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DC Aging And Damage.

DC Aging And Damage.

DC Aging And Damage. By Adam Boyarski Stanford Linear Accelerator Center. Aging Studies Overview. BaBar saw high current spikes and steadily increasing chamber currents during commissioning. A familiar problem - known solutions: Add alcohol (Charpak et. al. 1972, Atac 1977), or

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548 views • 45 slides
NKS2 Meeting 2008/10/16

NKS2 Meeting 2008/10/16

NKS2 Meeting 2008/10/16. K. Futatsukawa. NKS2. Simulation Result. Tracking and Vertex Search. Diff: vx (tracking &vertex search) - dx. Vertex Search (first point from simulation). Diff: vx (vertex search) - dx. vx : vertex point x dir. from analyzer dx : decay point x dir. from simulation.

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352 views • 27 slides
16F877A

16F877A

16F877A. Timer 0. The Timer0 module timer/counter has the following features: 8-bit timer/counter Readable and writable 8-bit software programmable prescaler Internal or external clock select Interrupt on overflow from FFh to 00h Edge select for external clock

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392 views • 23 slides
Production #291

Production #291

Production #291. HV. Before After. 3. 7. 12. 2. 1. HV. Production # 503. HV. Before After. HV. Diode scan (no HV) from damaged tube fromCERN HPD #291. Setup and readout. B. HV =10 kV. Keithly 80 V BIAS and ampmeter. 80.00 V. 05.956 nA. LED pulser. Ortec Preamp A~0.5 mv/pe.

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293 views • 20 slides
10 M

10 M

Setup to look at the HV current on side walls of HPD (diode is isolated from this current path). ??. Cable capacitance. HV. 1G. PC. HPD HV gnd. diode. 10 M. B. Voltmeter 20 Mohm OR. V. RBX gnd. Scope on 50 ohm. HV current to Ground through ~5Mohm Previous measured at CERN.

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221 views • 7 slides

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