Difference between revisions of "5 pass Run Plan"

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(Optics studies)
(Optics studies)
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=== Optics studies ===
 
=== Optics studies ===
This is the plan for pt-SIDIS. Mark Jones may add some more settings
+
* Series of optics calibrations runs at various central momentum of the HMS and SHMS
for CSV-SIDIS.
+
* Cycle magnets if needed.
Cycle magnets if needed.
+
* Run with sieve IN, raster 2x2,optics #1 target and highest current reasonably possible.
Take electron triggers
+
* Want to take electron singles triggers.
PS1:-1 PS2:1 PS3:1 PS4:0 PS5:0 PS6:0
+
* Constant HMS/SHMS Conditions:
HMS Angle: 13.5
+
{|class="wikitable" style="margin-left: 60px; margin-right: auto; border: none;"
HMS Momentum : -5.27
+
|-
HMS Sieve IN
+
! HMS/SHMS collimator: || SIEVE, CENTERED SIEVE
SHMS Angle: 13.5
+
|-
SHMS Momentum : -5.16
+
! HMS/SHMS trigger prescales: || PS1:-1 PS2:1 PS3:1 PS4:0 PS5:0 PS6:0
SHMS Centered Sieve IN
+
|-
Target: Optics 1 0,+/-10cm
+
! HMS angle/momentum  || 13.5 deg, -6.269 GeV/c (First momentum setting)
Current: max easily reached
+
|-
Raster 2x2
+
! SHMS angle/momentum  || 13.5 deg, -6.269 GeV/c (First momentum setting)
Record at least 100K electrons.
+
|-
 +
! Raster size || 2x2mm
 +
|-
 +
! Target ||Optics #1 (3 foils at 0cm,+/-10cm)
 +
|-
 +
! Current || Max current that can be achieved
 +
|}
 +
* Momentum settings:
 +
{|class="wikitable" style="margin-left: 60px; margin-right: auto; border: none;"
 +
|-
 +
! Run 1 HMS/SHMS momentum: || -6.269 GeV/c  || Record 100K electrons in each arm.
 +
|-
 +
! Run 2 HMS/SHMS momentum: || -5.929 GeV/c  || Record 100K electrons in each arm.
 +
|-
 +
! Run 3 HMS/SHMS momentum: || -5.714 GeV/c  || Record 100K electrons in each arm.
 +
|-
 +
! Run 4 HMS/SHMS momentum: || -5.27 GeV/c  || Record 100K electrons in each arm.
 +
|}
  
 
=== Luminosity Scan ===
 
=== Luminosity Scan ===

Revision as of 09:09, 20 October 2018

5-pass run plan

Goal

The goal of the E12-09-017 experiment is to measure the pt-dependence of SIDIS from proton, deuteron, and aluminum targets, for final state pi+, pi-, K+, and K-. The experiments aims to measure absolute cross sections with particular attention to achieving small errors on the ratios of cross sections for different final states and targets. The beam single-spin asymmetry will also be measured at the settings with sufficient phi coverage. The specific goals of this 5-pass run plan are: a) take the missing 6.5 degree setting for kinematic groups 1-8 that were taken in Spring 20187; b) do a higher (x,Q2) setting with kinematic groups 13-16.

Experimental setup

  • Main trigger is 3/4 hodoscopes in HMS in coincidence with 3/4 Hodoscopes in SHMS.
  • HMS is setup for detecting electrons (inclusive DIS measurement).
  • SHMS is setup for detecting charged pions and kaons (semi-inclusive DIS measurement).

Settings to monitor during shift

  • Beam energy: 10.6 GeV. Raster 2x2
  • Beam current:
    • The nominal beam current is 40 muA. Please adjust the actual beam current to give the single SHMS rates below 500 kHz each time you change targets. You can see this number under "Ptrig1" on the upper left side of the scaler GUI. You can go as high as 60 muA for LD2 and LH2 if the rates are low enough. The dummy target is limited to 40 muA. Approximate beam currents (good starting point) are in the tables below.
  • Trigger:
    • Main trigger is EL_REAL in HMS in coincidence with 3/4 Hodo in SHMS (same as for Kaon-LT experiment).
    • We will also trigger on HMS singles with a pre-scale factor. Adjust prescale to give about 50 Hz. Also adjust prescale to give about 50 Hz SHMS triggers. We will also have some EDT triggers (10 Hz)
  • Prescale: PS6 0 all the time.

Optics studies

  • Series of optics calibrations runs at various central momentum of the HMS and SHMS
  • Cycle magnets if needed.
  • Run with sieve IN, raster 2x2,optics #1 target and highest current reasonably possible.
  • Want to take electron singles triggers.
  • Constant HMS/SHMS Conditions:
HMS/SHMS collimator: SIEVE, CENTERED SIEVE
HMS/SHMS trigger prescales: PS1:-1 PS2:1 PS3:1 PS4:0 PS5:0 PS6:0
HMS angle/momentum 13.5 deg, -6.269 GeV/c (First momentum setting)
SHMS angle/momentum 13.5 deg, -6.269 GeV/c (First momentum setting)
Raster size 2x2mm
Target Optics #1 (3 foils at 0cm,+/-10cm)
Current Max current that can be achieved
  • Momentum settings:
Run 1 HMS/SHMS momentum: -6.269 GeV/c Record 100K electrons in each arm.
Run 2 HMS/SHMS momentum: -5.929 GeV/c Record 100K electrons in each arm.
Run 3 HMS/SHMS momentum: -5.714 GeV/c Record 100K electrons in each arm.
Run 4 HMS/SHMS momentum: -5.27 GeV/c Record 100K electrons in each arm.

Luminosity Scan

Set DAQ to take coincidences (PS5=0) only

HMS settings: p=--5.27 GeV, theta = 16.3 HMS polarity: negative SHMS settings: p=- 3.44 GeV, theta = 16.0 SHMS polarity: positive

Put in LD2 target Run for 30 minutes at 45 muA Run for 40 minutes at 30 muA Run for 60 minutes at 15 muA Run for 30 minutes at 60 muA Run for 30 minutes at 70 muA (if available)

Change polarity of SHMS to -3.44 GeV (negative) Run for 30 minutes at 45 muA Run for 40 minutes at 30 muA Run for 60 minutes at 15 muA Run for 30 minutes at 60 muA Run for 30 minutes at 70 muA (if available)

If have time still, repeat this program with LH2 (start with SHMS negative this time)

If still have time, change to dummy target and Run for 30 minutes at 40 muA SHMS positive polarity Run for 60 minutes at 15 muA Run for 30 minutes at 40 muA SHMS negative polarity Run for 60 minutes at 15 muA

Kinematic Settings

 #  means setting number
 Ptrig6 is the approximate anticipated coincidence rate divided by 3 in Hz
 approximate current  current is the current for which rates are calculated (on LH2). It is fine to run at higher currents (preferably around 60 uA), except of course on the dummy target (40 uA).

Kinematic Group 13

KInematics: x=0.45, Q2=4.50 GeV2, W=2.53 GeV

HMS settings: p=-5.27 GeV, theta = 16.3

HMS polarity: negative

SHMS polarity: positive

                        PTrig6   approximate       Goals and actual mC
   SHMS  SHMS             LH2   beam current     LH2        LD2         Dummy
 #     P Thet    z    pt Hz/3  LH2   LD2  Dum goal got  goal  got   goal  got
 1  5.16 14.0 0.90 -0.09   11. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.
 2  5.16 16.0 0.90  0.09    6. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.
 3  3.44 14.0 0.60 -0.06  143. 60.0 54.8 40.0 140.   0.  134.   0.    70.   0.
 4  3.44 16.0 0.60  0.06   72. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.
 6  2.58  8.0 0.45 -0.31   25.  5.7  2.9 12.7  43.   0.   31.   0.    39.   0.
 7  2.58 10.0 0.45 -0.22   55.  9.8  4.9 21.7  56.   0.   40.   0.    52.   0.
 8  2.58 12.0 0.45 -0.13   98. 17.1  8.6 38.1  75.   0.   53.   0.    68.   0.
 9  2.58 14.0 0.45 -0.04  178. 30.9 15.5 40.0 100.   0.   71.   0.   100.   0.
10  2.58 16.0 0.45  0.05  328. 57.2 28.6 40.0 140.   0.   97.   0.   140.   0.
11  2.58 18.0 0.45  0.14  141. 60.0 54.2 40.0 140.   0.  133.   0.   140.   0.
12  2.58 20.0 0.45  0.23   78. 60.0 60.0 40.0 140.   0.  140.   0.   140.   0.
13  2.58 22.0 0.45  0.32   44. 60.0 60.0 40.0 140.   0.  140.   0.   140.   0.
14  2.58 24.0 0.45  0.41   24. 60.0 60.0 40.0 140.   0.  140.   0.   140.   0.
15  2.58 26.0 0.45  0.49   12. 60.0 60.0 40.0 140.   0.  140.   0.   140.   0.
16  2.58 28.0 0.45  0.58    7. 60.0 60.0 40.0 140.   0.  140.   0.   140.   0.
17  2.58 30.0 0.45  0.67    4. 60.0 60.0 40.0 140.   0.  140.   0.   140.   0.

Kinematic Group 14

KInematics: x=0.45, Q2=4.50 GeV2, W=2.53 GeV

HMS settings: p=-5.27 GeV, theta = 16.3

SHMS polarity: negative

                        PTrig6   approximate       Goals and actual mC
   SHMS  SHMS             LH2   beam current     LH2        LD===Kinematic Settings ===
 #  means setting number
 Ptrig6 is the approximate anticipated coincidence rate divided by 3 in Hz
 approximate current  current is the current for which rates are calculated (on LH2). It is fine to run at higher currents (preferably around 60 uA), except of course on the dummy target (40 uA).

2 Dummy

 #   P   Thet    z    pt Hz/3  LH2   LD2  Dum goal got  goal  got   goal  got
 1 -5.16 14.0 0.90 -0.09   11. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.
 2 -5.16 16.0 0.90  0.09    6. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.
 3 -3.44 14.0 0.60 -0.06  143. 60.0 51.7 40.0 140.   0.  130.   0.    70.   0.
 4 -3.44 16.0 0.60  0.06   72. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.
 6 -2.58  8.0 0.45 -0.31   25.  5.1  2.8 12.5  41.   0.   30.   0.    39.   0.
 7 -2.58 10.0 0.45 -0.22   55.  9.6  4.8 21.3  56.   0.   40.   0.    51.   0.
 8 -2.58 12.0 0.45 -0.13   98. 16.9  8.4 37.5  74.   0.   53.   0.    68.   0.
 9 -2.58 14.0 0.45 -0.04  178. 30.5 15.2 40.0 100.   0.   71.   0.   100.   0.
10 -2.58 16.0 0.45  0.05  328. 56.3 28.1 40.0 136.   0.   96.   0.   140.   0.
11 -2.58 18.0 0.45  0.14  141. 60.0 53.2 40.0 140.   0.  132.   0.   140.   0.
12 -2.58 20.0 0.45  0.23   78. 60.0 60.0 40.0 140.   0.  140.   0.   140.   0.
13 -2.58 22.0 0.45  0.32   44. 60.0 60.0 40.0 140.   0.  140.   0.    140.   0.
14 -2.58 24.0 0.45  0.41   24. 60.0 60.0 40.0 140.   0.  140.   0.    140.   0.
15 -2.58 26.0 0.45  0.49   12. 60.0 60.0 40.0 140.   0.  140.   0.    140.   0.
16 -2.58 28.0 0.45  0.58    7. 60.0 60.0 40.0 140.   0.  140.   0.   140.   0.
17 -2.58 30.0 0.45  0.67    4. 60.0 60.0 40.0 140.   0.  140.   0.   140.   0.

Kinematic Group 15

KInematics: x=0.45, Q2=4.50 GeV2, W=2.53 GeV

HMS settings: p=-5.27 GeV, theta = 16.3

SHMS polarity: positive

                        PTrig6   approximate       Goals and actual mC
    SHMS SHMS            SHMS   beam current     LH2        LD2         Dummy
 #     P Thet    z    pt Hz/3  LH2   LD2  Dum goal got  goal  got   goal  got
 2  2.01  8.0 0.35 -0.24   13.  4.2  2.1  9.3  37.   0.   26.   0.    34.   0.
 3  2.01 10.0 0.35 -0.17   22.  6.2  3.1 13.9  45.   0.   32.   0.    41.   0.
 4  2.01 12.0 0.35 -0.10   51.  9.5  4.8 21.2  56.   0.   39.   0.    51.   0.
 5  2.01 14.0 0.35 -0.03   86. 14.9  7.5 33.2  70.   0.   49.   0.    64.   0.
 6  2.01 16.0 0.35  0.04  137. 23.8 11.9 40.0  88.   0.   62.   0.    70.   0.
 7  2.01 18.0 0.35  0.11  201. 38.6 19.3 40.0 112.   0.   79.   0.    70.   0.
 8  2.01 20.0 0.35  0.18  223. 60.0 31.8 40.0 140.   0.  102.   0.    70.   0.
 9  2.01 22.0 0.35  0.25  137. 60.0 53.3 40.0 140.   0.  132.   0.    70.   0.
10  2.01 24.0 0.35  0.32   82. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.
11  2.01 26.0 0.35  0.38   48. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.
12  2.01 28.0 0.35  0.45   29. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.
13  2.01 30.0 0.35  0.52   17. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.

Kinematic Group 16

KInematics: x=0.45, Q2=4.50 GeV2, W=2.53 GeV

HMS settings: p=-5.27 GeV, theta = 16.3

SHMS polarity: negative

                        PTrig6   approximate       Goals and actual mC
   SHMS  SHMS            SHMS   beam current     LH2        LD2         Dummy
 #     P Thet    z    pt Hz/3  LH2   LD2  Dum goal got  goal  got   goal  got
 2 -2.01  8.0 0.35 -0.24   13.  3.4  2.1  9.2  33.   0.   26.   0.    34.   0.
 3 -2.01 10.0 0.35 -0.17   22.  5.3  3.1 13.8  42.   0.   32.   0.    41.   0.
 4 -2.01 12.0 0.35 -0.10   51.  9.3  4.7 21.1  55.   0.   39.   0.    51.   0.
 5 -2.01 14.0 0.35 -0.03   86. 14.8  7.4 33.0  70.   0.   49.   0.    64.   0.
 6 -2.01 16.0 0.35  0.04  137. 23.6 11.8 40.0  88.   0.   62.   0.    70.   0.
 7 -2.01 18.0 0.35  0.11  201. 37.1 19.2 40.0 110.   0.   79.   0.    70.   0.
 8 -2.01 20.0 0.35  0.18  223. 60.0 31.6 40.0 140.   0.  102.   0.    70.   0.
 9 -2.01 22.0 0.35  0.25  137. 60.0 52.9 40.0 140.   0.  132.   0.    70.   0.
10 -2.01 24.0 0.35  0.32   82. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.
11 -2.01 26.0 0.35  0.38   48. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.
12 -2.01 28.0 0.35  0.45   29. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.
13 -2.01 30.0 0.35  0.52   17. 60.0 60.0 40.0 140.   0.  140.   0.    70.   0.

Kinematic Group 17

KInematics: x=0.31, Q2=3.10 GeV2, W=2.79 GeV. Pick up 6 deg and repeat 12 deg.

HMS settings: p=-5.27 GeV, theta = 13.5

SHMS polarity: positive at first, then negative

                        PTrig6   approximate       Goals and actual mC
   SHMS  SHMS             LH2   beam current     LH2        LD2         Dummy       Done? 
 #     P Thet    z    pt Hz/3  LH2   LD2  Dum  goal got   goal  got    goal  got
 1  2.53 14.0 0.45  0.06  569. 28.7 14.3 40.0  97.   0.   68.   0.    70.   0. 
 2  2.53 12.0 0.45 -0.03  318. 16.1  8.1 35.8  73.   0.   51.   0.    66.   0.
 3  2.53  6.6 0.45 -0.27   48.  4.0  2.0  8.7  40.   0.   25.   0.    33.   0.
 4 -2.53  6.6 0.45 -0.27   48.  3.4  2.0  8.7  40.   0.   25.   0.    33.   0.
 5 -2.53 12.0 0.45 -0.03  318. 16.1  8.1 35.8  73.   0.   51.   0.    66.   0.
 6 -2.53 14.0 0.45  0.06  569. 28.7 14.3 40.0  97.   0.   68.   0.    70.   0.

Kinematic Group 18

KInematics: x=0.30, Q2=4.10 GeV2, W=3.23 GeV. Pick up 6 deg. and repeat 10 deg.

HMS settings: p=-3.32 GeV, theta = 19.7

SHMS polarity: positive at first, then negative

                        PTrig6   approximate       Goals and actual mC
   SHMS  SHMS             LH2   beam current     LH2        LD2         Dummy       Done? 
 #     P Thet    z    pt Hz/3  LH2   LD2  Dum  goal got   goal  got    goal  got
 1 -3.40 12.0 0.45  0.21  124. 44.0 22.0 40.0 120.   0.   85.   0.    70.   0. 
 2 -3.40 10.0 0.45  0.09   59. 20.6 10.3 40.0  82.   0.   58.   0.    70.   0. 
 3 -3.40  8.0 0.45 -0.03   28. 10.4  5.2 23.0  58.   0.   41.   0.    53.   0.
 4 -3.40  6.6 0.45 -0.15   14.  6.0  3.3 11.6  45.   0.   31.   0.    38.   0.
 5  3.40  6.6 0.45 -0.15   14.  6.0  3.3 11.6  45.   0.   31.   0.    38.   0.
 6  3.40  8.0 0.45 -0.03   28. 10.4  5.2 23.0  58.   0.   41.   0.    53.   0.
 7  3.40 10.0 0.45  0.09   59. 20.6 10.3 40.0  82.   0.   58.   0.    70.   0. 
 8  3.40 12.0 0.45  0.21  124. 44.0 22.0 40.0 120.   0.   85.   0.    70.   0.