run plan document e04-007: threshold pion production
TRANSCRIPT
Run Plan Document
E04-007: Threshold Pion Production
Kinematics A (I)• Beam Energy Check
– Left HRS 20.5 Degrees and 1194 MeV/c
• CYCLE Q2 and Q3 to 1400A
– 5uA Beam
– Goto Ta Target
– Take All T3 & T4 Events
– Take 100k Events
– Goto C Target
– Take All T3 & T4 Events
– Take 100k Events
Kinematics A (II)• Elastic Hydrogen Single Arm Cross Section Check
– Left HRS 20.5 Degrees and 1104.9 MeV/c
– 5 uA, No Raster
– Take All T3 & T4
– Take 250k Events
Kinematics (III)• Production pi0 Kinematics
– Left HRS 20.5 degrees, HRS momentum = 960 MeV/c– BigBite = 390A, Angle = 54 degrees– Set Prescales As Follows
• T1 take 10 Hz• T2 take 10 Hz• T3 take 10 Hz• T4 take 10 Hz• T5 set prescale =1• T6 set prescale = 1• T7 set prescale = 65000• T8 set prescale = 100
• Take 1M Event Runs All Night With 5uA, No Raster
Kinematics B (part I)• Beam Energy Check
– Left HRS 16.5 Degrees and 1194 MeV/c
• CYCLE Q2 and Q3 to 1400A
– 5uA Beam
– Goto Ta Target
– Take All T3 & T4 Events
– Take 100k Events
– Goto C Target
– Take All T3 & T4 Events
– Take 450k Events
Kinematics B (part II)• Elastic Hydrogen Single Arm Cross Section Check
– Left HRS @ 16.5 Degrees and 1133.8 MeV/c
– 5 uA, No Raster (lower current if needed)
– Take All T3 & T4
– Take 450k Events
Kinematics B (part III)• Production pi0 Kinematics
– Left HRS 16.5 degrees, HRS momentum = 986 MeV/c– BigBite = 390A, Angle = 54 degrees– Set Prescales As Follows
• T1 take 10 Hz• T2 take 10 Hz• T3 take 10 Hz• T4 take 10 Hz• T5 set prescale =1• T6 set prescale = 1• T7 set prescale = 65000• T8 set prescale = 100
• Take 1M Event Runs All Night With 5uA, No Raster
Kinematics C (part I)• Beam Energy Check
– Left HRS 14.5 Degrees and 1194 MeV/c
• CYCLE Q2 and Q3 to 1400A
– 5uA Beam
– Goto Ta Target
– Take Up To 1kHz T3 & 1kHz T4 Events
– Take 500k Events
– Goto C Target
– Take Up To 1kHz T3 & 1kHz T4 Events
– Take 500k Events
Kinematics C (part II)• Elastic Hydrogen Single Arm Cross Section Check
– Left HRS @ 14.5 Degrees and 1147 MeV/c
– 5 uA, No Raster
– Take All T3 & T4 (Up to 1kHz T3 & 1kHz T4)
– Take 500k Events
• To Check For Boiling
– Repeat Measurement @ 4 uA Again 500k Events
– Repeat Measurement @ 3 uA Again 500k Events
– Repeat Measurement @ 2 uA Again 500k Events
Kinematics C (part III)• Production pi0 Kinematics
– Left HRS 14.5 degrees, HRS momentum = 997 MeV/c– BigBite = 390A, Angle = 54 degrees– Set Prescales As Follows
• T1 take 10 Hz• T2 take 10 Hz• T3 take 10 Hz• T4 take 10 Hz• T5 set prescale =1• T6 set prescale = 1• T7 take 10 Hz• T8 set prescale = 100
• Take 1M Event Runs With 5uA, No Raster
Kinematics D (part I)• Beam Energy Check
– Left HRS 12.5 Degrees and 1194 MeV/c
• CYCLE Q2 and Q3 to 1400A
– 3uA Beam
– Goto Ta Target
– Take Up To 1kHz T3 & 1kHz T4 Events
– Take 500k Events
– Goto C Target
– Take Up To 1kHz T3 & 1kHz T4 Events
– Take 500k Events
Kinematics D (part II)• Elastic Hydrogen Single Arm Cross Section Check
– Left HRS @ 12.5 Degrees and 1158 MeV/c
– 3 uA, No Raster
– Take All T3 & T4 (Up to 1kHz T3 & 1kHz T4)
– Take 500k Events
Kinematics D (part III)• Production pi0 Kinematics
– Left HRS angle = 12.5°, momentum = 1007 MeV/c– BigBite = 390A, Angle = 54 degrees– Set Prescales As Follows
• T1 take 10 Hz• T2 take 10 Hz• T3 take 10 Hz• T4 take 10 Hz• T5 set prescale =1• T6 set prescale = 1• T7 take 10 Hz• T8 set prescale = 100
• Take 1M Event Runs With 3uA, No Raster