Difference between revisions of "Targets"

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Here's a list of included (either in x>1 or EMC) targets (greenish) and possible new targets (reddish). 
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| bgcolor="#58FA58" |      || Included ||           || bgcolor="#FA5882" |      ||Wanted ||          
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==ERR Planning==
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[https://docs.google.com/spreadsheets/d/1VNpQ8GqdOkiyhPmecokpZJ--6wYiSZlt-lF-irs8rqE/edit?usp=sharing Target Google Sheet]
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 +
==Information stuffs==
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 +
[http://www.jlab.org/Hall-C/talks/08_15_13/covrig.pdf Silviu's Hall C talk]  Includes a proposal for a new target system (that may or may not be built).  Yes, there's more room for solid targets, but because there's no loop 3 (Meekins already said that's a way to add more targets).
 +
 +
==Food for Thought and to help us make decisions==
 +
<b>PRIMARY PHYSICS TOPICS:</b>
 +
 +
0) 2 <= A <= 12
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- Extract EMC effect and SRCs for nuclei where detailed ab initio calculations can be performed
 +
- Examine nuclei with significant cluster structure
 +
- Use nuclei which differ by single proton(neutron) to extract contribution of 'smeared' nucleon to F2A
 +
----------------------------------------------------------
 +
1) 2 <= A <= 96, |n/p-1|<20% [11 nuclei]
 +
- A-dependence over maximal range in A with minimal isoscalar correction
 +
----------------------------------------------------------
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2) A ~ 50, 1 <= n/p <= 1.4 [6 nuclei]
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- Map out variation with n/p with minimal A-dependence
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----------------------------------------------------------
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3) 12 <= A <= 232, n/p grows as ln(A) from 1 to 1.6
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----------------------------------------------------------
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{| class="wikitable"
 
{| class="wikitable"
 
|-
 
|-
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! scope="col"| Z
 
! scope="col"| Z
 
! scope="col"| Max I
 
! scope="col"| Max I
! scope="col"| Why we like it
+
! scope="col"| Physics program [see above]
 +
! scope="col"| Other properties
 
|-
 
|-
|- bgcolor="light red"
+
|- bgcolor="#58FA58"
 
! scope="row"| Hydrogen
 
! scope="row"| Hydrogen
 
| 1
 
| 1
 
| 1
 
| 1
 
| dunno
 
| dunno
| Calibration stuff
+
|
 +
| Calibration
 
|-
 
|-
 +
|- bgcolor="#58FA58"
 
! scope="row" bgcolor="green"| Deuterium
 
! scope="row" bgcolor="green"| Deuterium
 
| 2
 
| 2
 
| 1
 
| 1
 
| dunno
 
| dunno
| You know
+
| 0, 1
 +
|
 
|-
 
|-
 +
|- bgcolor="#58FA58"
 
! scope="row"| Helium-3
 
! scope="row"| Helium-3
 
| 3
 
| 3
 
| 2
 
| 2
 
| dunno
 
| dunno
| no words
+
| 0
 +
|
 
|-
 
|-
 +
|- bgcolor="#58FA58"
 
! scope="row"| Helium-4
 
! scope="row"| Helium-4
 
| 4
 
| 4
 
| 2
 
| 2
 
| dunno
 
| dunno
| no words
+
| 0, 1
 +
|
 
|-
 
|-
 +
|- bgcolor="#58FA58"
 
! scope="row"| Lithium-6
 
! scope="row"| Lithium-6
 
| 6
 
| 6
 
| 3
 
| 3
 
| dunno
 
| dunno
| Light target, isotope 1
+
| 0, 1, 3
 +
| Isospin scan #1 [n/p=1]
 
|-
 
|-
 +
|- bgcolor="#58FA58"
 
! scope="row"| Lithium-7
 
! scope="row"| Lithium-7
 
| 3
 
| 3
 
| 7
 
| 7
 
| dunno
 
| dunno
| Light target, isotope 2
+
| 0, 3
 +
| Isospin scan #1 [n/p~1.3]
 
|-
 
|-
 +
|- bgcolor="#58FA58"
 
! scope="row"| Beryllium
 
! scope="row"| Beryllium
 
| 9
 
| 9
| 4
+
| 0, 4
 
| dunno
 
| dunno
| It's "special"
+
| 3
 +
| Greatest clustering effects
 
|-
 
|-
 +
|- bgcolor="#58FA58"
 
! scope="row"| Boron-10
 
! scope="row"| Boron-10
 
| 10
 
| 10
 
| 5
 
| 5
 
| dunno
 
| dunno
| Light target, isotope 1
+
| 0, 1, 3
 +
| Isospin scan #2 [n/p=1]
 
|-
 
|-
 +
|- bgcolor="#58FA58"
 
! scope="row"| Boron-11
 
! scope="row"| Boron-11
 
| 11
 
| 11
 
| 5
 
| 5
 
| dunno
 
| dunno
| Light target, isotope 2
+
| 0, 3
 +
| Isospin scan #2 [n/p~1.2]
 
|-
 
|-
 +
|- bgcolor="#58FA58"
 
! scope="row"| Carbon-12
 
! scope="row"| Carbon-12
 
| 12
 
| 12
 
| 6
 
| 6
 
| dunno
 
| dunno
| Pretty standard, really
+
| 0, 1, 3
 +
| Calibration, reference
 
|-
 
|-
 +
|- bgcolor="#58FA58"
 
! scope="row"| Aluminum
 
! scope="row"| Aluminum
 
| 27
 
| 27
 
| 13
 
| 13
 
| 40uA
 
| 40uA
| Not sure, medium target?
+
| 1, 3
 +
|
 
|-
 
|-
 +
|- bgcolor="#FA5882"
 +
! scope="row"| Argon-40
 +
| 40
 +
| 18
 +
| dunno
 +
| 1, 2
 +
| Isospin scan #3 [n/p>1]
 +
|-
 +
|- bgcolor="#58FA58"
 
! scope="row"| Calcium-40
 
! scope="row"| Calcium-40
 
| 40
 
| 40
 
| 20
 
| 20
 
| dunno
 
| dunno
| isospin dependence
+
| 1, 2
 +
| Isospin scan #3 [n/p=1]
 
|-
 
|-
 +
|- bgcolor="#58FA58"
 
! scope="row"| Calcium-48
 
! scope="row"| Calcium-48
 
| 48
 
| 48
 
| 20
 
| 20
 
| dunno
 
| dunno
| isospin dependence
+
| 2
 +
| Isospin scan #3 [n/p~1.4]
 
|-
 
|-
 +
|- bgcolor="#FA5882"
 
! scope="row"| Titanium-48
 
! scope="row"| Titanium-48
 
| 48
 
| 48
 
| 22
 
| 22
 
| 80 uA
 
| 80 uA
| isospin dependence (buddy for 48Ca)
+
| 1, 2, 3
 +
| Isospin scan #3 [n/p~1.2]
 
|-
 
|-
 +
|- bgcolor="#FA5882"
 
! scope="row"| Nickel-58
 
! scope="row"| Nickel-58
 
| 58
 
| 58
 
| 28
 
| 28
 
| 80uA
 
| 80uA
| isospin dependence
+
| 1, 2
 +
|
 
|-
 
|-
 +
|- bgcolor="#FA5882"
 
! scope="row"| Nickel-64
 
! scope="row"| Nickel-64
 
| 64
 
| 64
 
| 28
 
| 28
 
| 80uA
 
| 80uA
| isospin dependence
+
| 2, 3
 +
|
 
|-
 
|-
 +
|- bgcolor="#58FA58"
 +
! scope="row"| Copper-Nat
 +
| 63
 +
| 29
 +
| 80uA
 +
| 1, 2, 3
 +
|
 +
|-
 +
|- bgcolor="#FA5882"
 
! scope="row"| Ruthenium-96
 
! scope="row"| Ruthenium-96
 
| 96
 
| 96
 
| 44
 
| 44
 
| 80uA
 
| 80uA
| isospin dependence
+
| 1
 +
| Isospin scan #4 [n/p~1.2]
 
|-
 
|-
 +
|- bgcolor="#FA5882"
 
! scope="row"| Ruthenium-104
 
! scope="row"| Ruthenium-104
 
| 104
 
| 104
 
| 44
 
| 44
 
| 80uA
 
| 80uA
| isospin dependence
+
| 3
 +
| Isospin scan #4 [n/p~1.4]
 +
|-
 +
|- bgcolor="#FA5882"
 +
! scope="row"| Silver-107
 +
| 107
 +
| 47
 +
| dunno
 +
| 3
 +
| Isospin scan #4 [n/p~1.3]
 +
|-
 +
|- bgcolor="#FA5882"
 +
! scope="row"| Tin-120
 +
| 120
 +
| 50
 +
| 35uA
 +
| 3 (and NMC data is weird)
 +
| Isospin scan #4 [n/p~1.4]
 +
|-
 +
|- bgcolor="#58FA58"
 +
! scope="row"| Gold-197
 +
| 197
 +
| 79
 +
| 80uA
 +
| 3
 +
|
 
|-
 
|-
 +
|- bgcolor="#FA5882"
 
! scope="row"| Thorium-232
 
! scope="row"| Thorium-232
 
| 232
 
| 232
 
| 90
 
| 90
 
| 80uA
 
| 80uA
| distorted nucleus - long vs short range correlations
+
| 3
 +
| Extreme n/p, distorted nucleus (long vs short range correlations)
 
|-
 
|-
! scope="row"| Uranium-239
+
|- bgcolor="#FA5882"
| 239
+
! scope="row"| Uranium-238
| 922
+
| 238
 +
| 92
 
| 10uA
 
| 10uA
| best n/p, but not much better than thorium
+
| 3
 +
| Extreme n/p, NOT distorted
 
|}
 
|}
 +
 +
[[File:Np_ratios.png|n/p ratios vs A]]
 +
[[File:Np_ratios_density.png|n/p ratios vs density]]
 +
[[File:densities.png|densities world set (> 700 isotopes)]]
 +
[[File:znp.png| N/P  versus Z world set (> 700 isotopes)]]
 +
[[File:Nuclei.png| Z versus N world set (> 700 isotopes)]]

Latest revision as of 16:02, 18 April 2017

Here's a list of included (either in x>1 or EMC) targets (greenish) and possible new targets (reddish).

     Included                Wanted          
         

ERR Planning

Target Google Sheet

Information stuffs

Silviu's Hall C talk Includes a proposal for a new target system (that may or may not be built). Yes, there's more room for solid targets, but because there's no loop 3 (Meekins already said that's a way to add more targets).

Food for Thought and to help us make decisions

PRIMARY PHYSICS TOPICS:

0) 2 <= A <= 12 - Extract EMC effect and SRCs for nuclei where detailed ab initio calculations can be performed - Examine nuclei with significant cluster structure - Use nuclei which differ by single proton(neutron) to extract contribution of 'smeared' nucleon to F2A


1) 2 <= A <= 96, |n/p-1|<20% [11 nuclei] - A-dependence over maximal range in A with minimal isoscalar correction


2) A ~ 50, 1 <= n/p <= 1.4 [6 nuclei] - Map out variation with n/p with minimal A-dependence


3) 12 <= A <= 232, n/p grows as ln(A) from 1 to 1.6


Target A Z Max I Physics program [see above] Other properties
Hydrogen 1 1 dunno Calibration
Deuterium 2 1 dunno 0, 1
Helium-3 3 2 dunno 0
Helium-4 4 2 dunno 0, 1
Lithium-6 6 3 dunno 0, 1, 3 Isospin scan #1 [n/p=1]
Lithium-7 3 7 dunno 0, 3 Isospin scan #1 [n/p~1.3]
Beryllium 9 0, 4 dunno 3 Greatest clustering effects
Boron-10 10 5 dunno 0, 1, 3 Isospin scan #2 [n/p=1]
Boron-11 11 5 dunno 0, 3 Isospin scan #2 [n/p~1.2]
Carbon-12 12 6 dunno 0, 1, 3 Calibration, reference
Aluminum 27 13 40uA 1, 3
Argon-40 40 18 dunno 1, 2 Isospin scan #3 [n/p>1]
Calcium-40 40 20 dunno 1, 2 Isospin scan #3 [n/p=1]
Calcium-48 48 20 dunno 2 Isospin scan #3 [n/p~1.4]
Titanium-48 48 22 80 uA 1, 2, 3 Isospin scan #3 [n/p~1.2]
Nickel-58 58 28 80uA 1, 2
Nickel-64 64 28 80uA 2, 3
Copper-Nat 63 29 80uA 1, 2, 3
Ruthenium-96 96 44 80uA 1 Isospin scan #4 [n/p~1.2]
Ruthenium-104 104 44 80uA 3 Isospin scan #4 [n/p~1.4]
Silver-107 107 47 dunno 3 Isospin scan #4 [n/p~1.3]
Tin-120 120 50 35uA 3 (and NMC data is weird) Isospin scan #4 [n/p~1.4]
Gold-197 197 79 80uA 3
Thorium-232 232 90 80uA 3 Extreme n/p, distorted nucleus (long vs short range correlations)
Uranium-238 238 92 10uA 3 Extreme n/p, NOT distorted

n/p ratios vs A n/p ratios vs density densities world set (> 700 isotopes) N/P versus Z world set (> 700 isotopes) Z versus N world set (> 700 isotopes)