Physics Shift Report¶

Start Date: 3rd December
End Date: 5th December
Start Run: 08692
End Run: 08731
Physics shifter: Francois Drielsma

Task¶

The task at end is to continue to take data for the emittance reduction measurement with LiH and also magnet alignment data. The H6 task is a diffuser study.

The cooling channel is in the setting 2016-04_1.2 which, corresponds to the following field in the cooling channel:

The following settings are to be taken:

Task H4 - Emittance Reduction!!¶

Task	Momentum	# Triggers	Beamline Tag	CoolingChannel Tag
H4a	140	1e6 TOF1	3-140+M3-Test2	2016-04-01.2
H4b	140	1e6 TOF1	6-140+M3-Test2	2016-04-01.2
H4c	140	2e6 TOF1	10-140+M3-Test3	2016-04-01.2

Task H5 - Magnet alignment¶

Task	Momentum	# Triggers	Beamline Tag	CoolingChannel Tag
H5a	170	5e5 TOF1	3-170+M3-Test1	2016-04-01.2
H5b	200	5e5 TOF1	3-200+M3_Test1	2016-04-01.2
H5c	240	5e5 TOF1	3-240+M3_Test1	2016-04-01.2

Task H6 - Diffuser Scan¶

Task	Momentum	# Triggers	Beamline Tag	CoolingChannel Tag	Diffuser Setting	Closed Iris	Similar runs	pLoss estimate	Momentum cut
H6a	170	5e5 TOF1	3-170+M3-Test1	2016-04-01.2	1	1	8498	~5 MeV/c	165 +/- 5
H6b	170	5e5 TOF1	3-170+M3-Test1	2016-04-01.2	2	2	8497	~10 MeV/c	160 +/- 5
H6c	170	5e5 TOF1	3-170+M3-Test1	2016-04-01.2	4	3	8495-6	~8 MeV/c	162 +/- 5
H6e	170	5e5 TOF1	3-170+M3-Test1	2016-04-01.2	6	2+3	8499	~18 MeV/c	152 +/- 5
H6f	170	5e5 TOF1	3-170+M3-Test1	2016-04-01.2	7	1+2+3	8502	~23 MeV/c	147 +/- 5
H6g	170	5e5 TOF1	3-170+M3-Test1	2016-04-01.2	8	4	8494	~16 MeV/c	154 +/- 5
H6h	170	5e5 TOF1	3-170+M3-Test1	2016-04-01.2	9	1+4	8500	~21 MeV/c	149 +/- 5
H6i	170	5e5 TOF1	3-170+M3-Test1	2016-04-01.2	12	3+4	8501	~24 MeV/c	146 +/- 5
H6j	170	5e5 TOF1	3-170+M3-Test1	2016-04-01.2	15	1+2+3+4	8503	~40 MeV/c	130 +/- 5

Diffusers properties

Iris ID	Binary	Material	Thickness	pLoss @170 MeV/c
1	0001	Brass	3 mm	~5 MeV/c
2	0010	Brass	6 mm	~10 MeV/c
3	0100	Tungsten	2.8 mm	~8 MeV/c
4	1000	Tungsten	5.6 mm	~16 MeV/c

Analysis¶

• Tag is the beamline tag
• Runs is a list of runs considered to make following calculations (I didn't use all runs for a particular tag)
• TOF1 Triggers is the sum of the CDB TOF1 triggers scalar; note this is trigger requests (does not include dead time/etc)
• TOF2 Triggers is the sum of the CDB TOF2 triggers scalar; note this is trigger requests (does not include coincidence with TOF1/etc)
• lmc1234 sum is the sum of the CDB luminosity monitor scalar
• time taken is the sum of the times listed (time between "start run" and "stop run")
• number in muon peak is the number reporting tof01 in the muon peak, tuned by tag (roughly 28 to 32 ns)
• number at tof2 is the number reporting at least one space point in tof1 and exactly one space point in tof2
• number passing all cuts is the number passing:-
  • exactly one track in TKU
  • tof01 in the muon peak (tuned by tag)
  • TKU total momentum between 135 and 145 MeV/c
  • Exactly one space point in TOF0 and TOF1
• number passing all cuts/p in tku:- I histogram p in TKU, then find the peak bin, then report number in the peak bin divide bin width
• number passing all cuts/tof01:- as per previous entry, but this time using tof01 histogram

Task H4 - Emittance Reduction!!¶

Tag	Runs	lmc1234 sum	TOF1 Triggers	TOF2 Triggers	time taken	number in muon peak	number at tof2	number passing all cuts	number passing all cuts / p in tku [MeV/c^-1]	number passing all cuts / tof01 [ns^-1]
3-140+M3-Test2_8694-8709	[8694, 8695, 8696, 8697, 8698, 8709]	1655320	472612	251955	5 hrs 1 mins	146222	126824	36366	4103.52	64520.0
6-140+M3-Test2_8699	[8699]	877114	309872	127086	2 hrs 4 mins	98156	60251	29804	3163.09	59325.0
10-140+M3-Test2_8692-9693	[8692, 8693]	758882	468115	65826	3 hrs 59 mins	248154	24356	20958	2517.68	44600.0

Task H5 - Magnet alignment¶

Tag	Runs	lmc1234 sum	TOF1 Triggers	TOF2 Triggers	time taken	number in muon peak	number at tof2	number passing all cuts	number passing all cuts / p in tku [MeV/c^-1]	number passing all cuts / tof01 [ns^-1]
3-170+M3-Test1_8705-8706	[8705, 8706]	982898	367961	149731	2 hrs 5 mins	134064	66666	33248	4015.87	69915.0
3-200+M3-Test1_8707	[8707]	907035	505523	98847	1 hrs 58 mins	233051	50343	9689	1283.64	18725.0
3-240+M3-Test1_8708	[8708]	482551	416995	92124	0 hrs 59 mins	113364	48397	7155	561.85	15205.0

Task H6 - Diffuser Scan¶

Tag	Runs	lmc1234 sum	TOF1 Triggers	TOF2 Triggers	time taken	number in muon peak	number at tof2	number passing all cuts	number passing all cuts / p in tku [MeV/c^-1]	number passing all cuts / tof01 [ns^-1]
3-170-diff1+M3-Test1_8710-8723	[8710, 8723]	1061197	401237	166690	2 hrs 31 mins	149578	75558	35928	3641.4	77970.0
3-170-diff2+M3-Test1_8711-8724	[8711, 8712, 8724]	987620	376879	155686	2 hrs 57 mins	140807	72490	33432	4020.0	72940.0
3-170-diff4+M3-Test1_8714-8725	[8714, 8725]	988111	375839	144479	2 hrs 23 mins	140359	66890	26231	3408.25	52450.0
3-170-diff6+M3-Test1_8715-8726	[8715, 8722, 8726]	975688	374212	127963	2 hrs 32 mins	140097	60879	23532	3056.21	45440.0
3-170-diff7+M3-Test1_8717-8727	[8717, 8727]	1008634	382379	116573	2 hrs 17 mins	139546	52070	21799	2874.39	41155.0
3-170-diff8+M3-Test1_8718-8728	[8718, 8728]	1020878	382874	125336	2 hrs 6 mins	138776	57645	25125	3376.88	50455.0
3-170-diff9+M3-Test1_8719-8729	[8719, 8729]	1028270	385097	115509	2 hrs 3 mins	138957	51672	23468	2926.35	46565.0
3-170-diff12+M3-Test1_8720-8730	[8720, 8730]	1028163	384495	93768	2 hrs 4 mins	138986	38145	15891	2158.97	32835.0
3-170-diff15+M3-Test1_8721-8731	[8721, 8731]	985091	378152	62646	2 hrs 26 mins	140441	15617	12865	1645.89	26540.0

Sample output¶

Here are represented the bunches at the entrance of the cooling channel for a sample of the settings

Task H4 - Emittance Reduction!!¶

===== 3 mm-140 =====

===== 6 mm-140 =====

===== 10 mm-140 =====

Task H5 - Magnet alignment¶

===== 3 mm-170 =====

===== 3 mm-200 =====

===== 3 mm-240 =====