Proton Calorimetry/Meetings/2017/07/18: Difference between revisions

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'''Dates Away''':
'''Dates Away''':
; SJ : 28th July–11th August (holiday), 28th August–1st September (AWAKE installations), 5th–14th September (China).
; SJ : 28th July–11th August (holiday), 28th August–1st September (AWAKE installations), 4th–14th September (China).
; ABF : 29th July–5th August, 10th–21st August.
; ABF : 29th July–5th August, 10th–21st August.
; RS : 7th–11th August (Modane), 18th August–2nd September (holiday).
; RS : 7th–11th August (Modane), 18th August–2nd September (holiday).

Revision as of 13:51, 18 July 2017

Minutes for UCL Proton Calorimetry Meeting, 5th July 2017 (D107, Physics & Astronomy, UCL)

Present

Simon Jolly, Anastasia Basharina-Freshville, Ruben Saakyan

RS:

  • PMT bases are on their way from Hamamatsu!
    • Start with testing dynode 4 and 5.
    • Measure peak and average anode current with LEDs.
    • Check low rate performance first, then increase rate to check whether distortion occurs above 1MHz.
    • Gated PMT will require a bit more thought...
  • Scintillator sheets also shipped from Nuvia:
    • Samples of 100x100x10mm, standard and pTP enhanced composition, 0.3mm foil to be cut as needed.
    • Also 3mm pressed material included.
  • WaveCatcher documentation for hardware and software available from Orsay:
    • 2–64 channel versions available.
    • Seems similar to Caen but with access to firmware.

ABF:

  • Applied bias voltage to photodiode preamp: signal increases, so does noise...
  • Will check photodiode with 1–100 ms integration windows.
  • Will also check maximum integration window for Caen DT5740D QDC 16-channel digitiser.

SJ:

  • SMA components mostly here:
    • High quality Huber and Suhner components ordered for proton calorimetry; LOTS of less expensive (but still decent) spares available within group.
    • SMA-BNC and SMA-MCX adapters all arrived.
    • Waiting on 2:1 Mini-Circuits splitter.
    • Various lengths of Huber and Suhner SMA cable borrowed from John Mitchell (UCL Electrical Engineering).
  • Will email Ferruccio Renzoni and Peter Barker regarding coupling of photodiodes to electronics.

Dates Away:

SJ
28th July–11th August (holiday), 28th August–1st September (AWAKE installations), 4th–14th September (China).
ABF
29th July–5th August, 10th–21st August.
RS
7th–11th August (Modane), 18th August–2nd September (holiday).