View source for Beam Polariazation Measurement (How to)

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=Polarization measurement with Hall A Moller polarimeter=
Please, read these useful documents
* [https://hallaweb.jlab.org/equipment/moller/OSP/20160128_moller_osp.pdf Hall A Møller Polarimeter OSP 2016 ] (need to update)
* [http://opsntsrv.acc.jlab.org/ops_docs/online_document_files/MCC_online_files/Hall_A_Moller_polarization_measurement_proc.pdf Hall A Moller Polarization Measurement Procedure]

= Check list before measurements=
== Helicity, BCM signals in Hall A Counting Room==
Patch panel in Counting Room with cables going to the Hall A:
 Connector# Signals (all NIM level) (width)
 4  - BCM signal for Moller (1us)   from VtoF unit (??) Dx10 
 14 - Helicity signal       (33ms)   ----_____---
 15 - QRT signal            (33ms)   ----_____----
 16 - MPS signal            (200 us) ---__----     front with 1us ahead of front of Helicity signal

== Helicity, BCM, 100kHz signals in Hall A Moller electronics rack==
* NIM Module type of PS757 (Fan in/out) in NIM crate of FADC electronics rack
  #input  Signals width
  1 Clock 100kHz  (50ns) 
  4 Helicity      (33ms)
  7 MPS           (200us)

* ADC V792 in FADC VME crate:
  #CH 00  Helicity signal
  #CH 01  QRT signal
  GATE    1.5us after front of MPS signal, width=130ns

* Check APERTURE THRESHOLD with digital multimeter on NIM 16ch discriminator module type of PS708 in NIM crate before old DAQ rack. 
  APERTURE THRESHOLD = -300mV (readout with digital multimeter)

* Check calorimeter OFFSETs with digital multimeter on NIM modules type of PS748 in slot #1 and PS740 slot #2  NIM crate in old DAQ rack.
** Dec 1, 2015 
  PS748 (slot #1) 
 Ch #   OFFSET(mV)
   0    +11.
   1    +12.
   2    +11.
   3    +11.
   4    +12.
   5    +10.
   6    +10.
   7    +12.

   PS740 (slot #2) 
 Ch #   OFFSET(mV)
   0    +18
   1    +22
   2    +14
   3    +15

** Nov 25, 2014 
  PS748 (slot #1) 
 Ch #   OFFSET(mV)
   0    +18.5
   1    +18.6
   2    +20.4
   3    +21.7
   4    +19.5
   5    +25.5
   6    +19.3
   7    +10.3

   PS740 (slot #2) 
 Ch #   OFFSET(mV)
   0    +21.5
   1    +21.6
   2    +22.
   3    +21.5

== Helmholtz coils power supply==

== Target motion==
== Start CODA Moller database (msqld)==
Login to '''adaq1''' (since January 2016 we have moved our old DAQ from '''adaql1''' to '''adaq1''') as '''moller''' and check if msqld daemon is running:
  adaq1> ps -u moller | grep msqld
if output like that:
  22600 ?        00:00:01 msqld
that means msqld is running.<br> 
If not, type to start it:
  adaq1> run_daemon_db msqld &

==CODA LED test run==
==Check Helicity signals and scalers data in CODA data file==
In ~/paw/moller start paw.<br>
To check helicity, QRT signals type in paw:
  paw> exe run run=15623
  Run=15624 is attached to lun=21
  paw> nt/sca //lun21/1 nsca>0 50 1 ! itick itrig(1) itrig(6) itrig(8)
This is output for 30Hz helicity (pair): 
 +-------+-------------+-------------+-------------+-------------+
 | Event |   itick     |   itrig(1)  |   itrig(6)  |   itrig(8)  |
 +-------+-------------+-------------+-------------+-------------+
 |     2 |  11155369   | z'0'        | z'1'        | z'0'        |
 |     5 |  11155373   | z'0'        | z'0'        | z'1'        |
 |     8 |  11155377   | z'0'        | z'0'        | z'1'        |
 |    11 |  11155381   | z'0'        | z'1'        | z'1'        |
 |    14 |  11155385   | z'0'        | z'0'        | z'1'        |
 |    17 |  11155389   | z'0'        | z'1'        | z'1'        |
 |    20 |  11155393   | z'0'        | z'1'        | z'1'        |
 |    23 |  11155397   | z'0'        | z'0'        | z'1'        |
 |    26 |  11155401   | z'0'        | z'0'        | z'0'        |
 |    29 |  11155405   | z'0'        | z'1'        | z'1'        |
 |    32 |  11155409   | z'0'        | z'1'        | z'1'        |
 |    35 |  11155413   | z'0'        | z'0'        | z'1'        |
 |    38 |  11155417   | z'0'        | z'1'        | z'1'        |
 |    41 |  11155421   | z'0'        | z'0'        | z'1'        |
 |    44 |  11155425   | z'0'        | z'0'        | z'1'        |
 |    47 |  11155429   | z'0'        | z'1'        | z'1'        |
 |    50 |  11155433   | z'0'        | z'1'        | z'0'        |
 +-------+-------------+-------------+-------------+-------------+
Where:	
  itick   -  VxWorks time ticks (set in ~/daq/coda2/crlppc/moller_onl.crl to 8.33mS)
  itrig(1) - ADC gate on input #1 of TIR board
  itrig(6) - Helicity signal on input #6 of TIR board
  itrig(8) - QRT signal on input #8 of TIR board
	
To check scalers data type in paw:
  paw> nt/sca //lun21/1 nsca>0 50 1 ! itick isca(1) isca(2) isca(3) isca(4) isca(5)
 +-------+-------------+-------------+-------------+-------------+-------------+-------------+
 | Event |   itick     |   isca(1)   |   isca(2)   |   isca(3)   |   isca(4)   |   isca(5)   |
 +-------+-------------+-------------+-------------+-------------+-------------+-------------+
 |     2 |  11155369   |  9315       |  9315       |  9315       |  0          |  0          |
 |     5 |  11155373   |  9463       |  9463       |  9463       |  0          |  0          |
 |     8 |  11155377   |  9611       |  9611       |  9611       |  0          |  0          |
 |    11 |  11155381   |  9760       |  9760       |  9760       |  0          |  0          |
 |    14 |  11155385   |  9909       |  9909       |  9909       |  0          |  0          |
 |    17 |  11155389   |  10057      |  10057      |  10057      |  0          |  0          |
 |    20 |  11155393   |  10205      |  10205      |  10205      |  0          |  0          |
 |    23 |  11155397   |  10353      |  10353      |  10353      |  0          |  0          |
 |    26 |  11155401   |  10502      |  10502      |  10502      |  0          |  0          |
 |    29 |  11155405   |  10650      |  10650      |  10650      |  0          |  0          |
 |    32 |  11155409   |  10798      |  10798      |  10798      |  0          |  0          |
 |    35 |  11155413   |  10946      |  10946      |  10946      |  0          |  0          |
 |    38 |  11155417   |  11095      |  11095      |  11095      |  0          |  0          |
 |    41 |  11155421   |  11243      |  11243      |  11243      |  0          |  0          |
 |    44 |  11155425   |  11391      |  11391      |  11391      |  0          |  0          |
 |    47 |  11155429   |  11539      |  11539      |  11539      |  0          |  0          |
 |    50 |  11155433   |  11688      |  11688      |  11688      |  0          |  0          |
 +-------+-------------+-------------+-------------+-------------+-------------+-------------+
Where:
 isca(1)  - Left arm (LG and Ap)
 isca(2)  - Right arm (LG and Ap)
 isca(3)  - Coincidence Left and Right arms
 isca(4)  - Accidentals Left and Right arms
 isca(5)  - BCM
 isca(6)  - PLU out 7; in LED setup - number of LED flashes
 isca(7)  - 
 isca(8)  - 
 isca(9)  - 
 isca(10) - (Helicity delayed)*Clock(100kHz)
 isca(11) - !MPS
 isca(12) - PLU out #6 (TimerGenarator * helicity window)	
 isca(13) - 
 isca(14) - 
 isca(15) - Clock TimerGenerator 100kHz

==ADC Pedestals check==
* Set HV ON on moller detector.	[[(Need link to HV ON)]]
* Select configuration "'''moller_puls'''" in old CODA, download it.
* In "'''mpc'''" programm load configuration "'''PULSER_SET'''" to detector electronics and start CODA run.
* Take 3000-5000 events and stop run.	
* In ''~/paw/moller'' start '''paw''':
  > paw
  paw> exec run run=15627
  paw> exec lg_pedes run=15627 pulschk=1
* Copy output results into text file with name "pedes_#RunNumber.dat", where #RunNumber is CODA "pulser" run.
* Edit file "'''lg_spectra.kumac'''", replace:
  ...
  else
    ve/read pedes,pedcut pedes_14754.dat
  endif
  ...
with: 
  elseif [run]<#RunNumber then
    ve/read pedes,pedcut pedes_14754.dat	
  else
  ve/read pedes,pedcut pedes_#RunNumber.dat
    endif
  ...

=Software to start=
* CODA
**  old DAQ ( data in ''/adaq1/data1/raw'' ):   
  ssh moller@adaq1  
  adaq1> start_coda 
* Detector settings and HV control GUI
  ssh moller@adaql2
  adaq2> cd Java/msettings/
  adaq2> mpc		
* FADC DAQ ( data in ''/data1/raw'' ) : 
  ssh moller@hamoller (open 3 terminals)
  hamoller> start_coda_fadc
* FADC settings:  
  hamoller> cd crl/FADC/
  hamoller> gui_fadc_par
* FADC online monitor:
  hamoller> cd fadc_online/mollmon/
  hamoller> mollmon -n moller25 -h hamoller
* EPICS control
  ssh adaq@adaq1
  adaq1> monticello (OS Menu -> EDM -> Hall A -> HallA Moller polarimeter control)
OR
  adaq1> jtabs (Beam Setup -> HallA-> Magnets-> Moller-> Combo)

=Epics screens=
Start JMenu (login to 'adaq1' as 'moller' and type):
  jmenu
input password for user 'adaq'<br>
Then select from JMenu:
* Helicity Control
  JMenu->Beam Setup->Injector->Parity->Helicity Control
* Moller Combo (Magnets Q1-Q4, Dipolem Solenoid (sup.cond.) control, Target motion control, )
  JMenu->Beam Setup->Hall A->Hall A Moller->Combo
* Target Motion Control
  JMenu->Beam Setup->Hall A->Moller Measurements->Moller Target Control
* BPMs position
  JMenu->Operations->Bpms->Hall A Absolute Spikes 
or
  JMenu->Operations->Bpms->Hall A Relative Spikes

=Moller magnet settings and beam tuning=
*  Ask target operator to remove the main Hall A target
*  Raster '''OFF'''
*  Moller magnet settings: (Q1,Q2,Q3,Q4, '''Dipole-OFF''')
    1st Moller quadrupole magnet Q1 - '''MQO1H02''' 
    2nd Moller quadrupole magnet Q2 - '''MQM1H02''' 
    3rd Moller quadrupole magnet Q3 - '''MQO1H03'''
    4th Moller quadrupole magnet Q4 - '''MQO1H03A'''
    Moller dipole magnet            - '''MMA1H01'''

* Get magnet settings for energy (as example) e0=7.37GeV
    paw> lcd mag_optim
    paw> exec sett_magp11 e0=7.37 	
    Eb=7.37GeV
    .       Q1          Q2         Q3          Q4         Dipole
    kG   -4.2742     -1.85808     1.994       4.345     10.8837
    kG*m -30791.3    -16358.5     14315.3     30839.5     1.78793E+06
    A    -197.853    -93.5748     97.3212     208.451     399.068
* Ask MCC operator for beam current 0.5uA
* Beam position tuning with magnet settings (Q1,Q2,Q3,Q4) on '''IPM1H01 BPM ~0.2mm''' (absolute X,Y)
* Turn '''Beam OFF'''
* Turn '''ON''' Moller Dipole
* Ask Beam current 0.5uA
* Beam position tuning with Dipole ON on '''IPM1H01 BPM ~0.2mm'''
* Set Moller target on beam (as on March 15, 2019)
<!--  '''1:''' SM 13.0um (old),  '''2:''' SM 29.4um,  '''3:''' Fe 14.3um,  '''4:''' Fe 9.3um,  '''5:''' SM 6.8um,  '''Left.Lim:''' Al 16.6um
-->
  '''1:''' Empty,  '''2:''' Fe 10.0um,  '''3:''' Fe 4.0um,  '''4:''' Fe 1.0um

=Detector HV tuning=
* HV for Moller detector:
<pre>
  portserver: hatsv5:2003
  slot #5: ch:(0-3) - Calorimeter Left  (1-4); 
	   ch:(4-7) - Calorimeter Right (1-4)
  slot #6: ch:(0-3) - Aperture Left  (1-4); 
	   ch:(4-7) - Aperture Right (1-4)
</pre>
* HV prediction (printout predicted HV calorimeter values for energy e0):
  paw> exec hvlg e0=7.3 set=0
# Tune detector HV
# Start CODA run
# Check signals peak position at ADC	channel.
  paw> exec run run=15625
  paw> exec lg_spectra run=15625			
* Change HV for calorimeter in order to align the Møller peak position at ADC channel 300 for each block.
* Repeat from #1
* FADC DAQ: check signals peak position on online monitor 'mollmon'

=Thresholds tuning=

----
=Polarization measurements=
<ol>
<li>Start '''dbedit''' on '''adaq1''',  select "'''mollerpol_l'''" database and set in "'''beam_pol'''" configuration table in row "'''code'''"
parameter "'''adcevents'''" from 9 to 2: "''' ... adcevents=2'''"
<li>Make at least two CODA runs in order to use both coil polarities.			
</ol>
=Data analysis=
<ol><li> [[Old MolPol DAQ Analysis|old DAQ]]:  ''adaq1:~/paw/moller/''
<pre>
  > paw
  paw> exec run run=15625
  paw> exec lg_spectra run=15625
  paw> exec time run=15625
  paw> lcd mag_optim
  paw> exec anpow_set e0=7.37 (E0 - beam energy in GeV)
  paw> lcd ..
  paw> exec asym15 anpow=0.7735 gate=0.033 run=15625 (gate=0.033 for 30Hz helicity frequency and gate=0.0008 for 1kHz)
</pre>
</li>
The above steps have been tested and are up to data as of November 17th, 2018 - Bill H.
<li> [[FADC MolPol DAQ Analysis|FADC DAQ]]: ''hamoller:~/fadc_analysis/moller_fadc-15Nov2011/''
<pre>
  > bash
  > source root-setup.sh
  > cd onlana
  > analyser
  analyser> replay_test(3023)
  analyser> .x do_analyse(3023)
</pre>
</li>
</ol>

=Results presentation=
* Results of all runs from "'''asym11'''" stored in files: '''runs.tab, res.dat'''
* Do copy these files to ''paw/moller/meas'':
  > cp runs.tab meas/runs.tab.#RunBeg-#RunEnd
  > cp res.dat meas/res.dat.#RunBeg-#RunEnd
* To plot and average results, edit file: ''~/paw/moller/asym_avt.kumac''
*:comment old beam polarization data and add new one, modify output of 'ps' file and titles with date then run it.

=Spin dance=

=Troubleshooting=
* VME crates reboot
  <ol>
  <li>    Software reboot if VME crate is running:
  <ol>
   <li>	old DAQ hallavme5:
       <pre>
	  > telnet hatsv5 2004
  	  > reboot
	  Ctrl and "]"
	  telnet> quit
     </pre>
   </li>

Boot parameters of VME CPU (as on 26 Oct 2016):
 VxWorks (for Motorola MVME2300 - MPC 604r) version 5.3.1.
 Kernel: WIND version 2.5.
 Made on Mar 25 1998, 08:54:04.

    boot device          : dc
    processor number     : 0 
    host name            : adaq1
    file name            : /adaqfs/home/moller/vxworks/vx2306_14
    inet on ethernet (e) : 129.57.192.31:ffffff00
    host inet (h)        : 129.57.192.102
    gateway inet (g)     : 129.57.192.1
    user (u)             : moller
    flags (f)            : 0x20 
    target name (tn)     : hallavme5
    startup script (s)   : /adaqfs/home/moller/vxworks/hallavme5_c4.boot


   <li>	FADC DAQ:
     <pre>
	  > telnet hatsv12 2005
  	  > reboot
	  Ctrl and "]"
	  telnet> quit
     </pre>
Boot parameters of VME CPU (as on 26 Oct 2016):
 VxWorks (for Motorola MVME6100-0163 - MPC 7457) version 5.5.1.
 Kernel: WIND version 2.6.
 Made on Feb 23 2009, 15:41:51.

     boot device          : geisc
     unit number          : 0 
     processor number     : 0 
     host name            : adaq1
     file name            : /adaqfs/home/moller/vxworks/vx6100_v4.1big
     inet on ethernet (e) : 129.57.192.55:ffffff00
     host inet (h)        : 129.57.192.102
     gateway inet (g)     : 129.57.192.1
     user (u)             : moller
     flags (f)            : 0x20 
     target name (tn)     : bbspare1
     startup script (s)   : /adaqfs/home/moller/vxworks/fadcmoller.boot

    </li></ol>
  <li>    Hardware reboot if crates not response:
   <ol>
   <li>	On '''adaq1''' start firefox
	old DAQ hallavme5: <br>
<!--	Go to: '''http://hareboot6''' <br>
          ('''outlet #8''')
-->
	Go to: '''http://hareboot26''' <br>
          ('''outlet #3''')
<!--
	<pre>
          user: hlauser
	  select "Device Manager" tab,
	  select "Control" from left menu,
	  select in small box Outlet #8,
          select Action "Reboot Immediatly " and
	  press "Next" button to activate action.
      </pre>
--->
     <pre>
	  user: hlauser
	  select in "ON" box Outlet #3,	
	  select in small box Outlet #3,	
	  select Action "Reboot Immediatly" and
	  press "Next" button to activate menu.
	  press "Apply" button to activate action.
      </pre>

Wait for few minutes while VME crate is rebooting.
   </li>
   <li>	FADC DAQ crate: <br>
	Go to: '''http://hareboot26''' <br>
         ('''outlet #1''')
     <pre>
	  user: hlauser
	  select in "ON" box Outlet #1,	
	  select in small box Outlet #1,	
	  select Action "Reboot Immediatly" and
	  press "Next" button to activate menu.
	  press "Apply" button to activate action.
      </pre>
Wait for few minutes while VME crate is rebooting.
    </li></ol>
  </li></ol>	

* Moller target softIOC reboot
<ol>
 You can reboot it from <b>jtabs</b>.  Here are the steps:
 <ol>
  <pre>
    ssh hlal00
    jtabs
    select Control System
    select Individual IOC and iocsofthamol
    select Reboot Reason first and then Reboot
</pre>
</ol>
Or you can call MCC to have operator reboot it for you.
</ol>

* HV control
 <ol>
 HV GUI is running on adaq1 computer.<br>
 To check measured voltages of detector go to directory and type
  <pre>
  adaq1> cd ~/daq/coda2/scripts   
  adaq1> get_hv hatsv5:2003
  </pre>
</ol>
<ol>
 To disable or enable HV channels for Moller detector type:
 <pre>
  adaq1> ch_ce.sh 0   (disable all channels)
  adaq1> ch_ce.sh 1   (enable  all channels)
 </pre>
</ol>

* Data analysis