The run is aimed at semi-inclusive deep-inelastic scattering (SIDIS) of muons off transversely polarised 6LiD target, as described in our proposal or in this talk. The experiment is located in the Experimental Hall North 2 (EHN2), building 888, on the Prévessin site of CERN.


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Run schedule

31. 5. Dry run Set up and test detector front-ends.
28. 6. Commissioning First beams for NA commissioning.
12. 7. Beam to NA for physics. Spectrometer commissioning with beam.
6. 9. Physics data taking starts (originally 1. 8.)
6. 10. End of the run

Important contacts

Calling from outside CERN:

The data are taken from the CMAD2012 MySQL database on pccodb00 and can be updated there.

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Responsibility Name Phone numbers
Control room (892-R-D10) 7 8058
DEXSO/Gas TESSAROTTO Fulvio 16 4826
Deputy run coordinator
EHN2 (888) TSO RAE Bastien 16 7388
EXSO LEVORATO Stefano 16 4850
Run Coordinator MATOUŠEK Jan 16 0810, 6 6282
Spokesperson PARSAMYAN Bakur 16 4463
Spokesperson TESSAROTTO Fulvio 16 4826
Technical Coordinator LEVORATO Stefano 16 7431, 16 4850
Week coordinator 16 4863
SPS Control Room (CCC) 7 7500
Polarised Target Coordinator DOSHITA Norihiro 16 8996
Polarised target expert PEŠEK Michael 16 3935
DAQ ZEMKO Martin 16 4482
DCS PIRES Christophe 16 4872, 6 6506

Useful links

Experimental setup

COMPASS setup, upstream half

COMPASS setup, upstream half

COMPASS setup, downstream half

COMPASS setup, downstream half

The experimental setup consists of a beam telescope, solid-state transversely 6LiD target and a two-stage magnetic spectrometer. The spectrometer has wide angular coverage and robust tracking. Particle identification is ensured by muon filters and a RICH detector. It contains also electromagnetic and hadronic calorimeters.