ELOG CIRCE

AIDA GELINA BRIKEN nToF CRIB ISOLDE CIRCE nTOFCapture DESPEC DTAS EDI_PSA 179Ta CARME StellarModelling DCF K40

CIRCE

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Entry time:

Mon Dec 3 16:47:40 2018

Author*:

Subject*:

On 27/11/2018:

At 8:40 Far S2 bias = -130.0V, leak I = 1.74uA. Diode bias = -70.1V, leak I = 0.00uA.

Pressures (mBar):

<ul>
	<li>TPU1 = 8.3e-7</li>
	<li>TPU2 = 3.4e-7</li>
	<li>TPD1 = 6.5e-7</li>
	<li>TPD2 = 6.5e-7</li>
	<li>CHUP = Sensor Off</li>
	<li>CHDW = No Sensor</li>
</ul>

Preamps still drawing necessary currents.

Stopped overnight run of 3.0MeV 7Be 2+ on CH2 XIX

Checked beam current: FC4 = 2pA.

Moved ladder to position #5 - natC III

Run # 181127085408

<ul>
	<li>Run time: 627s</li>
	<li>Pulser ON, as before</li>
	<li>Target: natC III</li>
	<li>Beam: 3.0MeV 7Be 2+</li>
	<li>DT ~ 23%</li>
	<li>See attached picture 1 for sample S2 front strip spectrum. See attached picture 2 for diode spectrum.</li>
</ul>

Moved ladder to position #2 - 10mm aperture

Run # 181127090808

<ul>
	<li>Run time: 601s</li>
	<li>Pulser ON, as before</li>
	<li>Target: Blank 10mm aperture</li>
	<li>Beam: 3.0MeV 7Be 2+</li>
	<li>DT ~ 10%</li>
	<li>See attached picture 3 for Far S2 innermost strip spectrum.</li>
</ul>

Moved ladder to position #7 - CH2 XIX

Run # 181127092128

<ul>
	<li>Run time: 663s</li>
	<li>Pulser ON, as before</li>
	<li>Target: CH2 XIX</li>
	<li>Beam: 3.0MeV 7Be 2+</li>
	<li>DT ~ 10%</li>
	<li>See attached picture 4 for sample S2 front strip spectrum. See attached picture 5 for diode spectrum.</li>
</ul>

* End of 7Be beam *

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