RunPlan20130803¶

Daily schedule¶

August	Fri 2nd	Sat 3rd	Sunday 4th	Monday 5th
estimated hours	4 pm - 8 pm	8 am - 8pm	8 am - 8pm	8 am - 8pm
MOM	Blackmore	Blackmore	Blackmore	Gamet
Lead shifter				Blackmore
Shifter 2	Boyd	Boyd		Alex D
Shifter 3	Hunt	Hunt	Hunt	Hunt
BLOC	Nebrensky	Nebrensky	Nebrensky	Nebrensky
SOC
Experimenter				Rogers + Martyniak
Aim
Beam?
Extra Personnel

Shifter hours of service¶

See the shift schedule, otherwise hours are:

MOM:	08:00 - 10:00 and 18:00-20:00
Lead shifter	10:00 - 18:00
Shifter1	08:00 - 16:00
Shifter2	12:00 - 20:00

• Note that we will need to inform ISIS crew about new PPS procedures and hall access if we are locking the hall overnight (Action on MacWaters cc MOM)

Data Requested¶

• Beamline optimisation for rate at TOF2 (Blondel)
• PID data for pion/muon discrimination using e.g. KL (Orestano)
  • rate has factor 3 reduction for TOF2 distance, little reduction for DS off
  • Run 3454, 3256; seek to get same rate
• TOF calibration (Rajaram/Rogers)
  • Calibrate TOF2 in new position (copy run 3511?)
  • Check calibration of TOF1 (copy run 3248?)
  • Compare calibration as a function of quad settings (is calibration dependent on path length of electrons)
• Ckov data (Cremaldi)
• Magnet alignment study (Overton)?
• Hall PPS tests (Nebrensky)

Reference runs¶

• Reference runs at the beginning of every day

Number of pulses	Beamloss (V)	Trigger	Proton absorber	Q1	Q2	Q3	D1	DS	D2	Q4	Q5	Q6	Q7	Q8	Q9	Polarity
200	4	TOF1	29	57.8	105.6	64.6	202.8	0	100.43	176.83	237.14	157.24	157.6	238.52	203.7	+

Beamline optimisation for rate at TOF2¶

• I think the job here is to "tweak the currents" trying to improve rate. Not sure how that can go...

PID data¶

Number of pulses	Beamloss (V)	Trigger	Proton absorber	Q1	Q2	Q3	D1	DS	D2	Q4	Q5	Q6	Q7	Q8	Q9	Polarity
10000	4	TOF1	29 mm	48.41	88.48	54.13	169.11	0	84.45	147.28	197.51	130.87	126.61	191.46	163.35	+
6000	4	TOF1	29 mm	63.73	116.53	71.32	225.16	0	110.58	195.63	262.35	174.00	176.82	267.62	228.64	+

• Want 100k-200k triggers for each data set

TOF Calibration¶

10000	4	TOF1	29 mm	38.7	48.3	33.5	115.5	0	59.7	97.2	130.3	86.1	51.2	76.6	64.4	+
10000	4	TOF1	29 mm	57.8	105.6	64.6	202.8	0	100.43	176.83	237.14	157.24	126	190.92	122.1	+
5000	4	TOF1	29 mm	38.7	48.3	33.5	115.5	0	0	0	0	0	0	0	0	+

• If DS is off, take more pulses; aim to get ~ 40k triggers, need ~ 1000 electrons per pixel to do the fits; when quads are off, we don't need to calibrate all the pixels, only a few as a cross-check

Email from Durga (images attached):

> On Jul 25, 2013, at 11:44 AM, Chris Rogers wrote:
> 
> Can you remind me - roughly how many electrons per pixel do you need to get a good TOF calibration? Is it per pixel or per pair of pixels (i.e. is it for TOF0 slab x, slab y -> TOF1 slab x, slab y)?
> 
> Cheers,
> Chris

The requirements are a little different for the timewalk and trigger/t0 calibrations.
But, roughly ~200 particles /per pixel/ in a station should satisfy all the pieces.

If you're interested in a little more detail:
I am attaching XY plots from the Dec'11 calibration data to give some idea of what we had.
- For TOF0 -- the timewalk calibration failed for 4 slabs  -- the 2 slabs at the bottom and the 2 at the top.
- For TOF1 -- which was the trigger station -- the trigger calibration failed for pixels (XY) = (0,0) (0,1) (0,5) (0,6) (6,0) (6,1) (6,5) (6,6)

Ckov Data¶

• Just want Ckov turned on, no other special request

Magnet Alignment Study¶

From email from Ed Overton:
- Preferably using a positive beamline.
- Repeating some previous runs, so see #2808
- G4BL suggests quad scans are still good even with no DS

For all scans use:

Number of pulses

Beamloss (V)

Trigger

Proton absorber

Q1

Q2

Q3

D1

DS

D2

Q4

Q5

Q6

Q7

Q8

Q9

250

4

TOF1

83 mm

68.0

84.9

59.0

203.0

--

94.32

176.8

237.1

157.2

*

*

*

Then adjust Q789 as follows:

Q7	Q8	Q9
0	0	0
80.0	0	0
160.0	0	0
240.0	0	0
320.0	0	0
0	0	0
0	80.0	0
0	160.0	0
0	240.0	0
0	320.0	0
0	0	0
0	0	80.0
0	0	160.0
0	0	240.0
0	0	320.0

Hall PPS Tests (Henry)¶

Henry wants to test the PPS with some obscure use-cases at the end of the shift on Monday, 5th August (related to dropping hall searches, etc.) It should take about 10 minutes at the end of the shift.

• confirm no Muon Test permit during CE state - Confirmed DONE
• test for Muon Test permit during SC Permit non-searched CE state - not possible :-( DONE
• PK00 for Start Search - to be in PK press DONE
• Cancel Search during Searching state - confirmed - DONE
• confirm permit keys not removable while enabled - confirmed - DONE
• Search point photos for user guide - DONE