# Difference between revisions of "Good electron cuts"

From Hall A Wiki

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− | + | ==Good Electron Cuts== | |

+ | |||

+ | The following cuts were applied to get an estimate of the number of good events per run in the left and right HRS: | ||

+ | |||

+ | Plots of these cuts can be seen [http://hallaweb.jlab.org/halog/log/html/1112_archive/111219140307.html here] | ||

+ | |||

+ | 1. Number of tracks = 1 | ||

+ | * L.tr.n==1 | ||

+ | * R.tr.n==1 | ||

+ | |||

+ | |||

+ | 2. Y-Target Tracking Variable | ||

+ | * abs(L.tr.tg_y)<0.05 | ||

+ | * abs(R.tr.tg_y)<0.05 | ||

+ | |||

+ | |||

+ | 3. Number of Clusters in each VDC = 1 | ||

+ | * L.vdc.u1.nclust==1 | ||

+ | * R.vdc.u1.nclust==1 | ||

+ | |||

+ | |||

+ | 4. Cut on Golden Track dp | ||

+ | * abs(L.gold.dp)<0.05 | ||

+ | * abs(R.gold.dp)<0.05 | ||

+ | |||

+ | |||

+ | 5. Cut on Golden Track theta | ||

+ | * abs(L.gold.th)<0.05 | ||

+ | * abs(R.gold.th)<0.05 | ||

+ | |||

+ | |||

+ | 6. Cut on Golden Track phi | ||

+ | * abs(L.gold.ph+0.03287)<0.05 | ||

+ | * abs(R.gold.ph-0.02709)<0.05 | ||

+ | |||

+ | |||

+ | 7. Cut on Lead Glass Detectors | ||

+ | * (L.prl1.asum_p+L.prl2.asum_p)<2100&&(L.prl1.asum_p+L.prl2.asum_p)>1100 | ||

+ | * (R.sh.asum_p+R.ps.asum_p)<4500&&(R.sh.asum_p+R.ps.asum_p)>3000 | ||

+ | |||

+ | |||

+ | 8. Cut on Cherenkov Sum | ||

+ | * L.cer.asum_p>250 | ||

+ | * R.cer.asum_p>250 |

## Latest revision as of 16:50, 5 January 2012

## Good Electron Cuts

The following cuts were applied to get an estimate of the number of good events per run in the left and right HRS:

Plots of these cuts can be seen here

1. Number of tracks = 1

- L.tr.n==1
- R.tr.n==1

2. Y-Target Tracking Variable

- abs(L.tr.tg_y)<0.05
- abs(R.tr.tg_y)<0.05

3. Number of Clusters in each VDC = 1

- L.vdc.u1.nclust==1
- R.vdc.u1.nclust==1

4. Cut on Golden Track dp

- abs(L.gold.dp)<0.05
- abs(R.gold.dp)<0.05

5. Cut on Golden Track theta

- abs(L.gold.th)<0.05
- abs(R.gold.th)<0.05

6. Cut on Golden Track phi

- abs(L.gold.ph+0.03287)<0.05
- abs(R.gold.ph-0.02709)<0.05

7. Cut on Lead Glass Detectors

- (L.prl1.asum_p+L.prl2.asum_p)<2100&&(L.prl1.asum_p+L.prl2.asum_p)>1100
- (R.sh.asum_p+R.ps.asum_p)<4500&&(R.sh.asum_p+R.ps.asum_p)>3000

8. Cut on Cherenkov Sum

- L.cer.asum_p>250
- R.cer.asum_p>250