HALL C 12 GEV SHMS/HMS EXPERIMENTS

T. Horn
February, 2009 (last update: 9 October 2009)

SHMS parameters

  • SHMS central momentum: 2-11 GeV (-10% to +22% acceptance)   

  • SHMS scattering angle: 5.5-40 degrees   

  • Target length acceptance of 30cm at 90 degrees   

HMS parameters

  • HMS central momentum: 1-7.3 GeV (-9% to +9% acceptance)   

  • HMS scattering angle: 10.5-85 degrees   

  • Target length acceptance of 10cm at 90 degrees   

Minimum Opening Angle: 17.5 degrees (HMS at 12 degrees when SHMS at 5.5 degrees)

Table 1: SHMS experiments  (PAC30 and PAC32)
Experiment Targets Lengths
(cm)		 Currents
(μA)		 SHMS Angles
(°)		 SHMS Momenta
(GeV)		 Energies
(GeV)		 π+, K+ rejection
heavy gas Cer		 p, K+ rejection
aerogel		 e-, π- rejection
noble gas Cer		 e-, π- rejection
lead-glass Cal		 e-, π- rejection
total		 PID
quartz		 HMS Angles
(°)		 HMS Momenta
(GeV)		 p, K+ rejection
aerogel		 e-, π- rejection
gas Cer		 e-, π- rejection
lead-glass Cal		 e-, π- rejection
total
PAC30 Approved and Conditionally Approved Experiments
Fpi12 (E12-06-101)
LH2, LD2, Al
8 (4)
15-90
5.5-13
2.261-8.070
2.8-10.9
104:1
(+)
20:1
225:1
4500:1
+
10.62-47.24
0.53-4.72
-
 
 
25:1
R=L/T (E12-06-104)
LH2, LD2, Al
10
50
5.5-20.0
5.4-5.8
6.6-11.0
+(?)
(+)
10:1
100:1
1000:1
+
10.57-40.40
1.27-5.67
 
 
 
1000:1
x>1 (E12-06-105)
LD2, He3, He4, Be(2%), C(1.5%), Cu(6%), Au(6%)
4
20-80
8-26
4.8-10.6
1.5-11.0
-
-
10:1
10:1
>100:1
-
 
 
 
 
 
 
Color Transparency (E12-06-107)
LH2, LD2, C, Cu
15
80
5.52-22.73
5.11-9.64
8.8, 11.0
104:1
1000:1 (100:1)
-
-
-
+
 
 
 
 
 
 
A1n (E12-06-110)
3He polarized
40
15
12.5, 30.0
2.25-6.80
11.0
-
-
10:1
100:1
1000:1
-
 
 
 
 
 
 
g2 (E12-06-121)
3He polarized
40
5-30
11-20
6.3-7.5
11.0
-
-
+
+
>100:1
-
 
 
 
 
 
 
PAC30 LOI
GEp (LOI-06-103)
LH2
30
75
12.1-25
4.03-8.35
6.6-11.0
-
-
-
-
-
-
 
 
 
 
 
 
Pion high pT (LOI-06-104)
LH2
8
90
10.06-38.474
1.794-2.979
6.0, 10.9
+
+
+
+
+
(+)
 
 
 
 
 
 
Photodisintegration LD2 (LOI-06-105)
LH2, LD2
15
30
12.98-28.09
2.473-6.699
2.268-6.667
+
-
-
-
-
(+)
 
 
 
 
 
 
EMC effect (LOI-06-106)
LH2, LD2, He3, He4, Li, Be, C, Al, Ca, Cu, Ag, Au
4
25-80
20-40
1.3-4.5
11.0
-
-
+
+
+
-
 
 
 
 
 
 
PAC32 Approved and Conditionally Approved Experiments
Pion Factorization (E12-07-105)
LH2, LD2, Al
8
90
5.5-23.05
2.42-8.52
3.7-10.9
104:1
(+)
10:1
100:1
1000:1
(+)
15.4-56.2
1.01-4.92
-
 
 
25:1
DIS-parity (E12-07-102)
LH2,LD2
20,40
10,85
13.5
4.9-6.7
6.6,11
-
-
10:1
100:1
1000:1
-
 
 
 
 
 
 
J/psi production near threshold (E12-07-106)
LH2,LD2,Be,C,Al,Cu,Ag,Au
10% RL
50
8.0-19.1
4.5-8.5
11,10.2,8.8
-
-
10:1
100:1
1000:1
-
 
 
 
 
 
 
Hadronization in Nuclei (E12-07-101)
LH2,LD2,C, Cu, W
15(liquid),
0.75,0.072,0.02(solid)
50-100
10.0, 12.61, 14.39
2.63-3.45
11
100:1
-
 
 
1000:1
-
13-19
5.0
 
 
 
 
PAC34 Approved and Conditionally Approved Experiments
Kaon Factorization (E12-09-011)
LH2,LD2,Al,C
8(4)
35-90
5.6-21.4
2.7-7.1
3.8-10.9
1000:1
100:1
-
-
-
-
0.86-6.90
10.7-31.7
-
 
 
25:1
SIDIS pT (PR12-09-017)
LH2,LD2,Al
10
50
5.5-30.5
1.5-5.0
8.8, 11
 
200:1
 
250:1
250:1
-
12.59-21.26
5.60-5.67
 
 
 
 
GEp/GMp (PR12-09-001)
LH2
30
75
15.7-25.0
4.0-7.8
6.6, 8.8, 11.0
 
 
 
 
 
-
 
 
 
 
 
 
Neutron Form Factor (PR12-09-006)
LH2,LD2
15,40
80
16.79-58.60
1.0-7.3
2.2, 4.4, 6.6, 11.0
 
 
 
 
 
-
 
 
 
 
 
 
CSV SIDIS (PR12-09-002)
LD2,Au
10
15-50
12.50-20.21
4.5-6.8
11.0
 
 
 
200:1
 
-
 
 
 
 
 
 
PAC34 LOI
3N SRC (LOI-09-002)
 
 
 
 
 
 
 
 
 
 
 
-
 
 
 
 
 
 
GMn at intermediate Q2 (LOI-09-003)
 
 
 
 
 
 
 
 
 
 
 
-