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BML COMMISIONING RESULTS

BML COMMISIONING RESULTS. Situation. 69 chamber tested for noise and gas leak 4 chambers 1 or 2 channels with noise rate > 5KHz New independent gas line has been installed for leak test in BB5 Missing components: Some mezzanine boards to be evaluated

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BML COMMISIONING RESULTS

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  1. BML COMMISIONING RESULTS

  2. Situation • 69 chamber tested for noise and gas leak • 4 chambers 1 or 2 channels with noise rate > 5KHz • New independent gas line has been installed for leak test in BB5 • Missing components: • Some mezzanine boards to be evaluated • DCS to motherboard cables: components are ordered: May • HV cables from splitter to FC are under production: May

  3. BML chamber noise test situation 69 chambers tested for noise and gas leak

  4. BML Noise test results Chambers with some problems on mezzanine cards Chamber with noise problems with HV ON (probably due to bad gas in tubes)

  5. HV off HV on Noise rate vs. Voffset Threshold -42 mV Threshold -46 mV Noise Rate [Hz] Noise Rate [Hz] Channels Voffset [mV] Channels Voffset [mV] Number of Entries = 12336

  6. (Noise rate -42mV)/(Noise rate -46mV) vs. Voffset Hv Off Channels Voffset [mV] Hv On Channels Voffset [mV]

  7. Threshold:-42mV HV on Threshold:-42mV HV off Noise rate for 12336 tubes (39 BML chambers) with -42 mV threshold 5KHz Number of entries Noise Rate [Hz]

  8. Threshold:-46mV HV on Threshold:-46mV HV off Noise rate for 12336 tubes (39 BML chambers) with -46 mV threshold 5KHz Number of entries Noise Rate [Hz]

  9. HV off HV on BML Chamber mean noise Threshold -46 mV Threshold -42 mV Noise Rate [Hz] Noise Rate [Hz] BML1A01 BML1A03 BML1A13 BML2A01 BML2A03 BML2A05 BML2A07 BML2A11 BML2A13 BML3A03 BML3A15 BML2C07 BML2C09 BML2C11 BML2C13 BML2C15 BML3C05 BML3C13 BML3C15 BML6C01 BML6C05 BML6C13 BML1A01 BML1A03 BML1A13 BML2A01 BML2A03 BML2A05 BML2A07 BML2A11 BML2A13 BML3A03 BML3A15 BML2C07 BML2C09 BML2C11 BML2C13 BML2C15 BML3C05 BML3C13 BML3C15 BML6C01 BML6C05 BML6C13 Chamber ATLAS ID Chamber ATLAS ID

  10. Hv ON Hv OFF 5KHz Threshold Channels Voffset [mV] Layer 3 Layer 3 Layer 2 Layer 2 Layer 1 Layer 1 Noise of the BML1A01 with threshold of -46mV Multilayer 2 Channels Voffset [mV] Noise Rate [Hz] Multilayer 1 Tube Number

  11. BML1A01 Noise report with threshold of -46mV

  12. Database of On Chamber Electronics and Tests • The database has been created • For all the chamber tested the serial numbers of the on chamber electronic boards have been inserted • The noise test results hasn’t been inserted yet

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