E08-014 Run Plan
From Hall A Wiki
Revision as of 15:14, 24 April 2011 by Johna (Talk | contribs) (→2nd phase: Helium-3 and Calcium running (Starting on April 21))
Contents
Kinematics Plot
Reconfiguration, Commissioning and Calibration 1st phase (Starting on April 15 at 9:30am)
- Energy change: 4 pass --> 3 pass (2-3 hours)
1) Change Right HRS polarity to negative
2) Left & Right HRS at kin 5.2: theta=25deg, Po=2.995GeV/c (RQ3=2.6273GeV/c)
- Set up for maximum current (95 uA)
- BCM calibration (1 hour)
1st phase: Helium-4, Deuterium and Carbon running
The 4He and 2H might not be ready for beam simultaneously. Therefore, the plan is to take data on 4He, then move to carbon. During the data taking on carbon, lower the cryo-load on 4He and prepare 2H for beam (it should take 5 min). Take data on 2H. Then on optics. Then switch kinematics and do the same thing in reverse order: Optics --> 2H --> Carbon --> 4He.
| Kin | Ein [GeV] | Po (GeV) | Theta | x-region | Q^2-range | Target | I (uA) | prescale | # good evts | time(hrs) | total time | # evts accumulated | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tight cuts | Loose cuts | ||||||||||||
| 5.2 | 3.356 | 2.995 (RQ3=2.6273GeV/c, Iset=1049.2A, Iread=1045.4A) | 25.0 | 3N SRC | 1.82-2.00 |
4He (#1) Carbon (#2) |
95 95 |
1 1 |
64500 64200 |
12.6
4.2
|
16.8 |
61970 94837 |
130001 ? |
| 5.0 | 3.356 | 2.505 (RQ3=2.1975GeV/c, Iset=877.55A, Iread=874.43A) | 25.0 | QE | 1.52-1.63 |
4He (#1) Carbon (#2) 2H (#3) BeO (#4) Optics (#5) |
95 95 60 5 5 |
1 1 1 1 1 |
n/a n/a n/a n/a n/a |
1
1
1
10-15min
10-15min
|
3 + 0.5 |
? ? ? n/a n/a |
? ? ? n/a n/a |
- Rate/Boiling study on 4He, deuterium and carbon (4 hours)
| Kin | Ein [GeV] | Po (GeV) | Theta | x-region | Q^2-range | Target | I (uA) | prescale | # good evts | time(hrs) | total time | # evts accumulated | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tight cuts | Loose cuts | ||||||||||||
| 5.1 | 3.356 | 2.795 (RQ3=2.4519GeV/c, Iset=979.17A, Iread=975.63A) | 25.0 | 2N SRC | 1.70-1.82 |
4He (#3) Carbon (#2) 2H (#1) |
95 95 60 |
1 1 1 |
482900 475400 553200 |
2.9
1.1
2.9
|
6.9 |
342000 833000 600000 |
? ? ? |
- Request Escorted Controlled Access for HRS motion
| Kin | Ein [GeV] | Po (GeV) | Theta | x-region | Q^2-range | Target | I (uA) | prescale | # good evts | time(hrs) | total time | # evts accumulated | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tight cuts | Loose cuts | ||||||||||||
| 3.2 | 3.356 | 3.055 (RQ3=2.6800GeV/c, Iset=1066.4A, Iread=1070.3A) | 21.0 | 3N SRC | 1.31-1.41 |
4He Carbon |
95 95 |
1 1 |
213200 204000 |
0.8
0.3
|
1.1 |
236000 250000 |
? ? |
| 3.1 | 3.356 | 2.905 (RQ3=2.5484GeV/c, Iset=1017.74A, Iread=1014.04A) | 21.0 | 2N SRC | 1.25-1.34 |
4He Carbon 2H BeO optics |
95 95 45 5 5 |
1 1 1 1 1 |
1000000 1000000 1000000 n/a n/a |
2.0
1.0
2.0
10-15min
10-15min
|
2.0 + 0.5 |
1200000 2000000 1255000 n/a n/a |
? ? ? n/a n/a |
- BCM calibration - Request Escorted Controlled Access for HRS motion
| Kin | Ein [GeV] | Po (GeV) | Theta | x-region | Q^2-range | Target | I (uA) | prescale | # good evts | time(hrs) | total time | # evts accumulated | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tight cuts | Loose cuts | ||||||||||||
| 4.2 | 3.356 | 3.035 (RQ3=2.6624GeV/c, Iset=1063.22A, Iread=1059.38A) | 23.0 | 3N SRC | 1.56-1.68 |
4He Carbon Dummy-4cm |
95 95 40 |
1 1 1 |
62400 60900 60000 |
1.6
0.6
1.5
|
3.7 |
41700 41000 6500 |
? ? ? |
| 4.0 | 3.356 | 2.600 (RQ3=2.2808GeV/c, I=????A) | 23.0 | QE | 1.34-1.44 |
optics |
5 |
1 |
n/a |
? |
? |
n/a |
n/a |
| 4.2 | 3.356 | 3.035 (RQ3=2.6624GeV/c, Iset=1063.22A, Iread=1059.38A) | 23.0 | 3N SRC | 1.56-1.68 |
Dummy-4cm |
10 |
1 |
n/a |
till end
|
n/a |
13900 |
? |
Target switch: 3 days down (Starting on April 19 at 8am)
2nd phase: Helium-3 and Calcium running (Starting on April 21)
The time listed in red is the total time needed assuming both HRSs running.
- Establish high current on 3He. Desired current is 120uA. If beam not stable or the target cannot handle 120uA, go down in beam current till stable conditions.
| Kin | Ein [GeV] | Po (GeV) | Theta | x-region | Q^2-range | Target | I (uA) | prescale | # good evts | time(hrs) | total time | # evts accumulated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5.2 | 3.356 | 2.995 (RQ3=2.6273GeV/c, Iset=1049.2A, Iread=1045.4A) | 25.0 | 3N SRC | 1.82-2.00 |
3He-20cm (#1) Carbon-5mm (#3) Dummy-20cm (#2) |
120 95 40 |
1 1 1 |
67000 65000 n/a |
33.0
3.0
12.0
|
48.0 |
77000 112000 ? |
| 5.1 | 3.356 | 2.795 (RQ3=2.4519GeV/c, Iset=979.17A, Iread=975.63A) | 25.0 | 2N SRC | 1.70-1.82 |
3He-20cm (#1) Carbon-5mm (#2) Ca-40 (nat.)(#4) Ca-48 (#5) Dummy-20cm (#3) |
120 95 40 40 40 |
1 1 1 1 1 |
500000 490000 480000 480000 n/a |
6.0
0.8
2.5
2.6
2.0
|
13.9 |
? ? ? ? ? |
| 5.0 | 3.356 | 2.505 (RQ3=2.1975GeV/c, Iset=877.55A, Iread=874.43A) | 25.0 | QE | 1.52-1.63 |
3He-20cm (#1) Carbon-5mm (#2) Ca-40 (nat.) (#5) Ca-48 (#6) dummy-20cm (#3) dummy-10cm (#4) BeO (#7) Optics (#8) |
120 95 40 40 40 40 5 5 |
1 1 1 1 1 1 1 1 |
n/a n/a n/a n/a n/a n/a n/a n/a |
1
1
0.5
1
20min
20min
10-15min
10-15min
|
4.4 + 0.5 |
? ? ? ? ? ? n/a n/a |
- Boiling/rate-dependence study on 3He and 12C combined with Kin# 5.0 - Calcium position-dependence scan
| Kin | Ein [GeV] | Po (GeV) | Theta | x-region | Q^2-range | Target | I (uA) | prescale | # good evts | time(hrs) | total time | # evts accumulated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3.2 | 3.356 | 3.055 (RQ3=2.6800GeV/c, Iset=1066.4A, Iread=1070.3A) | 21.0 | 3N SRC | 1.31-1.41 |
3He-20cm Carbon-5mm Ca-40 Ca-48 Dummy-20cm |
120 95 40 40 40 |
1 1 1 1 1 |
260000 192000 186000 180000 n/a |
3.0
0.3
0.8
0.8
1.0
|
6.0 |
? ? ? ? ? |
| 3.1 | 3.356 | 2.905 (RQ3=2.5484GeV/c, Iset=1017.74A, Iread=1014.04A) | 21.0 | 2N SRC | 1.25-1.34 |
3He-20cm Carbon-5mm Ca-40 (nat.) Ca-48 Dummy-20cm BeO optics |
120 95 40 40 40 5 5 |
1 1 1 1 1 1 1 |
3600000 3000000 2800000 2800000 n/a n/a n/a |
2.5
0.6
1.0
1.0
1.0
10-15min
10-15min
|
6.1 + 0.5 |
? ? ? ? ? n/a n/a |
| Kin | Ein [GeV] | Po (GeV) | Theta | x-region | Q^2-range | Target | I (uA) | prescale | # good evts | time(hrs) | total time | # evts accumulated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 7 | 3.356 | 2.835 (RQ3=2.4870GeV/c, Iset=????A, Iread=????A) | 29.0 | 3N SRC | 2.30-2.47 |
3He-20cm Carbon-5mm Dummy-20cm BeO Optics |
120 95 40 5 5 |
1 1 1 1 1 |
600000 530000 n/a n/a n/a |
91.0
8.5
32.0
10-15min
10-15min
|
131.5 + 0.5 |
? ? ? n/a n/a |
| Kin | Ein [GeV] | Po (GeV) | Theta | x-region | Q^2-range | Target | I (uA) | prescale | # good evts | time(hrs) | total time | # evts accumulated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 4.2 | 3.356 | 3.035 (RQ3=2.6624GeV/c, Iset=1063.22A, Iread=1059.38A) | 23.0 | 3N SRC | 1.56-1.68 |
3He-20cm Carbon-5mm Ca-40 Ca-48 Dummy-20cm |
120 95 40 40 40 |
1 1 1 1 1 |
69000 63000 58000 58000 n/a |
6.0
0.6
1.6
1.7
4.0
|
14.0 |
? ? ? ? ? |
| 4.1 | 3.356 | 2.855 (RQ3=2.5045GeV/c, Iset=????A, Iread=????A) | 23.0 | 2N SRC | 1.47-1.58 |
3He-20cm Carbon-5mm Ca-40 (nat.) Ca-48 Dummy-20cm BeO optics |
120 120 40 40 40 5 5 |
1 1 1 1 1 1 1 |
870000 760000 780000 770000 n/a n/a n/a |
3.0
0.4
1.3
1.3
1.0
10-15min
10-15min
|
7.0 + 0.5 |
? ? ? ? ? n/a n/a |
| Kin | Ein [GeV] | Po (GeV) | Theta | x-region | Q^2-range | Target | I (uA) | prescale | # good evts | time(hrs) | total time | # evts accumulated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 6 | 3.356 | 2.885 (RQ3=2.5308GeV/c, Iset=????A, Iread=????A) | 27.0 | 3N SRC | 2.04-2.18 |
3He-20cm Carbon-5mm Dummy-20cm BeO Optics |
120 120 40 5 5 |
1 1 1 1 1 |
164000 138000 n/a n/a n/a |
65.0
6.0
23.0
10-15min
10-15min
|
94.0 + 0.5 |
? ? ? n/a n/a |
