SoLID DDVCS

SoLID

Collaboration

• Alexandre Camsonne, Silviu Covrig, Mark K. Jones, Jian-Ping Chen (JLAB)
• Marie Boer, Gabriel Charles, Raphael Dupre, Michel Guidal, Dominique Marchand,Carlos Mu~noz Camacho, Silvia Niccolai, Eric Voutier ( IPN Orsay )
• Zhiwen Zhao (ODU)
• Kondo Gnanvo, Nilanga Linayage, Chao Gu (UVA)
• Zhihong Ye (Duke)
• Evaristo Cisbani (INFN Sanita)
• Guido Maria Urcioli ( INFN Roma )
• Vincenzo Bellini, Concetta Maria Sutera ( INFN Catagna )
• Hamza Atac, Adam Blomberg, Sylvester Joosten, Zein-Eddine Meziani, Michael Paolone, Nikos Sparveris (Temple)
• Anthony W. Thomas (CSSM Adelaide Australia)
• Maxime Defurne, Herve Moutarde, Franck Sabatie (IRFU CEA Saclay)
• Malek Mazouz (Faculte des sciences Monastir Tunisia )
• Paul Gueye (Hampton University)
• Whitney Armstrong (ANL)
• Thomas Hemmick (Stony Brook University )

Letter of intent submitted to PAC43

latest version

[DDVCS Theory TAC report]

Experimental TAC report

PAC 43 report

Mailing list

Register to the mailing list at :

https://mailman.jlab.org/mailman/listinfo/Solid_ddvcs

Documents

Papers

• Double deeply virtual Compton scattering off the nucleon

 M. Guidal (Orsay, IPN), M. Vanderhaeghen (Mainz U., Inst. Kernphys.). Aug 2002. 4 pp.
 Published in Phys.Rev.Lett. 90 (2003) 012001
 DOI: 10.1103/PhysRevLett.90.012001
 e-Print: hep-ph/0208275 PDF  [1]

• Exclusive electroproduction of lepton pairs as a probe of nucleon structure

 A.V. Belitsky (Maryland Uni.), D. Mueller (Wuppertal Uni.). Oct 2002. 4 pp.
 Published in Phys.Rev.Lett. 90 (2003) 022001 [2]

• Probing generalized parton distributions with electroproduction of lepton pairs off the nucleon

 A.V. Belitsky (Maryland Uni.), D. Mueller (Wuppertal Uni.). Oct 2002. 4 pp.
 Published in Phys.Rev.D 68 (2003) 116005

• Unraveling hadron structure with generalized parton distributions

 A.V. Belitsky (Arizona State U.), A.V. Radyushkin (Jefferson Lab & Old Dominion U.). Apr 2005. 370 pp.
 Published in Phys.Rept. 418 (2005) 1-387
 JLAB-THY-04-34
 DOI: 10.1016/j.physrep.2005.06.002
 e-Print: hep-ph/0504030 | PDF

Presentation talks

INT workshop September 30th 2009, first mention of DDVCS with SoLID : The JLab Hall A experimental program at 12 GeV [3]

DVCS collaboration meeting IPN Orsay November 2012 pptx

Hall A collaboration meeting December 2012 DDVCS with SoLID pdf

Study of feasibility of DDVCS with SuperBigBite -DVCS collaboration meeting - December 2013 pdf

SBS collaboration - DDVCS update - July 7-8 2014 [4]

The Sixth Workshop on Hadron Physics in China and Opportunities in US, Lanzhou July 24, 2014 : Overview of the Generalized Parton Distributions program pdf

Proposals

• MEMUS – A large solid angle detector for ELFE ps

 Nuclear Instruments and Methods in Physics Research 
 Section A: Accelerators, Spectrometers, Detectors and Associated
 Equipment, Volume 409, Issue 1, Pages 400-401
 G Audit et al.

• Solenoidal LOI PAC 27 [5]

Logbook

DDVCS ELOG

SoLID

[Setup picture archive]

Event generator

use grape-dilepton for BH as signal rate estimation, refer to Dilepton

Simulation

refer to general "solid_gemc" instruction https://hallaweb.jlab.org/wiki/index.php/Solid_Software

full simulation https://hallaweb.jlab.org/wiki/index.php/SoLID_Software_Detector_Simulation#full_simulation

subsystem simulation and study https://jlabsvn.jlab.org/svnroot/solid/subsystem/muon

data file sharing

• BH file

/w/work6501/work_halla/BH/grape-dilepton_work/BH_muon_3fold_decaypairelectron_deg5-50/grp.root
see details how to run it and analysis result at https://jlabsvn.jlab.org/svnroot/solid/evgen/BH/readme

• background simulation

/w/work6501/zwzhao/solid/solid_svn/solid/study/background/JPsi_LH2_JLAB_VERSION_1.2/pass3/

Repository for software and proposal

You need a GitHub account to acces the repository, send a mail to camsonne [at] jlab.org with your GitHub username so I can add you to the repository :

https://github.com/camsonne/SoLID-DDVCS

Google Drive for file sharing DDVCS

Magnet

http://www.lns.cornell.edu/public/lab-info/coil.html

Tracking

Superconducting detectors

Pizza Seminar September 24th 2014 [pptx]

Readout

Front End

• MPD
• SRS
• CLAS12 readout

ASICS

• APV25
• DREAM
• VMM2

Muon detector

• HCAL SBS

SuperBigBite DOE review november 2014

SuperBigBite Hadron Calorimeter [[6]]

15 cm x 15 cm x 100 cm

• Minerva [7]

• CLEO muon detector

http://www.lns.cornell.edu/public/lab-info/mu.html

http://www.hep.umn.edu/cleo/CLEOII_NIM.pdf

http://www.sciencedirect.com/science/article/pii/016890029290771U/pdf?md5=cc5edbfce758ba6b222c27709b85f2ce&pid=1-s2.0-016890029290771U-main.pdf

• Phenix

http://www.phenix.bnl.gov/WWW/muon/notes/phenix-muon-96-12.html

• DHCAL (ILC)

https://agenda.linearcollider.org/event/4391/session/22/contribution/19/material/slides/0.pdf

http://hal.archives-ouvertes.fr/docs/00/42/93/10/PDF/LAPP-EXP-2009-11.pdf

http://omega.in2p3.fr/index.php/products/hardroc-front-end-chip.html

Statistical requirement

• Asymmetry

In the case of small asymmetries, the statistical uncertainty on the measurement of an asymmetry reduces to

<math> \delta A = 1 / \sqrt{N} </math>

telling that 2500 Events are required to deliver a 2% absolute uncertainty on the measurement of an asymmetry. In order to obtain a reasonable understanding of the <math> \varphi </math> distribution, 10 bins in the out-of-plane angles are required asking then about 25000 Events at a given fixed kinematics setting defined by <math> ( Q^2, \xi, \eta, t) </math>.

CAD files CLEO magnet

https://hallaweb.jlab.org/dvcslog/DDVCS/48

You can use FreeCad to open the STEP file

http://www.freecadweb.org/

[CLEO magnet files]

[Scans of paper schematics]