When referring to angles, spell out “degrees” (as for any other unit):

The tower at Pisa has a tilt of more than 5 degrees

For temperature, use °C

Ethanol boils at 79 °C

For latitude and longitude use ° (closed up to the numeral)

Switzerland lies at latitude 47° north

(note the lower case for north – or south, east or west)

To make a degree (°) symbol on a Mac or a PC, use the key combination Alt-Shift-8 or Alt-0176.

Detector with Lepton, Photon and Hadron Identification, one of the four main detectors on the Large Electron–Positron Collider (LEP)

Acronym doesn’t need spelling out for the CERN Courier

Lower case d. Likewise for group, section, etc.

Use capital letters on the name of a department, but not on the word "department". 

CERN has many departments. While Physics is the largest, the Technology department is also substantial. 

of a text or instrument

Deutsches Elektronen-Synchrotron (German electron synchrotron facility).

Acronym doesn’t need spelling out for the CERN Courier

piece of equipment

One of the few titles that should be capitalised. Avoid abbreviating to DG.

The hyphen is important. Here's an example from a photo caption that shows why: 

Stephen Hawking (left) with CERN Director General Rolf Heuer. 

The sentence above could be (incorrectly) interpreted to mean that Rolf Heuer is a (military) General, and he is also Director of CERN. 

The hyphen renders the compound adjective unambiguous, Heuer is a Director-General.

The plural of Director-General is Directors-General.

See non-discriminatory language

A device used to measure an absorbed dose of ionising radiation.

Do not confuse with Geiger counter.

use hyphen

On Drupal websites at CERN, whenever you add a file field to a page, call it "Downloads". Keep this consistent across CERN websites.

Departmental Planning Officer

Drift-tube chambers

Spell out in first use then use acronym for the CERN Courier

Another great physics word.

A duoplasmatron is a type of ion source. It operates as follows: a cathode filament emits electrons into a vacuum chamber. A gas, such as argon, is introduced in very small quantities into the chamber, where it becomes charged or ionised through interactions with the free electrons from the cathode, forming a plasma. The plasma is then accelerated through a series of at least two highly charged grids, and becomes an ion beam, moving at fairly high speed from the aperture of the device.

use hyphen

use hyphen