MINERvA Simulation-HCAL and ECAL Calorimetry
Jaewon Park
University of Rochester
Jupiter/MINERvA Group Meeting, Oct 4, 2006
2More Different OD slots
OD frame size is kept constant V6, V7 has one more slot than
V4 Having more slot means less i
nteraction material within limited space
V9 is a extreme case of V6 and V7
V8 is similar to V4 More slots have no gain V8 is a simpler design to make
orig 5.72 5.72 5.72 11.43 17.15 45.74
v1 5.72 5.72 11.43 11.43 11.43 45.73
v4 5 7.385 9.77 12.155 11.43 45.74
v6 6.86 6.86 6.86 6.86 6.86 11.43 45.73
v7 5 5.93 6.86 7.79 8.72 11.43 45.73
v8 5 5 12.15 12.15 11.43 45.73
v9 4.2875 4.2875 4.2875 4.2875 4.2875 4.2875 4.2875 4.2875 11.43 45.73
Slot sizes
3
Theta dependence with 3GeV, 5GeV
Old data used 2.2GeV
Try with higher energy
Leakage is a function of proton beam energy
More leakage on higher energy
Is it fair to use a=1.3 for higher energy?
4
Finding calibration const with infinite OD
2.2GeV 5GeV
Orig geom + 5cm x 19 layers Previous a=1.3 was found with 2.2GeV proton beam a=1.2 seems best with 5GeV
Try to make total energy constan
t
5
Trying leakage correction
Relative calibration const for OD=1.625 intead of 1.3
Theoretically wrong, but it seems to work
Better way is using interaction length but it’s a function of energy
6
Detector Logical Region
Scint onlyECALHCALNucl. target
0θ
40θ80θ
For HCAL study, lead can be ignored
For theta=0deg, particle will hit DS-HCAL.
For theta=40deg, it passes both DS-HCAL and OD
8
Interaction length as function of theta
20 40 60 80 100thetadeg0.5
11.522.533.5int length
20 40 60 80 100thetadeg0.5
11.522.533.5int length
20 40 60 80 100thetadeg1
2
3
4
5
int length
ID
DS
OD
ID
DS+OD
ID
ID+DS+OD
9
Interaction length: Comparison with data
2.2GeV V4 OD E_od is 1.3 times scal
ed Tried to make leakag
e correction with interaction length but haven’t succeeded yet
11
Thicker ECAL
Add high theta data point 3mm lead gives ~5% decrease on resolution (previously estimated ~10%) It’ll interesting to try with different OD slot position
12
X-planeU-planeV-planeOD
XUXVXUXV
X-plane U-planeV-plane
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
PMT boxnumber
Four frames
5
8
12
15
18
1 2 10 13 16 19
4 6
7 9
11
14
17
3
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
15
5 5-1 5-2 5-3 5-4 5-5 5-6 5-7 5-8 5-9 5-11 5-12 5-13 5-14 5-15 5-16 5-17 5-18 5-19 5-20
4 4-1 4-2 4-3 4-4 4-5 4-6 4-7 4-8 4-9 4-11 4-12 4-13 4-14 4-15 4-16 4-17 4-18 4-19 4-20
3 3-1 3-2 3-3 3-4 3-5 3-6 3-7 3-8 3-9 3-10 3-11 3-12 3-13 3-14 3-15 3-16 3-17 3-18 3-20
2 2-1 2-2 2-3 2-4 2-5 2-6 2-7 2-8 2-9 2-11 2-12 2-13 2-14 2-15 2-16 2-17 2-18 2-19 3-19
1-1 2-10 2-20
1 1-2 1-3 1-4 1-5 1-6 1-7 1-8 1-9 1-10 1-11 1-12 1-13 1-14 1-15 1-16 1-17 1-18 1-19 1-20
5 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 20
4 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 20
3 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 20
2 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 20
1 1 2 3 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 20
Additional clear cable
Simple try
Need to use 10th row in PMT array