HALL C 12 GEV SHMS/HMS EXPERIMENTS

T. Horn
February, 2009
(last update: S. Wood - 18 January 2011)

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)

Green background indicates approved proposals. Grey background indicates conditionally approved proposal. Letters of intent and withdrawn proposals are in white.

Table 1: SHMS experiments  (PAC30 - PAC37)
Experiment Days PAC
Grade		 Targets Lengths
(cm)		 Currents
(μA)		 SHMS Angles
(°)		 SHMS Momenta
(GeV)		 Beam 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 Experiments
Fpi12 (E12-06-101)
52
A
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
SIDIS R=L/T (E12-06-104)
40
A-
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)
32
A-
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
-
 
 
 
 
 
 
g2 (E12-06-121)
29
A-
3He polarized
40
5-30
11-20
6.3-7.5
11.0
-
-
+
+
>100:1
-
 
 
 
 
 
 
PAC32 Approved and Conditionally Approved Experiments
Pion Factorization (E12-07-105)
36
A-
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
PAC34 Approved
Kaon Factorization (E12-09-011)
40
B+
LH2,LD2,Al,C
8(4)
35-90
5.6-21.4
2.7-7.1
3.8-10.9
1000:1
100:1
-
-
-
-
10.7-31.7
0.86-6.90
-
 
 
25:1
PAC35 Approved Experiments
F2 at large x (E12-10-002)
13
B+
LH2, LD2, Al
10
40
17-35
2.3-6.01
6.6, 11
 
 
 
 
 
-
 
 
 
 
 
 
Deuteron Electrodisintegration (E12-10-003)
21
B+
LD2
15
80
11.68
9.322
11
 
 
 
 
 
-
53.5-63.5
2.0-2.3
 
 
 
 
Nuclear dependence of F2 (EMC) (E12-10-008)
23
A-
LH2, LD2, Al, 3,4He, 6,7Li, 9Be, 10,11B, 12C, 40,48Ca, 63Cu
4
15-80
35, 40
1.6-6.4
11
 
 
 
 
 
-
20, 25, 30, 35, 50
1.6-6.4
 
 
 
 
PAC36 Approved Experiments
Color Transparency (E12-06-107)
26
B+
LH2, LD2, Al, 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)
36
A
3He polarized
40
15
12.5, 30.0
2.25-6.80
11.0
-
-
10:1
100:1
1000:1
-
 
 
 
 
 
 
PAC37 Approved Experiments
CSV SIDIS (E12-09-002)
22
A-
LD2,Au
10
15-50
12.50-20.21
4.5-6.8
11.0
 
 
 
200:1
 
-
 
 
 
 
 
 
SIDIS pT (E12-09-017)
32
A-
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
 
 
 
 
Proton recoil polarization (E12-11-002)
37
B+
LH2,LD2,4He
19.85-29.75
1.69-3.44
2.2, 4.4
 
 
 
 
 
-
44.0-57.4
0.84-1.67
 
 
 
 
Neutron Form Factor (E12-11-009)
50
B+
LH2,LD2
15,40
80
16.79-58.60
1.0-7.3
2.2, 4.4, 6.6, 11.0
 
 
 
 
 
-
 
 
 
 
 
 
PAC38 Approved and Conditionally Approved Experiments
Exclusive and Semi-inclusive π0 production (C12-11-102)
(69)
LH2
10
1
--
--
4.4, 6.6, 8.8, 10.8, 10.9
 
 
 
 
 
-
10.63-34.63
1.27 - 7.163
 
 
 
 
EMC d(e,e'backward p) (E12-11-107)
40
B+
LD2
1
 
 
 
 
 
 
 
 
-
 
 
 
 
 
 
Letters of intent, deferred and withdrawn proposals
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
-
-
+
+
+
-
 
 
 
 
 
 
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
 
 
 
 
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
-
 
 
 
 
 
 
GEp/GMp (PR12-09-001)
 
 
LH2
30
75
15.7-25.0
4.0-7.8
6.6, 8.8, 11.0
 
 
 
 
 
-
 
 
 
 
 
 
3N SRC (LOI-09-002)
 
 
 
 
 
 
 
 
 
 
 
 
 
-
 
 
 
 
 
 
GMn at intermediate Q2 (LOI-09-003)
 
 
 
 
 
 
 
 
 
 
 
 
 
-
 
 
 
 
 
 
J/Psi - QCD Van der Waals Forces (LOI-11-002)
 
 
 
 
 
 
 
 
 
 
 
 
 
-