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== CREX Run Plan for Commissioning and Auxiliary Measurements ==

See also the [[RunPlanDaily_CREX| Daily Run Plan]] and [[Run plan history CREX| Previous Daily Run Plans]] and  [[CREXAuxiliaryMeasurements| Auxiliary Measurements ]]

[[PREX_I_Run_Plans | PREX I - 2010 Run Plan]]
[[PREX2RunPlan2019 | PREX II - 2019 Run Plan]]
[[PREX2AuxiliaryMeasurements| PREX2 2019 Auxiliary Measurements ]]

The experiment is approved for 45 PAC days including ? production days. There are 87 days on our calendar.<br><br>

Below is a list of tasks in the approximate time order, with person(s) responsible, approximate amount of time required, and comments about the conditions or needs.  The time will, in most cases, be broken up into manageable chunks if needed, but given the extensive preparations and experience from the PREX run, we hope to expedite most of these tasks.  Differences could be when dealing with the target and higher beam currents, for example. After commissioning, we go into a regular production mode; we will provide an updated document webpage for shift worker instructions.

<font color="red"> Total time: ? </font> &nbsp; Based on this list, each day we will come up with an adjustment to the [[RunPlanDaily| Daily Run Plan]].  Some flexibility will be needed to accommodate problems and changes in plans.

Several of the early tasks, including some beam restoration and low current commissioning, can be accomplished starting Nov 25.  During this time period, we expect to do Moller polarimetry measurements/commissioning with 1 pass and 5 pass beam.

== Beam Restoration ==
# <font color="blue">Basic beam setup</font> <span style="background-color:#F1C40F">1 shift</span>: Yves Roblin  
#* establish tune beam and low current CW beam in the hall.
## Establish beam to dump, through Compton chicane
## Design match to hall expected as part of original configuration, if additional beam time is required will be necessary to coordinate with optics/production runplan
## ion chamber calibration (should be ready for this if not already done). We should have targets ready; neeed targets in (MASK ION CHAMBERS); <font color="red"> Dustin will coordinate</font>
# <font color="blue">Source and Parity Quality Beam</font>  <span style="background-color:#F1C40F">0 shift (complete before 11/25)</span>: Caryn Palatchi, Amali Premathilake, Kent Paschke
## Source laser optics configuration and initial setpoints <font color="green">  done </font>
## Wein left/ Wein Right injector optics configuration <font color="green"> not done yet</font>
## Characterize injector optics configuration <font color="green"> done </font>

== Low Current Commissioning ==  
* Basic beamline commissioning  (may be 3 shifts total)
**Establish low-current beam with spectrometer magnets on. Establish centering on collimator. BPM offset calibration. Commission target ladders.
**Preparations:
*** Stripchart on ion chambers, with bpm4e and bpm4a positions
*** stripchart on collimator and beamline temps with bpm 4a and 4e positions 
*** stripchart on compton rates (with beam current) <span style="color:red">no more 2x what is present in [https://logbooks.jlab.org/entry/3687977 HACOMPTONLOG]</span>
#<font color="blue">Verify Beamline setup </font> <span style="background-color:#F1C40F">1 shift</span> Yves Roblin, Bob
#* Tune mode. No target. Raster off. Ion chambers masked.   <span style="color:red">[http://opsweb.acc.jlab.org/CSUEApps/atlis/atlis.php?load=Task&task_id=19326 ATLis 19326]</span>
##beam transport through Compton chicane up to 5uA CW. 
##* Rates in finger scintillators <span style="color:red">no more 2x what is present in [https://logbooks.jlab.org/entry/3687977 HACOMPTONLOG]</span>
##* ComptonUS1 ~ 30 Hz, ComptonDSbg1  ~ 870 Hz, ComptonDCbg2 ~ 1010 Hz
##spot size at target (harps)  (nominal spec is 150 um x 150 um.  Minimum is 80 um x 80 um) 
##* Use 5uA CW, but keep eye on compton rate, ion chambers, temps.)
##Tune beam. Turn on septum and verify still on dump. Clean transport to dump for PREX set points
##1 arm running (Q1 on) test to verify no beam motion. 
##Turn on both Q1 spectrometers.
# <font color="blue">Hall bullseye scan</font> <span style="background-color:#F1C40F">0.5 shift</span> Ye Tian, Bob (should be redone to check nothing changed during down)
#* harp scans at each of 5 points around nominal center, (0,0), (2,2), (2,-2), (-2,-2), (-2,2).
## Set prescale for high rate of clock triggers
## Watch beam on viewer, ion chamber and temperature stripcharts.
## use 2-5uA CW to find each corner position. 4A, 4E harp scan for one of the corner positions and verify EPICS readback of BPMs, check spectrometer BPM calibrations.
### If PREX expert is available, parasitically collect data for low current beam monitoring (cavities). If during day have RC inform J Musson before taking this data.
# <font color="blue"> Collimator checkout </font> <span style="background-color:#F1C40F">0.5 shift</span> Yves, (Ciprian G, Kent P ?), Dustin
#* Verify that we are cleanly going through the collimator and cross check power deposition calculations
## Target ion chamber setpoints can be set high to allow this test.
## setup ion chamber strip chart
## Establish  2-5uA tune mode, with empty target. Use 2x2 raster. 
## move beam in 2mm steps as much as +/- 1 cm in both horizontal and vertical. Watch for rise the ion chamber signal. Record positions where edges of the collimator bore are found. 
## set beam to center on colllimator based on those edges.
# <font color="blue"> Septum beam-steering check </font> <span style="background-color:#F1C40F">0.5 shift</span> Bob, Don, Dustin
#* Verify that energizing the septum does not steer the beam off the dump
#* Septum polarity check here as well? 
# <font color="blue"> Warm target position </font><span style="background-color:#F1C40F">0.25 shift</span> Dustin (Silviu, present or on call?)
#* Verify target alignment.
## insert warm ladder, carbon hole. 
## Set raster for 8mmx8mm 
## establish 2uA CW. Run spot++ to find carbon hole.  log it.
## Adjust raster setting to establish 2x2 raster size. Log it.
## if carbon hole not in 2x2 raster view, need to reconsider. (move beam, or use off center?)
# <font color="blue">Cold target position </font> <span style="background-color:#F1C40F">0.25 shift</span> Bob (Silviu, present or on call?)
#*Verify target alignment. 
#* target and dump ion chamber set points will need to be raised to perform this commissioning
## insert cold ladder, carbon hole. 
## Set raster nominal 8x8 (or what could be used.)
## establish 5uA CW. Run spot++ to find carbon hole.  Log it.
## Set raster to 2x2 set point from before. Use spot++ to verify it. 
## if carbon hole not in 2x2 raster view, need to reconsider. (move beam, or use off center?)
## compare to position of carbon hole on warm and cold ladders.  Do we need to recheck target frames for targets? Do we need to change encoder positions?
## Move to Ca-40 target, location #(?)
## establish 5uA CW, 2x2 raster. Run spot++ to verify raster size, not hitting edges. Log it.
# <font color="blue"> Very low current commissioning </font><span style="background-color:#F1C40F"></span>  '''Very low current not needed because 1 uA is only few kHz in detectors.'''  <!--
 '''LOW CURRENT CAVITIES WILL BE SET UP THE SAME AS FOR PREX-II (so don't need this)'''
#* commission low current cavities relative to stripline calibration. Commission cavity bpm lock.
#* Note: position scan and lock setup are separate pieces, can happen at different times. 
#* Either/ both can happen later (during optics running). Needed before sieve-out Q2 studies.
## Cavity lock   
##* [Yves is required for step]
###setup cavity stripchart. Establish 2uA CW.
### setup cavity slow lock.  Verify that in operation this lock holds the position in the cavity epics readback.
### lower current to 100 nA.  Verify that the lock still holds the cavity epics readback.
## Cavity Position scan. 
###setup cavity stripchart. Establish 1uA CW. 
### Find corrector positions for +/-2mm in X, Y. 
### Reduce current to 50nA. 
### set to each corrector position, verify position measurements with epics readback
####Turn on both parity DAQ and counting DAQs. For the counting DAQ, the trigger is set to T1=1,  and make sure that S0 HV is on.
##### For changing the trigger prescale factor: for the LHRS, please go to adaq@adaq3, type prescaleL, and you will see a gui, and set T1=1 and press the save button and exit it. 
##### For the RHRS, please go to the adaq@adaq2, typle prescaleR, and you will see the same gui, just set T1=1 too and press the save button and exit it.
####Start/and stop the parity DAQ and counting DAQs at same time for the each position point. 
####Look at the strip chart of IPM1H04BX, IPM1H04CX, IPM1H04DX and IPM1H04BY, IPM1H04CY,  (current signal) IPM1H04DY, IPM1H04B, IPM1H04C, IPM1H04D, if the signal is saturate or too small to present. Then we need to change the gain of the cavity BPMs
#####Change the gain, please call Ye Tian (803-553-3570)  -->

== Spectrometer Commissioning ==
[https://prex.jlab.org/DocDB/0003/000378/004/opticsplan_jun19.pdf <font color="magenta">'''Detailed Optics Plan'''</font>]  <font color="red">'''Name and time assignments needs to be worked out by optics crew'''</font>
# <font color="blue"> Tracking checkout </font> <span style="background-color:#F1C40F">1 shift</span>: Bob M, Ryan R, Chandan G
## Sieve In, raster off. Tune P. 45 deg C target. 1 uA. 
## Septum 789 A = 2144*1.05*333/950  (or, use correct momentum here)
## Check rates with scalars. 
## Set prescales for S0 triggers.
## VDC checkout; look at tracks, VDC spectra
## Some short run for GEM: noise, pulse-heights, tracks, etc. After this GEMS out of DAQ to improve efficiency. 
# <font color="blue">Sieve reconstruction verification </font>  <span style="background-color:#F1C40F">0.25 shift</span>:Bob or Dustin, Ryan
## Sieve In, raster off. Tune P. 45 deg C target. 1 uA. 
## Septum 789 A 
## 500k events
# <font color="blue">Tune septum to central ray </font>  <span style="background-color:#F1C40F">1 shift</span>: Bob or Dustin, Ryan
## Sieve In, raster off. Tune P. 45 deg C target. 1 uA. 
## Beam centered on axis 
## Start septum at 789 A 
## 500k events per run
## Adjust Q1 fields by 10% low (one run) and high (one run)
### Identify the invariant position in the phitarg-thetaTarg space and adjust septum to move the central ray to expected location
## Repeat 10% low (one run) and high (one run) to verify central hole in correct location
## Verify for Q2 and Q3 that central hole does not move under field changes (1 run each, 10% low). (optional)
##* Expected: the hole will be invariant under all quad changes. This location is about 2mm toward beam from central hole.
## Last step: CYCLE QUADS to get back to precise Tune P optics
# <font color="blue">Inner Edge Identification</font> <span style="background-color:#F1C40F">0.5 shift</span>: Bob or Dustin, Ryan
## Sieve In, raster off. Tune P. 45 deg C target. 1 uA. 
## Beam centered on axis 
## Start septum at central tune
## 500 k events per run
## Take 9 points over septum current from +10% to -10%  ''(use maximum high current setting, +15% if possible)''
### The expected inner edge of the acceptance should match simulation
### If there is a small-angle obstruction for currents at or above the central tune current, identify the lower septum current where there is no inner obstruction for both arms. Use this as new production septum current. 
## Last step: Cycle Septum
# <font color="blue">Quartz spot width minimization (minimum chase)</font>  <span style="background-color:#F1C40F">1 shift</span>: Dustin, Ryan, Devi, Bob?
## Sieve IN (If this is last step of optics configuration, take an access to pull sieve OUT)
## raster ON (2x2 raster) 
## Start with central tune
## 45 deg C target. 1 uA. 
## Beam centered on axis 
## Optics at central tune
## 500 k events per run
## Move Q1/Q3 in tandem, steps of +/- 1%.  
##* Analyze for Left/Right x and y width.
##* Look at septum hole pattern, check no missing holes (if sieve is in) 
## Check eigenvector quads steps of +/- 1% on Q1? 
##* Analyze for Left/Right x and y width.
<!-- ## Take a run along eigenvector quads +/-10% for Q1 filed +/-10% over 5 points (cycle, then scan top to bottom) -->
## Expected: width should be minimized 
##* Tune that minimizes width at detectors is new central tune. 
# <font color="blue">Quartz detector checkout</font> <span style="background-color:#F1C40F">1 shift</span>: Dustin, Devi, VDC expert
## Sieve OUT
## raster ON (2x2 raster)
## Start with central tune
## thin C target. 0.5uA - 1 uA (want quartz scaler rates below 1MHz but need beam position monitoring)
## Beam centered on axis 
## Optics at (new) central tune
## verify small spot at quartz (thin C, low current, sieve out, raster on?) 
## thin C, low current, raster on, Sieve OUT:  positions [[Media:quartzAlignmentRunPlan.pdf|<font color="magenta">Plan</font>]]
## PMT spectra: Examine pulse height distributions to get RMS/mean and PEyields
## rates:  These will come from scalers.  We can't do a rate "check" without going to integrate mode.  This will be done during Width study
# <font color="blue">Q1 acceptance scan</font>  <span style="background-color:#F1C40F">0.25 shift</span>:Ye T '''WANT GOOD QUARTZ ALIGNMENT FOR THIS (and small spot on quartz)'''
## Sieve In, raster off. Tune P. 45 deg C target. 1 uA. 
## Beam centered on axis 
## Optics at central tune
## 500 k events per run
## Take a run for Q1 filed +/-10% over 5 points (cycle, then scan top to bottom)
##* Expected: later analysis should show out of plane acceptance compares to simulation. 
##* Central ray at lower angle than central sieve hole.
# <font color="blue">Optics calibration data </font> <span style="background-color:#F1C40F">0.5 shift</span> Nilanga, Siyu
## Sieve In, raster off. (check operational restrictions for tungsten and water cell)
## Tune P. 
## beam current no more than 1 uA. 
## Beam centered on axis 
## Optics at central tune
## 500 k events per run
## spectrometer momentum scan 
##* scan from high to low dp/p = +1% to dp/p = −2% in steps of 1%. 
##* '''The septum current must change with the HRS spectrometers'''
### For each dp, take 500 k events with '''45 deg tungsten target'''
###*  for dp = 0: Measure X = nominal center, and X = +/- 1 mm. Remember to go back to X= nominal for other measurements
### For each dp, take 500 k events with '''45 deg water cell target'''
###*  for dp = 0: Measure X = nominal center, and X = +/- 1 mm. Remember to go back to X= nominal for other measurements
# <font color="blue">Water cell pointing </font> <span style="background-color:#F1C40F">1 shift</span> Nilanga, Siyu
#* Sieve OUT
#* Raster off (check operational restrictions)
#* <= 1 uA 
#* 500k events per run. Take 2 runs to double statistics.
# <font color="blue">Y target reconstruction on warm and cold ladders</font>
## Raster off.  
## 45 deg carbon
## 90 deg carbon
# <font color="blue">Q2 measurement</font> <span style="background-color:#F1C40F">0.5 shift</span> Chandan, Siyu, Bob
## Production target
# <font color="blue">Quartz detector rate estimate</font> <span style="background-color:#F1C40F">0.5 shift</span> KK, Dustin, Devi, Tao
## controlled access to change UpStream quartz detector (in each arm) to integrating mode
## draft [[Media:RateStudyPlan_phaseI.pdf|<font color="magenta">plan</font>]]
# <font color="blue"> Position At detectors </font>: Dustin, Ryan

== High current checkout == 
<font color="red">'''REMEMBER: Remove the beamdump difusor before going to high current!'''</font>

# <font color="blue">Ion Chamber calibration - thick Target </font> <span style="background-color:#F1C40F">0.25 shift</span> Dustin, Caryn will coordinate with Nick Gauthier
#* Procedure discussed with Eric Forman: thick target calibration procedure (ramp 2-10uA) for ALL ion chambers (including the dump)
#* Must keep rates in compton finger scintillators; <span style="color:red">no more 2x what is present in [https://logbooks.jlab.org/entry/3687977 
## Establish beam, 5uA beam, 2x2 raster, on Ca-40 target.  
## move beam to x=+1mm (relative to collimator center)
## target and dump ion chamber setpoints can be set high this configuration
## Execute thick target Ion Chamber calibration, From Atlis 19326. This calibration will be used to set ion chamber setpoints.
### Dump and Near-target ICs: set for 45 degree targets by projecting ion chamber setpoints for 20uA  current or 90 degree targets by projecting to 70uA current.
#* parasitic: first check of SAMs at low current (call Devi? or Dustin? before starting)

[[CREX Detailed High current plan|detailed plan]]
# <font color="blue">Basic setup</font> <span style="background-color:#F1C40F">0.5 shift</span> Yves R, Ciprian G: 
#* No target.
#* 150uA beam current, (if Yves available) through Compton (backgrounds on fingers and Compton photon detector). 
# <font color="blue">Beamline instrumentation calibration</font> <span style="background-color:#F1C40F">0.5 shift</span> Caryn P,Amali, Cameron (+learners)
## Run current scan, local around 100uA, using Unser to calibrate beam charge monitor readout in parity DAQ.
## Current ramp for BPM/BCM calibrations (no target required) [[CREX Detailed Calibration plan|detailed plan]]
## Go to GainsOff when at 150 uA on bpms (iocse9,iocse10) and repeat local current scan to set bpm pedestals.
## (if going through chicane at this time (not likely), run the Compton DAQ concurrently, for calibration
# <font color="blue">High current with target</font> <span style="background-color:#F1C40F">0.5 shift</span> Ciprian G, Dustin M: 
## Establish 2x2 raster. Insert Calcium target. 
## Ramp up to 150uA <span style="color:red"> (Expect 1/3 the power in the collimator compared to PREX-II)</span>
## Detector and SAM voltages (Dustin M, Devi)
# <font color="blue">Detector/SAM calibration</font> <span style="background-color:#F1C40F">0.5 shift</span> Caryn P,Amali, Cameron (+learners)
## detector pedestals (Target required) [[CREX Detailed Calibration plan|detailed plan]]
# <font color="blue"> Initial production condition test</font>  <span style="background-color:#F1C40F">0.25 shift</span> Caryn P, Amali, Cameron, Tao (+learners) [[CREX Detailed Production plan|detailed plan]]
## detector and SAM widths
## regression sensitivities
## beam noise and asymmetry check
## collimator water and thermocouple temperatures, 
## radiation monitors and ion chamber stability
# <font color="blue"> Width studies  </font>  <span style="background-color:#F1C40F">0.5 shift</span> KK,
## detector and SAM widths, targets, shutters, etc
## deinstall shutters at conclusion of test

== Beam Monitor calibration == 
(see above, this is redundant information)
# Establish 150 uA in hall <span style="color:red"> (Expect 1/3 the power in the collimator compared to PREX-II)</span>
# Run current scan, local around 100uA, using Unser to calibrate beam charge monitor readout in parity DAQ.  
##Run the Compton DAQ concurrently, for calibration
## Go to FixedGain when at 150 uA on bpms (list of crates???) and repeat local current scan to set bpm pedestals.

== Establish Production Conditions ==
<font color="red">THESE ITEMS NOW IN A LOGICAL ORDER</font>
#<font color="blue">Tuning through Compton chicane</font> <span style="background-color:#F1C40F">0.5 shift</span>Yves, Adam/Amali:  
##No target
##150uA beam current, through Compton (backgrounds on fingers and Compton photon detector). 
# <font color="blue"> FFB commissioning</font> Yves/skilled-OPS
## initial calibration response curves must be measured by OPS
## if FFB is not functioning after compton tune established, beam study is needed to tune this system.  NEEDED FOR ENERGY STABILITY
#<font color="blue">Adiabatic Damping</font> <span style="background-color:#F1C40F">0.5 shift</span>Yves, Amali/Caryn:
##invasive for other halls (best to do before C is up)
##RTP/helmags make big pos diffs
##Yves adjusts accelerator
##Hall Pos Diffs/injector Pos diffs measured
##repeat  
#<font color="blue">Beam modulation w/o target - reasonable tune</font> <span style="background-color:#F1C40F">0.5 shift</span>Victoria O., Ye T,:  
##can be done at low current
##measure coil sensitivities
## perform BMW (no target), measuring coil sensitivities
## (if coil sensitivities are not even close to reasonable proceed to next steps)
## use spreadsheet [[BWM tune|BMW tune]] 
## Jay model effect of 1H01,1H04 quads
## record harp scans spot size 4A/4E for range of quad values (spot size at target >80x80um, <300x300um)
##can tune moller quads in conjunction with harps scans to identify reasonable BMW options
##will have to remeasure raster size on CHole for reasonable BMW options selected for later testing on target
# <font color="blue">Initial Compton commissioning</font> <span style="background-color:#F1C40F">1 shift</span> Dave G, Juan Carlos C,
## minimal set for  measurement conditions
# <font color="blue">Beam modulation w/ target</font> <span style="background-color:#F1C40F">0.5 shift</span>Victoria O., Ye T,:  (<font color="red">Detectors needed for BeamMod commissioning</font>)
## turn on 
### In integrating mode
###check HV of Main Detector
###Lumis on
##set Amplitudes
### start with .100 A set amplitude. Run (at least) 2 supercycles. Check online gui plots for response.
### increase amplitudes by .50 A, to see response (if needed). 
## test orthogonality
### after minimum 2 good supercycles (more is better) ready to examine sensitivities
### if orthogonality is bad, need additional time to discuss with experts about retuning beam.
##turn off
###restore conditions for Moller commissioning
# <font color="blue">Spin Dance</font> <span style="background-color:#F1C40F">2 shifts</span>: Simona Malace
## Moller polarimeter commissioning (establish beam)   (<font color="red">plan needed</font>)
## minimal set for first absolute measurements 
## Spin dance (run plan needed, established optimal spin angle for this Wien state)   (<font color="red">plan needed</font>)
## if machine E needs to change for HallC, require spin dance Wein reoptimization for A
# <font color="blue">Detector checkout</font> <span style="background-color:#F1C40F">1 shift</span> Dustin M: 
## quartz detector position: verify no inelastic event acceptance (<font color="red">plan needed</font>)
## width study   (<font color="red">plan needed</font>)
## raster sync   (<font color="red">plan needed</font>)
## if spin dance reveals C needs machine E to change (~1-2MeV level), repeat
# <font color="blue">Hall PQB</font> <span style="background-color:#F1C40F">1 shift</span> Caryn P,Amali: 
## Establish feedback (if Hall C is not on schedule their feedback for later)
## Check asymmetries in the hall  
## Adiabatic dampening / Matching  (<font color="red">plan needed</font>)  
### Use helicity magnets to tune phase trombone
## First few slugs, vary RTP AposU/V to get slopes, get slow-time-scale minimization done at beginning
# <font color="blue">Production</font>: <span style="background-color:#F1C40F">0.5-3 shift?</span> All
##
# <font color="blue"> Beam Modulation phase advance fine tune</font> (if needed)
## Jay model effect of 1H01,1H04 quads
## record harp scans spot size 4A/4E for range of quad values (spot size at target >80x80um, <300x300um)
## perform BMW (no target), measuring coil sensitivities
## to be done after some time early running and after compton tune established
# <font color="blue">AT measurement</font>: <span style="background-color:#F1C40F">1.5 shift?</span> All (<font color="red">plan needed</font>)
## Do we need to verify zero longitudinal using Moller polarimeter?
## Carbon
## Lead
## Calcium

== <font color="magenta"> '''Start Production''' </font> ==



== Important Activities After First Few Days  ==
# <font color="blue">Linearity Studies</font> -- 
# <font color="blue">Background Studies</font> --
## Scans of Septum Magnet and HRS Dipole
## Thin Lead Target to check for inelastics at high-resolution
## Thin C12 to measure diamond background
# Possible scan of Q1 to optimize acceptance and verify that collimator defines acceptance. (old idea, still relevant?)
# We will start with the Wein in Spin-Right. Once we switch to Spin-Left we need to do another spin-dance.

== Polarimetry Studies ==
# <font color="blue">Compton Commissioning</font> --  &nbsp; Gaskell, et.al.
## Beam Tune, Background reduction -- Bteam, 
## Compton Cavity Checkout  -- 
### Establish laser in cavity
### Move photon detector to visual center, scan beam for collisions
### Establish orbit lock
## Photon Detector Checkout -- CMU group
### Detector power-up, find optimal gain.
### Center detector with fingers.
### 15 minute spectrum and rate study.
### Brief target-out run? (Probably not necessary but may be desirable)
### Polarization commissioning run (up to 2 hour target-in)
### Jaws checkout (?)
# <font color="blue">Moller Commissioning</font> -- Simona Malace, Don Jones, et.al.
## Magnet Alignment -- 1 shift (swing)
## Raster size and pulse-mode -- 1 shift (day)
## Target commissioning - 3 shifts
## Pulse-mode target commissioning - 2 shifts
## DAQ checkout -- 1 shift

== Important Activities During run ==
# <font color="blue">Linearity Studies</font> -- 
# <font color="blue">Background Studies</font> --
# Repeat Q2 and pointing measurements
# Arc Energy Measurement