View source for Dec runplan

<blockquote>E08-027/E08-007 Commissioning Runplan
</blockquote>

Goal : Commission the beamline diagnostics (BCM, BPM, tungsten calorimeter, super-harp slow and fast rasters, Moller polarimeter), the septa magnets, the spectrometer detector stack, the 3<math>^{rd}</math> arm detector and all associated control/DAQ systems for E08-027 and E08-007. The polarized target, local dump and FZ chicane magnets will not be commissioned at this time.

== Task I : Initial Delivery (9 shifts) ==

The initial delivery of beam to Hall A will be directed by Accelerator Ops, with assistance from the Hall A shift crew. This includes delivery of beam to the dump, commissioning of the BPMs, calibration with the Harp and power up of the rasters. 

Full details are provided at: 
*[http://opsweb.acc.jlab.org/CSUEApps/atlis/task/11508 Initial Delivery Testplan] (Y. Roblin).  Some further details are [http://hallaweb.jlab.org/experiment/g2p/collaborators/slifer/dec_com/Yves.docx here].
*[http://opsweb.acc.jlab.org/CSUEApps/atlis/task/11755 Tungsten Calorimeter Testplan] (M. Ahmad)

<U>Start up configuration</U>

# Three pass beam, E0 =1.721 GeV, polarized, no raster.
# Current: Initially pulsed up to 8<math>\mu</math>A pulsed, then up to 5 <math>\mu</math>A CW.
# Spectrometers at 12.5 degrees, <math>P_0=1.720</math> MeV (carbon elastic).
# Carbon Target: OUT.
# Sieve slits : OUT.
# Septa settings: 5.69 degrees.
# Compton chicane: OFF (straigt-thru).
# Polarized Target chicane : OFF and degaussed. (straigt-thru).
# Tungsten Calorimeter : Retracted.

<U>Collab responsibilities:</U>

* Request slow raster radius : 1 cm. Fast raster : 1 x 1 mm<math>^2</math>.
* Checkout Happex BPM crate. ( Resp: A. Camsonne, P. Zhu)
* Request slow energy lock. Monitor Happex asymmetry feedback.
* Confirm final beam energy for delivery.
* Shift will need to run spot++.
* Start Detector checkout parasitically using scattering from <math>^4</math>He flowing in the target chamber.

== Task II : Moller Commissioning (2 shifts) ==

Test plan of Sasha Glamazdin for Moller measurement at three-pass beam.

# Moller settings, HV adjusment - 2 hours
# The first Moller quad scan - 1 hour
# The third Moller quad scan - 1 hour
# Moller target scan - 30 min
# New DAQ dead time test - 2 hours
# Restore the beam parameters - 30 min

<U>Hall A Shift Responsibilities:</U>

# Determine absolute beam helicity signs in Hall A.
# Large asymmetry run. 1 hour. (Resp: Alex).
# Record beam half-wave plate IN/OUT changes during data taking.
# Verify that Wien filter angle and beam half-wave plate status are in EPICS data stream.

== Task III: HRS/Detector Checkout ==

Some of these tasks can be performed parasitically to previous tests. There should be some usuable rate coming from the helium in the PVC pipe.

<U>Hall A Shift Responsibilities:</U>

# Verify that FZ1 and FZ2 chicane magnets are configured for no deflection (&lsquo;straight-thru&rsquo; mode).
# Insert 10 mil carbon foil target. ( Resp:  Ed )
# Spectrometer Magnets ( Resp:  Jack, John )
## Test Quad and Septa cycling. 3 hours.
## Septa field correspondence to HRS. ( Resp: Jixie, Min.)
# Set momentum to carbon elastic setting, <math>P_0=1720</math> MeV.
# Request CW beam at 1 <math>\mu</math>A. No raster.
# Adjust prescalers to obtain deadtime less than 10%. Verify DAQ rate is greater than 4 kHz.
# Continuos online replay. Take 2 M good events per run, but atleast 15 mins for each run. No run longer than 1 hour.
# High rate DAQ tests. 3 hours. ( Resp: Vince, Ryan).
## Minimize DAQ readout time, reduce deadtime.
## Record deadtime as a function of DAQ rate. Change rate via current or prescalers.
# Trigger Checkout. ( Resp: Alex, Vince, Ryan, Melissa).
## Check deadtime via the scalers.
## Verify that all scalers are incrementing.
## Check for double pulsing.
## Check scalers: detector, triggers, charge, etc. ( Resp: Pengia, Vince).
### Online dead time calculation make sense from the scalers. (Use SRC deadtime software.)
# Lumi checkout ( Resp: Kalyan, Pengia).
# 3rd Arm checkout(  Resp: Kalyan, Chao, Jixie). Prior to beam perform Hall probe measurement of magnetic fields at PMT location, and Mu-metal shield optimization.
## Put Al shielding in place before locking-up the Hall.
## Detector checkout with beam (check rates, helicity scalers, bcm, deadtime measurement etc..)
## HV adjustment if any (done with cosmics already)
## Threshold check (unfortunately, we don&rsquo;t have remote threshold control, so need to go to the hall each time we change threshold)
## Check trigger (dE.AND.E) rates and understand optimal conditions to run vis-a-vis prescales vs deadtime.
## Check to see if buffering can implemented ( This in principle can be done before beam come to the hall)
# Helicity ( Resp: Chao, Pengia).
# HRS Detectors ( Resp: Alex, Vince, Melissa, Ryan) : 6 shifts.
## VDC ( Resp: Ryan).
## Gas Cerenkov ( Resp: Melissa)
### Gas shed checkout procedure (Resp: Jack)
### PMT HV gain-matched.
### All ADC and TDC channels have signal?
### Compare NPE to old short tank results.
## Pion rejector / Calorimeter ( Resp: Melissa).
### PMT HV gain-matched.
### All ADC and TDC channels have signal?
## Scintillator (  Resp: Ryan).
### Timing offset of S1 S2M.

== Task IV: Optics Commissioning : 3 shifts ==

( Resp: Jixie Zhang, Min, Chao). This will be a limited commissioning of the spectrometer and septa optics. To be performed only if time available.

By Jixie: The sieve slits are not in position in this commissioning. What we can do here are the following: 
# Beam cross scan (OPs will steer with correctors and quads) 2 shifts
 Try to change beam position with slow raster. At each beam position, take data for delta=0. 
# Verify initial optics database. iterate. 1 shift.
 Make a delta scan when beam position at (x=0,y=0), set delta to -4%, -2%, 0, +2%, +4%

== V: Carbon Inelastic Spectrum and False Asymmetry ==

( Resp: Karl)

# Acceptance scan. Sequentially shift momentum setting by factor 1/3. 1 shift.
# Adjust Prescaler to bring deadtime below 10%. Prescaler should be approximately in range 1-10.
# Take full spectrum of carbon, covering the elastic and accessible inelastic region. See Table below for kinematic settings. Take 2M good events per setting, with a minimum time spent on each point of one hour.

<table border="1">
<tr class="odd">
<td align="center">E<math>_0</math></td>
<td align="center">P<math>_0</math></td>
<td align="center">W</td>
<td align="center">Minimum Time (hr)</td>
</tr>
<tr class="odd">
<td align="center">1.72</td>
<td align="center">1.720</td>
<td align="center">0.98</td>
<td align="center">1</td>
</tr>
<tr class="even">
<td align="center">1.72</td>
<td align="center">1.680</td>
<td align="center">1.02</td>
<td align="center">1</td>
</tr>
<tr class="odd">
<td align="center">1.72</td>
<td align="center">1.556</td>
<td align="center">1.07</td>
<td align="center">1</td>
</tr>
<tr class="even">
<td align="center">1.72</td>
<td align="center">1.431</td>
<td align="center">1.17</td>
<td align="center">1</td>
</tr>
<tr class="odd">
<td align="center">1.72</td>
<td align="center">1.317</td>
<td align="center">1.26</td>
<td align="center">1</td>
</tr>
<tr class="even">
<td align="center">1.72</td>
<td align="center">1.211</td>
<td align="center">1.34</td>
<td align="center">1</td>
</tr>
<tr class="odd">
<td align="center">1.72</td>
<td align="center">1.115</td>
<td align="center">1.40</td>
<td align="center">1</td>
</tr>
<tr class="even">
<td align="center">1.72</td>
<td align="center">1.025</td>
<td align="center">1.46</td>
<td align="center">1</td>
</tr>
<tr class="odd">
<td align="center">1.72</td>
<td align="center">0.943</td>
<td align="center">1.51</td>
<td align="center">1</td>
</tr>
<tr class="even">
<td align="center">1.72</td>
<td align="center">0.868</td>
<td align="center">1.56</td>
<td align="center">1</td>
</tr>
<tr class="odd">
<td align="center">1.72</td>
<td align="center">0.798</td>
<td align="center">1.60</td>
<td align="center">1</td>
</tr>
<tr class="even">
<td align="center">1.72</td>
<td align="center">0.735</td>
<td align="center">1.64</td>
<td align="center">1</td>
</tr>
<tr class="odd">
<td align="center">1.72</td>
<td align="center">0.676</td>
<td align="center">1.67</td>
<td align="center">1</td>
</tr>
<tr class="even">
<td align="center">1.72</td>
<td align="center">0.622</td>
<td align="center">1.70</td>
<td align="center">1</td>
</tr>
<tr class="odd">
<td align="center">1.72</td>
<td align="center">0.572</td>
<td align="center">1.73</td>
<td align="center">1</td>
</tr>
<tr class="even">
<td align="center">1.72</td>
<td align="center">0.526</td>
<td align="center">1.75</td>
<td align="center">1</td>
</tr>
<tr class="odd">
<td align="center">1.72</td>
<td align="center">0.484</td>
<td align="center">1.77</td>
<td align="center">1</td>
</tr>
<tr class="even">
<td align="center">1.72</td>
<td align="center">0.445</td>
<td align="center">1.79</td>
<td align="center">1</td>
</tr>
<tr class="odd">
<td align="center">1.72</td>
<td align="center">0.410</td>
<td align="center">1.81</td>
<td align="center">1</td>
</tr>
</table>