Maxwell/Garfield Test Results

    Last Update: July 27, 1998

    GEM double cones - 140u/90u/60u - 50u/4u - 1.4kV:

  • Integration Parameter:
    Simulated Gain (No. of sec. Electrons) as Function of 
    E_coll, Gas-mix, Int-par for (V(GEM) = 500):  
    
    • V(GEM) = 500 V ps-file (June 28 1998)
    • Comparison of V(GEM) 400 and 500 V ps-file (June 29 1998)

  • Accuracy Parameter:
    Simulated Gain as Function of acc-par 
    for V(GEM) = 500, a75c25 gas and 4 different values of E-coll 
    
    • using modified Garfield: ps-file (July 4 1998)
    • using standard version 6.20 of Garfield: ps-file (July 27 1998)

    Newly implemented avalanche-ntuple:

  • Initial Test Plots:
    Setting:  V(GEM) = 500, a75c25 and a50c50 gas,
    5 different values of E-coll, (default acc/int-par)  
    
    • Garfield Gain w&w/o Transparency Correction: c75a25/c50a50 (Sep 4 1998)
    • E-Field - Townsend Relation (c75a25): 20 Intervals (default) / 50 Intervals
    • With Int-Par as 'suggested' in the manual (mc-dist 0.0002): c75a25/c50a50 (Sep 5 1998)

  • Results (1): Gain as function of Coll.Field for various parameter settings:
    Setting:  V(GEM) = 500, a75c25/a70c30/a50c50 gas,
    
    • Attachment/townsend/monte-carlo: c75a25/c70a30/c50a50 (Sep 6 1998)
    • Noattachment/townsend/monte-carlo: c75a25/c70a30/c50a50 (Sep 6 1998)
    • Attachment/townsend/runge-kutta: c75a25/c70a30/c50a50 (Sep 6 1998)

  • Results (2): Gain as function of GEM Voltage and Gas Mixture for Int-par 0.0002cm.
    Setting:  V(GEM) = 400/500, a75c25/a70c30/a50c50 gas,
    
    • Attachment/townsend/monte-carlo: (Sep 6 1998)

  • Control Plots (1): Vary Parameters.
    Setting:  V(GEM) = 500, a75c25 gas, coll.field 15kV/cm,
    (Full Stepping Information).
    
    • Noattachment/twn/mc: (Sep 6 1998)
    • Attachment/twn/mc/int-par0.0002cm: (Sep 6 1998)
    • Attachment/twn/mc/int-par0.0001cm: (Sep 6 1998)
    • Attachment/twn/mc/int-par0.0002cm/E/p10-1000000: (Sep 6 1998)
    • Attachment/twn/mc/int-par 0.0002 cm/E/p10-1000000/N-E/p50: (Sep 6 1998)

  • Control Plots (2): Vary coll.field for various parm. settings
    Setting:  V(GEM) = 500, a70c30 gas, 
    (Electron Start and Endpoint Information only)
    
    • Att/twn/mc/int-par0.0002cm: coll.field 2kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.0002cm: coll.field 5kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.0002cm: coll.field 10kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.0002cm: coll.field 15kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.0002cm: coll.field 20kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.00015cm: coll.field 2kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.00015cm: coll.field 5kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.00015cm: coll.field 10kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.00015cm: coll.field 15kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.00015cm: coll.field 20kV/cm (Sep 6 1998)
    • Att/twn/mc/mc-coll.100: coll.field 2kV/cm (Sep 6 1998)
    • Att/twn/mc/mc-coll.100: coll.field 5kV/cm (Sep 6 1998)
    • Att/twn/mc/mc-coll.100: coll.field 10kV/cm (Sep 6 1998)
    • Att/twn/mc/mc-coll.100: coll.field 15kV/cm (Sep 6 1998)
    • Att/twn/mc/mc-coll.100: coll.field 20kV/cm (Sep 6 1998)
    • Att/twn/mc/mc-coll.50: coll.field 2kV/cm (Sep 6 1998)
    • Att/twn/mc/mc-coll.50: coll.field 5kV/cm (Sep 6 1998)
    • Att/twn/mc/mc-coll.50: coll.field 10kV/cm (Sep 6 1998)
    • Att/twn/mc/mc-coll.50: coll.field 15kV/cm (Sep 6 1998)
    • Att/twn/mc/mc-coll.50: coll.field 20kV/cm (Sep 6 1998)

  • Control Plots (3): Vary coll.field for various parm. settings
    Setting:  V(GEM) = 500, a70c30 gas, 
    (Full Stepping Information).
    
    • Att/twn/mc/int-par0.0002cm: coll.field 2kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.0002cm: coll.field 5kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.0002cm: coll.field 10kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.0002cm: coll.field 15kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.0002cm: coll.field 20kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.00015cm: coll.field 2kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.00015cm: coll.field 5kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.00015cm: coll.field 10kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.00015cm: coll.field 15kV/cm (Sep 6 1998)
    • Att/twn/mc/int-par0.00015cm: coll.field 20kV/cm (Sep 6 1998)
    • NoAtt/twn/mc/int-par0.0002cm: coll.field 2kV/cm (Sep 6 1998)
    • NoAtt/twn/mc/int-par0.0002cm: coll.field 5kV/cm (Sep 6 1998)
    • NoAtt/twn/mc/int-par0.0002cm: coll.field 10kV/cm (Sep 6 1998)
    • NoAtt/twn/mc/int-par0.0002cm: coll.field 15kV/cm (Sep 6 1998)
    • NoAtt/twn/mc/int-par0.0002cm: coll.field 20kV/cm (Sep 6 1998)
    • NoAtt/twn/mc/int-par0.00015cm: coll.field 2kV/cm (Sep 6 1998)
    • NoAtt/twn/mc/int-par0.00015cm: coll.field 5kV/cm (Sep 6 1998)
    • NoAtt/twn/mc/int-par0.00015cm: coll.field 10kV/cm (Sep 6 1998)
    • NoAtt/twn/mc/int-par0.00015cm: coll.field 15kV/cm (Sep 6 1998)
    • NoAtt/twn/mc/int-par0.00015cm: coll.field 20kV/cm (Sep 6 1998)

  • E-Field - Townsend Relation using N-E/p Parameter:
      
    • statement:
      magboltz N-E/P 100 
      (20,50,100,200). This is wrong !!! statement should be in connection with definition of gas mixture:
      magboltz argon 70 co2 30 N-E/P 100
      : (Sep 8 1998)

  • Results (3): Gain as function of E-coll. varying N-E/P (30,100) and Interpolation method (Newton/Splines).
    Setting:  V(GEM) = 500, int-par 0.0002cm
    
    • Att/townsend/mc: (Sep 9 1998)

  • Results (4): Gain as function of E-coll. varying MC-Coll. 10,20,50,100,200 with MXSTCK increased from 5 to 50.
    Setting:  V(GEM) = 500,
    
    • Att/townsend/mc: (Sep 12 1998)

  • Garfield Output Files

  • Collection of documents used for DPG summary on the GEM meeting 04/06/98

    M. Hildebrand (Uni Heidelberg) Talk German Physics Society (DPG) Meeting, Freiburg, March 22-26

    Link to M .Hildebrand

    Talk M. Hildebrand (Heidelberg) page 1

    Talk M. Hildebrand (Heidelberg) page 2

    Talk M. Hildebrand (Heidelberg) page 3

    Talk M. Hildebrand (Heidelberg) page 4

    Talk M. Hildebrand (Heidelberg) page 5

    Talk M. Hildebrand (Heidelberg) page 6

    Talk M. Hildebrand (Heidelberg) page 7

    Talk M. Hildebrand (Heidelberg) page 8

    Talk M. Hildebrand (Heidelberg) page 9

    Talk M. Hildebrand (Heidelberg) page 10

    Talk M. Hildebrand (Heidelberg) page 11

    Talk M. Hildebrand (Heidelberg) page 12

    Talk M. Hildebrand (Heidelberg) page 13

    Talk M. Hildebrand (Heidelberg) page 14

    Talk M. Hildebrand (Heidelberg) page 15

    Talk M. Hildebrand (Heidelberg) page 16

    Talk M. Hildebrand (Heidelberg) page 17

    2.) Sauli et al., Paper Draft (March 4 98)

    Link to CERN GEM Group

    GEM Paper Draft Sauli et al. March 98 page 1

    GEM Paper Draft Sauli et al. March 98 page 3

    GEM Paper Draft Sauli et al. March 98 page 4

    GEM Paper Draft Sauli et al. March 98 page 5

    GEM Paper Draft Sauli et al. March 98 page 6

    GEM Paper Draft Sauli et al. March 98 page 7

    GEM Paper Draft Sauli et al. March 98 page 8

    GEM Paper Draft Sauli et al. March 98 page 9

    GEM Paper Draft Sauli et al. March 98 page 10

    GEM Paper Draft Sauli et al. March 98 page 11

    GEM Paper Draft Sauli et al. March 98 page 12

    GEM Paper Draft Sauli et al. March 98 page 13

    3.) Bellazini et al., Paper contributed to Wire Chamber Conference, Vienna

    Link to PISA MSGC Group

    ps-file (10 MB)