration Niels Bohr Institute.

Study of GEM-TPC Performance in Magnetic Fields Dean Karlen, Paul Poffenberger, Gabe Rosenbaum University of Victoria and TRIUMF, Canada 2005 ALCPG Workshop.

HLT & Calibration.

Assisi – 23 June 2005 Tito Bellunato 1 Status of the LHCb RICH detector and the HPD Beauty 2005 Assisi – 23 June 2005 Tito Bellunato – Università degli.

Measuring distortions in a TPC with photoelectrons D. Karlen University of Victoria & TRIUMF June 2, 2007.

1 HLT – a source of calibration data One of the main tasks of HLT (especially in the first years) –Monitoring of the detector performance –Analysing calibration.

Jianchun (JC) Wang, 08/21/99 RICH Electronics and DAQ Chip Carrier Short Cable Transition Board Long Cable Data Board Crate J.C.Wang Syracuse University.

STAR Collaboration Meeting, Nantes, July2002 SVT Analysis/Status Update Jun Takahashi – University of Sao Paulo.

28 February, 2003 STAR Collaboration meeting Status of the dE/dx calibration Yuri Fisyak.

7/19/2004FTPC Review - J. Seyboth1 FTPC Review - Software Janet Seyboth for the FTPC group DAQ Online Calibration Databases Offline Documentation FTPC.

FTPC calibration status Joern Putschke for the STAR FTPC group STAR Analysis Meeting 2002 October 22-24, 2002.

Update of Victoria TPC R&D Dean Karlen, Thanos Michailopoulos, Chris Nell, Paul Poffenberger, Gabe Rosenbaum University of Victoria and TRIUMF, Canada.

STAR Time-Projection Chamber Huan Zhong Huang Department of Engineering Physics Tsinghua University & Department of Physics and Astronomy University of.

1 TPC online  offline calibration November 2002.

C.Woody, PHENIX Upgrades, 11/10/00 A TPC for PHENIX ?? No, surely you must mean for STAR…. PHENIX, really …. ??? You must be NUTS !!! Well, wait a minute...

Report of the NTPC Test Experiment in 2007Sep and Others Yohei Nakatsugawa.

JT: 1 The Berkeley Lab STAR TPC Distortions in the Transverse Plane: An Update Jim Thomas.

Experience with analysis of TPC data Marian Ivanov.

PHENIX Drift Chamber operation principles Modified by Victor Riabov Focus meeting 01/06/04 Original by Sergey Butsyk Focus meeting 01/14/03.

1 TPC Basics H. Wieman LBNL Oct. 18, Ann. Rev. Nucl. Part. Sci : 217.

108 Mar 2007L. Musa TPC Commissioning ALICE Technical Forum, CERN, 8 th March 2007 L. Musa Outline Pre-commissioning above ground (2006) Preparing for.

STAR Collaboration Meeting Rene Bellwied – Wayne State University July 2004 SVT Calibration and STI tracking status An update of work since the SVT review.

1 Jim Thomas - LBL HFT Issues that may Bear on the Fate of the SSD & SVT presented by Jim Thomas 07/07/2006.

JT: 1 The Berkeley Lab O STAR The STAR Time Projection Chamber Jim Thomas Lawrence Berkeley National Laboratory for the STAR collaboration The Vienna Conference.

Update on TPC R&D C. Woody BNL DC Upgrades Meeting October 9, 2003.

EPS-HEP 2015, Vienna. 1 Test of MPGD modules with a large prototype Time Projection Chamber Deb Sankar Bhattacharya On behalf of.

1 STAR TPC The STAR TPC Status and Issues A brief report to the STAR Council Jim Thomas.

21 Jun 2010Paul Dauncey1 First look at FNAL tracking chamber alignment Paul Dauncey, with lots of help from Daniel and Angela.

TPC in Heavy Ion Experiments Jørgen A. Lien, Høgskolen i Bergen and Universitetet i Bergen, Norway for the ALICE Collaboration. Outlook: Presenting some.

Luca Spogli Università Roma Tre & INFN Roma Tre

STAR TPC Cluster and Hit Finder Software Raimond Snellings.

Performance of the partial STAR-SVT (Silicon Vertex Tracker) in the RHIC 2000 run Selemon Bekele* and Marcelo Munhoz** for the STAR SVT group * The Ohio.

TPC ExB distortion at LHC-ALICE experiment Yasuto Hori for the ALICE-TPC collaboration Center for Nuclear Study, University of Tokyo 1.

LCTPC photoelectron calibration system D. Karlen / U. Victoria & TRIUMF LCTPC subsystems meeting DESY, February 25-26, 2008.

TPC Studies at University of Victoria ALCPG meeting SLAC, January 2004 Dean Karlen University of Victoria / TRIUMF.

Wenxin Wang 105/04/2013. L: 4.7m  : 3.6m Design for an ILD TPC in progress: Each endplate: 80 modules with 8000 pads Spatial Resolution (in a B=3.5T.

The RICH Detectors of the LHCb Experiment Carmelo D’Ambrosio (CERN) on behalf of the LHCb RICH Collaboration LHCb RICH1 and RICH2 The photon detector:

Marian Ivanov TPC ExB and V drift calibration and alignment.

Jonathan BouchetBerkeley School on Collective Dynamics 1 Performance of the Silicon Strip Detector of the STAR Experiment Jonathan Bouchet Subatech STAR.

(Some thoughts/reminders on) Calibration/alignment scenarios for ILD/ILC Jan Timmermans – NIKHEF Amsterdam 07 Sep 2014ILD meeting Oshu1.

FTPC calibration status & plans for Y03 Joern Putschke for the STAR FTPC group STAR Calibration Meeting 2002 November 7, 2002.

David Silvermyr Lund University for the PHENIX Collaboration Early global event results using the PHENIX Pad Chambers at RHIC.

STAR SVT Self Alignment V. Perevoztchikov Brookhaven National Laboratory,USA.

1 ATLAS Muon Spectrometer Alignment LHC Days in Split, 5-9 Oct J.Krstic, M.Milosavljevic Institute of Physics, Belgrade D.Fassouliotis,C.Kourkoumelis,

Performance of the partial STAR-SVT(Silicon Vertex Tracker)in the RHIC 2000 run Selemon Bekele* and Marcelo Munhoz** for the STAR SVT group * The Ohio.

The CDF Upgrade - Incandela -CERN - January 26, 2001 slide 1 96 wire planes –(8 superlayers) –50% are 3 o stereo –Uniform drift (0.88 cm cell) –30,240.

Particle Identification of the ALICE TPC via dE/dx

4.5 GeV Au+Au Analysis Plan

C.Cheshkov 15/09/2005 Weekly Offline Meeting

Marian Ivanov TPC status report.

Laser calibration systems

Silicon Pixel Detector for the PHENIX experiment at the BNL RHIC

Preparation of LHCb for data taking

LumiCal mechanical design, integration with LDC and laser alignment

STAR Time-Projection Chamber

Analysis Test Beam Pixel TPC

HLT & Calibration.

Space-point Distortions

TPC sector alignment Marian Ivanov.

Presentation transcript:

LASER CALIBRATION SYSTEM for STAR TPC Alexei Lebedev (BNL) for STAR collaboration  Design and description  Performance  Goals and results  Future developments

Calibration goals : Sector alignment 2. Electronics performance 3. Drift velocity measurement 4. ExB effects correction 5. Others STAR LASER SYSTEM 1. Laser beam is straight line 2. Origin of each laser beam is known with ~200 microns 3. Angles between beams are known with ~0.1 mrad Results: Year Drift velocity measurement 2. Sector alignment data 3. Preliminary ExB correction Year Online drift velocity measurement 2. More precise sector alignment

* Narrow beams formed with small mirrors intercepting wide beams * Fixed small mirrors provide stable geometric origins for each beam * Drift velocity measurement with 0.02% accuracy * Alignment and distortions correction * Wide beams also illuminate central membrane STAR TPC LASER SYSTEM

Optical scheme for one TPC half

Designed laser beams position in the TPC volume

Laser event image as seen from pad plane view

Side view of laser event. Laser tracks with known Z-position used to measure drift velocity

Single laser event in the TPC ~450 laser tracks

Precise measurement of angles between laser beams in bundle. 1-3 reference marks, 4-UV laser, 5- telescope, 6-theodolite, 7 -mirror, 8-vertical stage with quadrant, 9-bundle.

Event by event Z position of membrane, illuminated by laser flash. Precise relative drift velocity monitor.

Stability of laser beam in TPC. Position of laser in pad row shows accuracy ~ 70 microns.

First correction in sagitta measurement based on laser’s straightness

Y, cm X, cm Example of inner and outer sectors misalignment

Drift velocity measurement over extended period of time Data for RHIC 2000 year run.

Drift velocity measurement for RHIC 2001 year run. Dip at day near #74 caused by gas system failure and methane partial loss.

Remote control to view and align laser’s position in different TPC points. Also this system used to monitor Forward TPC laser system.

Future developments: Hardware -automated shutter for photodiode and warm laser -automated alignment with CCD picture correlation -better quality CCD readout for Forward TPC Software -verify sector alignment, which was done from Au-Au central collisions -more in ExB correction -sector boundaries -space charge corrections