AIDA
GELINA
BRIKEN
nToF
CRIB
ISOLDE
CIRCE
nTOFCapture
DESPEC
DTAS
EDI_PSA
179Ta
CARME
StellarModelling
DCF
K40
DESPEC
Draft saved at 00:00:00
Fields marked with
*
are required
Entry time:
Sat Mar 29 11:24:04 2025
Author
*
:
Subject
*
:
<p> <table width="98%" align="center" cellspacing="1" style="border:1px solid #486090;"> <tbody> <tr> <td cellpadding="3px" style="background-color:#486090; font-weidht:bold; color:white;">Quote:</td></tr> <tr> <td cellpadding="10px" style="background-color:#FFFFB0;"><h1>Pulser spectra</h1> <ul> <li>Changes to the nn pulser circuit yesterday have improved the peak widths on the p+n side</li> <li>p+n peak widths averact around 100 channels</li> <li>n+n around 1000 at 0xa threshold</li> <li>n+n 1.8.L spectra - attachment 1</li> <li>p+n 1.8.L spectra attachment 2</li> </ul> <h2>p+n peak widths</h2> <table border="1" cellpadding="1" cellspacing="1" style="height:364px; width:246px"> <thead> <tr> <th scope="col">FEE</th> <th scope="col">Width</th> </tr> </thead> <tbody> <tr> <td>9</td> <td>105</td> </tr> <tr> <td>1</td> <td>82</td> </tr> <tr> <td>10</td> <td>71</td> </tr> <tr> <td>11</td> <td>79</td> </tr> <tr> <td>3</td> <td>96</td> </tr> <tr> <td>12</td> <td>72</td> </tr> <tr> <td>13</td> <td>191</td> </tr> <tr> <td>5</td> <td>101</td> </tr> <tr> <td>14</td> <td>129</td> </tr> <tr> <td>15</td> <td>118</td> </tr> <tr> <td>7</td> <td>110</td> </tr> <tr> <td>16</td> <td> <p>100</p> </td> </tr> </tbody> </table> <h2>n+n peak widths</h2> <table border="1" cellpadding="1" cellspacing="1" style="height:132px; width:272px"> <thead> <tr> <th scope="col">FEE</th> <th scope="col">Width</th> </tr> </thead> <tbody> <tr> <td>2</td> <td>1200</td> </tr> <tr> <td>4</td> <td>1179</td> </tr> <tr> <td>6</td> <td>-</td> </tr> <tr> <td>8</td> <td>1813</td> </tr> </tbody> </table> <h1>Daily checks</h1> <ul> <li>Fee temperatures ok - attachment 3</li> <li>Bias and leakage currents ok - attachment 4</li> <li>Stats spectra with current grounding - attachment 5 <ul> <li>Current grounding is just a cable going between each adaptor board and its respective FEE</li> <li>Interfee grounding done by power supply and also pulser circuit</li> </ul> </li> <li>Rates for each of the asics - attachment 6</li> <li>p+n waveforms - attachment 7</li> <li>n+n waveforms - attachment 8 <ul> <li>Lots of noise evident on them</li> </ul> </li> </ul> <h1>Plans for the day</h1> <ul> <li>Connect FEEs up to the copper earth bars installed</li> <li>Powercycle and check noise levels</li> <li>If n+n remains significantly higher investigate the n+n pulser circuit further</li> <li>Investigate the effects of different jumper connetions At present n+n have all LK jumpers on and p+n have lk2-4</li> </ul></td> </tr> </tbody> </table> </p><p> </p>
Encoding
:
HTML
ELCode
plain
Suppress Email notification
Attachment 1:
Drop attachments here...
Draft saved at 00:00:00
ELOG V3.1.4-unknown