Winter 2016 optic plans

LHRS DAQ: S2+Cer, Use LHRNEW for DAQ configuration
E_beam= 2.301 GeV
LHRS θ_e=16.5 deg
 
 
 

==== Procedure with Sieve-slit (DIS) ====
P₀= 1.0 [GeV/c] (DIS)
Q²= 0.19 GeV²
W=1.77 GeV

<td>752 (tuned)</td> <td>300</td> <td>1h (or at least 100k events)</td> <td>&nbsp</td> <td>&nbsp</td> <td>&nbsp</td> </tr> <tr> <td>Optics</td> <td>677 (0.9 detuned)</td> <td>300</td> <td>1h (or at least 100k events)</td> <td>&nbsp</td> <td>&nbsp</td> <td>&nbsp</td> </tr> <tr> <td>Optics</td> <td>602 (0.8 detuned)</td> <td>300</td> <td>1h (or at least 100k events)</td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>Optics</td> <td>496 (0.66 detuned)</td> <td>300</td> <td>1h (or at least 100k events)</td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>4 cm Dummy</td> <td>752 (tuned)</td> <td>160</td> <td>45 mn (or at least 50k events)</td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>4 cm Dummy</td> <td>677 (0.9 detuned)</td> <td>160</td> <td>45 mn (or at least 50k events)</td> <td> </td> <td> </td> <td> </td> </tr> <td>4 cm Dummy</td> <td>602 (0.8 detuned)</td> <td>160</td> <td>45 mn (or at least 50k events)</td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>4 cm Dummy</td> <td>496 (0.66 detuned)</td> <td>160</td> <td>45 mn (or at least 50k events)</td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>C single foil</td> <td>752 (tuned)</td> <td>60</td> <td>20 mn (or at least 72k events)</td> <td>&nbsp</td> <td>&nbsp</td> <td>&nbsp</td> </tr> <tr> <td>C single foil</td> <td>677 (0.9 detuned)</td> <td>60</td> <td>20mn (or at least 72k events)</td> <td>&nbsp</td> <td>&nbsp</td> <td>&nbsp</td> </tr> <tr> <td>C single foil</td> <td>602 (0.8 detuned)</td> <td>60</td> <td>20m (or at least 72k events)</td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>C single foil</td> <td>496 (0.66 detuned)</td> <td>60</td> <td>20mn (or at least 72k events)</td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>15 cm LH2</td> <td>752 (tuned)</td> <td>780</td> <td>20 min (or at least 72k events)</td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>15 cm LH2</td> <td>677 ( 0.9 detuned)</td> <td>780</td> <td>20 min (or at least 72k events)</td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>15 cm LH2</td> <td>602 ( 0.8 detuned)</td> <td>780</td> <td>20 min (or at least 72k events)</td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>15 cm LH2</td> <td>496 (0.66 detuned)</td> <td>780</td> <td>20 min (or at least 72k events)</td> <td> </td> <td> </td> <td> </td> </tr> <tr> <td>200 μm tungsten wire</td> <td>752 (tuned)</td> <td>26.5 (central hole only)</td> <td>1h (dictated by Gmp)</td> <td> </td> <td> </td> <td> </td> </tr> </table>  
 
 
==== Delta Scan with Proton Elastic ( no sieve) ====
 
 
The LHRS goes to a new higher momentum setting which means Q2 and Q3 need to be cycled.  
LHRS θ_e=16.5 deg
Rate: 252 kHz at 20 μA YES 200 KHZ !!!!! Run duration: about 1 s before the WC burn out !!  
 
 

Target

LEFT Q1 Current [A]

estimated Rate [Hz] at 20 μA

estimated hours at 20 μA

actual Rate [Hz] at 20 μA

run number

# of events in the run </tr> <tr> <td>Optics

k' (GeV)	LEFT Q1 Current [A]	ΔP (%)	run number	number of trigger
2.02	1517	-4%
2.02	1365 (0.9 detuned)	-4%
2.02	1214 (0.8 detuned)	-4%
2.02	1001 (0.66 detuned)	-4%
2.06	1549	-2%
2.06	1394 (0.9 detuned)	-2%
2.06	1239 (0.8 detuned)	-2%
2.06	1022 (0.66 detuned)	-2%
2.1	1580	0
2.1	1422 (0.9 detuned)	0
2.1	1264 (0.8 detuned)	0
2.1	1043 (0.66 detuned)	0
2.14	1612	+2%
2.14	1451 (0.9 detuned)	+2%
2.14	1401 (0.8 detuned)	+2%
2.14	1064 (0.66 detuned)	+2%
2.18	1643	+4%
2.18	1479 (0.9 detuned)	+4%
2.18	1314 (0.8 detuned)	+4%
2.18	1085 (0.66 detuned)	+4%

==== Carbon elastic ( no sieve) ====
 
 
The LHRS goes to a new momentum setting which means Q2 and Q3 need to be cycled.  

LHRS θ_e=16.5 deg
P₀= 2.281 [GeV/c] (super-elastic)

Rate: 1Hz ?? at 20 μ Single Carbon foil.

2 hours.