How to run UITF Mott CODA

CODA Startup

• Go to Injector -> Spin -> Mott Screen and open script STARTCODA. See STARTCODA HELP for directions on using CODA

• From an accelerator machine: ssh -X idaq@itfmdaq0

Note: idaq is the injector DAQ account and uses ssh authorized_keys for login - no need to enter password

Execute the following:

% startCoda

Start and Stop a Run

From Run Control panel, select in the following order (Note: if any of the selection is already completed, move to the next step):

1. Configurations => CODA Config => Mott_Sample
2. Configure
3. Download
4. Prestart (or Start. Note that Start combines both Prestart and Go)
5. Go

To stop a run:

8. End

To start a new run, select:

1. Prestart (or Start. Note that Start combines both Prestart and Go)
2. Go
3. End

and if you want to apply a change or you need a new configuration:

9. Reset

and start from number 5.

Configuration File

The DAQ Configuration file is found

• on itfmdaq0:

   /opt/idaq/itfsbcmdaq0/cfg/uitf_mott.cfg

• on itfsbcmdaq0:

   ~/cfg/uitf_mott.cfg

An example file is found below:

/* -*- mode: c; -*- */

Date_Created="";

ti:
{
  blocklevel = 1;
  bufferlevel = 1;

  /*
     Trigger Prescale := 1 / 2^(prescale)
     prescale is fixed to 0 for Mott_Int
  */
  prescale = 0;

 trigger_rules: (
   { /* rule 1 */
     period = 10;
     timestep = 0;
   },
   { /* rule 2 */
     period = 10;
     timestep = 0;
   },
   { /* rule 3 */
     period = 10;
     timestep = 0;
   },
   { /* rule 4 */
     period = 10;
     timestep = 1;
   }
   );

 random_pulser:
  {
    enabled = 0;
    prescale = 0xF;
  }

 fixed_pulser:
  {
    enabled = 0;
    nevents = 0xffff;
    period = 1;
    timestep = 1;
  }
}

helicity_decoder:
{
  address = 0xa80000;
  slot = 21;

  input_delay = 0x100; // 0x100 = 2048 ns (1 = 8 ns)
  trigger_latency_delay = 0x40; // 0x40 = 512 ns (1 = 8ns)

  use_internal_helicity = 0;

 internal_helicity:
  {
    helicity_pattern = 2; // 2 = OCTET
    window_delay = 10;
    settle_time = 0x40; // 0x40 = 512 ns (1 = 8ns)
    stable_time = 0x80; // 0x80 = 1024 ns (1 = 8ns)
    seed = 0xabcdef01;
  }
}

fadc250: (
  {
    type = "integrating";
    address = 0xee0000;
    slot = 18;
    sd_fp_address = 0xeb00;

    init_arg = 0x13;
    mode = 1;

    pl = 0;
    ptw = 0;
    nsb = 1;
    nsa = 498;
    np = 1;

    delay8 = 0;
    delay9 = 0;
    delay11 = 0;

    threshold =
      [ 1, 1, 1, 1,
	1, 1, 1, 1,
	1, 1, 1, 1,
	1, 1, 1, 1 ];

    dac =
      [ 3300, 3300, 3300, 3300,
	3300, 3300, 3300, 3300,
	3300, 3300, 3300, 3300,
	3300, 3300, 3300, 3300 ];

  },
  {
    type = "counting";
    address = 0xed0000;
    slot = 13;
    sd_fp_address = 0xea00;

    init_arg = 0x13;
    mode = 1;

    pl = 85;
    ptw = 50;
    nsb = 5;
    nsa = 28;
    np = 1;

    delay8 = 0;
    delay9 = 2;
    delay11 = 4;

    threshold =
      [
       600,     // CH1 - E LEFT
       600,     // CH2 - E RIGHT
       600,     // CH3 - E UP
       600,     // CH4 - E DOWN
       600,     // CH5 - dE LEFT
       600,     // CH6 - dE RIGHT
       600,     // CH7 - dE UP
       600,     // CH8 - dE DOWN
       1750,      // CH9 - BFM
       1750,      // CH10 - Free (Timing)
       1000,      // CH11 - Mott Trigger
       1750,      // CH12 - Free (Timing_bar)
       10,        // CH13 - Delayed Helicity
       10,        // CH14 - T_Settle
       10,        // CH15 - Pat Sync
       10        // CH16 - Pair Sync
       ];

    dac =
      [
       3300,   // CH1 - E LEFT     Range - 0.5 V
       3300,   // CH2 - E RIGHT          - 0.5 V
       3300,   // CH3 - E UP             - 0.5 V
       3300,   // CH4 - E DOWN           - 0.5 V
       3300,   // CH5 - dE LEFT          - 0.5 V
       3300,   // CH6 - dE RIGHT         - 0.5 V
       3300,   // CH7 - dE UP            - 0.5 V
       3300,   // CH8 - dE DOWN          - 0.5 V
       3300,     // CH9 - BFM            - 1.0 V
       3300,     // CH10 - Free             - 1.0 V
       3300,     // CH11 - Mott Trigger       - 1.0 V
       3300,     // CH12 - Free             - 1.0 V
       3300,     // CH13 - Delayed Helicity   - 1.0 V
       3300,     // CH14 - T_Settle         - 1.0 V
       3300,     // CH15 - Pat Sync         - 1.0 V
       3300     // CH16 - Pair Sync         - 1.0 V
       ];

  }
  );