B E A M   R E Q U E S T 
 A T   T H E   P S   
 E A S T- H A L L               ====================== 
Together with your beam request for the PS East Hall beams or the SPSbeams, additional informations on your experiment or test beam activity should be given.
The additional information is of particular importance for new experiments or test beam users who were not using PS East Hall or SPS beams before.
If unsure on some items or don't know yet, please contact the SPS/PS Coordinator. 
Please read the guidelines below and consider the relevant items in
your beam request.

TEST BEAM ACTIVITY AND YOUR BEAM REQUEST
=============================================================
NAME of the test beam activity
MICE-TPG 
      
PURPOSE of the test beam activity
 detector/electronics R&D 

Test of TPC read-out with GEMs for MICE (International Muon Ionisation Cooling Experiment)  
The aim is to determine the pad response function (resolution) and efficiency of a GEM read-out system of a TPC for various gas mixtures. 
This will be carried out in the East Hall making use of the HARP TPC solenoid, field cage and gas system. The readout plane will be replaced by a set of GEMs and an hexaboard read-out. 

RESPONSIBLE PERSONS: 
Alain Blondel 
DPNC University of Geneva 
Spokesperson for the MICE experiment. CERN 75827,  164058 Alain.Blondel@cern.ch
CONTACT PERSON AT CERN
Emilio Radicioni, 
INFN Bari 
project leader and contact person for the MICE TPG tests. CERN 72338 Emilio.radicioni@cern.ch 
 
REQUESTED BEAM TIME 4 weeks in september 2003
 
  IF YOUR REQUEST EXCEEDS 14 DAYS/YEAR AT THE PS OR 7 DAYS/YEAR AT THE SPS:    
 Has your beam request already been submitted/recommended/approved         to/by a committee? NO

FOR A BEAM TEST THAT IS NOT RELATED TO ANY CERN EXPERIMENT/PROJECT ------------------------------------------------------------------- This test is related to the MICE project.
 A letter of Intent was submitted in November 2001 to the Rutherford Appleton LAboratory (UK)  and reviewed positively in March 2002, with recommendation to submit a proposal end 2002. The TPC with GEM read-out is one of the detector options for MICE. 

Is your test related to an APPROVED experiment or R&D-project of      another laboratory in a CERN member/observer/non-member state, or       is it an individual test? What are your requirements in terms of        manpower/material from CERN?


BEAM REQUIREMENTS 
T9 beam line. 
PARTICLE TYPE, MOMENTUM, POLARITY, INTENSITY, BEAM SIZE
      muons of typically 500 MeV to a few GeV. 
10^2 particles/spill
Beam Size of about 10-20 cm diameter. 
These beam cracteristics are not critical 
polarity does not matter. 


 TIME CONSTRAINTS
===================

Preferred time end of summer, e.g. month of september. It is possible that earlier use of the beam will be possible, but a cosmic trigger will be foreseen. 

EQUIPMENT AND INSTALLATION
============================
 TYPE, SIZE AND WEIGHT OF DETECTOR

a skech of the MICE-TPG test set up and its location in the East-Hall are appended. 
TPC with Gems is a light tracking detector. There will be a diffuser of 4 X0 to blow up the beam.   
The test Will require HARP TPC magnet operating, high voltage on the field cage and three racks of electronics. 

The availability of this equipment has been verified with the HARP collaboration and the HARP technical coordinator. The proposnents are members of the HARP collaboration, and own a large fraction of the electronics that will be used. 

The HARP magnet will be dismantled AFTER the test is finished, as part of the HARP dismantling plan.   

SAFETY HAZARDS
=================
FLAMMABLE/POISONOUS GASES
A variety of gases will be used: Ar C=2, Ar CH4, He CH4, He-IsoC4H10.
Will use the gas system, field cage and containment vessel of the HARP TPC. 

The HARP TPC laser would be desirable.